Posts with «arduino» label

Insert Coin: Node helps your smartphone monitor pretty much everything

In Insert Coin, we look at an exciting new tech project that requires funding before it can hit production. If you'd like to pitch a project, please send us a tip with "Insert Coin" as the subject line.
Fallen out of love with sensor? Don't worry, Variable Technologies is here to help. The company's working to bring the world Node, a project aimed at helping smartphone users "explore the fun and power of sensors." The "Swiss Army knife-sized" modular device communicates with the iPhone 4S and Android devices via Bluetooth. It has a built-in accelerometer, magnetometer and gyroscope and can detect physical motion and space, temperature and elevation, to name but a few. It also has a game control module and eight LEDs that can double as a camera flash, with carbon monoxide and radiation detection on the way. The Node will be compatible with Arduino devices and will have an open API, firmware and source code. There's a month left to help Variable hit its lofty $50,000 goal. Click the source link for more info.

Continue reading Insert Coin: Node helps your smartphone monitor pretty much everything

Insert Coin: Node helps your smartphone monitor pretty much everything originally appeared on Engadget on Thu, 23 Feb 2012 16:49:00 EST. Please see our terms for use of feeds.

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Adafruit's Internet of Things Printer combines your love of information, receipts

Love staying connected and using excess paper? Adafruit's got your back with its latest project. The Internet of Things (IoT) printer goes online via an Ethernet jack, printing up data on 2.5 inch wide receipt paper. You can print things like Twitter feeds, news briefs or sports scores using its open source software. Putting the box together requires some soldering and an Arduino, but once you're done, you'll finally be able to live out your fantasies of becoming an old timey stock broker. Video of the printer with a slightly grating Twitter song soundtrack after the break.

Continue reading Adafruit's Internet of Things Printer combines your love of information, receipts

Adafruit's Internet of Things Printer combines your love of information, receipts originally appeared on Engadget on Wed, 22 Feb 2012 19:01:00 EST. Please see our terms for use of feeds.

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ARDUINO WIFI RGB LAMP [IKEA DUDERÖ MODDING]

 

We create an application based on Arduino, that allows you to control brightness and color of a RGB strip LED via local network or Internet through a WiFi or Ethernet shield

How it works

The system that we propose is based on the Arduino UNO, on which are mounted two shield: the Ethernet or WIFI Shield, which provides the connection to LAN, and the RGB shield which mounts three power drivers to control the LED strip.
In Arduino must be loaded different sketch depending of the type of connection you choose (Ethernet or WiFi). The sketch allows you to manage communication via LAN and create a web interface (which will come to those who try to access via a local network) and run the commands received.
Arduino is like a web server, an HTML page is showed through a browser, by introducing into the address bar the IP address corresponding to the ethernet/WIFI shield.

This means that the lamp can be turned on and controlled by any device on the network or remotely via the Internet. The web page shows the current setting of R, G, B of the lamp and allows you to edit them.

 

The shield RGB

Arduino controls the LED channels by a shield very simple, containing three MOSFET enhancement-mode n-channel type P36NF06; each MOSFET is driven on the gate, through a resistor, with the logic signal that Arduino sends. To be precise, pin 3 controls T3 (red), pin 5 controls T2 (green) and pin 6 controls T1 (blue), each line has a status LED, polarized by a limiting resistor (LEDs indicate how it is behaving this channel). Note that Arduino controls the individual transistors by PWM signals, which duty cycle determines the presence and intensity of a certain color; more precisely, the width of the pulses can changes from a minimum to a maximum to decide how much light should be the group of LEDs of the respective color.

The drain of each MOSFET controls the load which must be connected with the anode to the positive line of the common power supply (+); for each channel there is a connector with a positive contact (goes on line common) and a negative (corresponding to the respective drain MOSFET).
We have provided the possibility to power the LEDs in two ways: with the power drawn by Arduino contact Vin (in which case you should close the jumper on Vin) or with a voltage supplied to the terminal PWR (PWR jumper closed on), you can opt for the first solution if you think your lamps absorbs less than 1.5 amps, but if you need more power you have give power apart from the shield, with a suitable power supply.
Note that by closing the jumper on Vin, the Arduino must be supplied at 12 V with a power supply capable of delivering all the current required.

 

R1: 1 kohm
R2: 390 ohm
R3: 180 ohm
R4: 330 ohm
R5: 330 ohm
R6: 330 ohm

T1: STP36NE06
T2: STP36NE06
T3: STP36NE06

LD1: Led 5 mm blue
LD2: Led 5 mm green
LD3: Led 5 mm red

D1: 6A600

- Screw a 2

R1: 1 kohm
R2: 390 ohm
R3: 180 ohm
R4: 330 ohm
R5: 330 ohm
R6: 330 ohm

T1: STP36NE06
T2: STP36NE06
T3: STP36NE06

LD1: Led 5 mm blu (510LB7C)
LD2: Led 5 mm verde
LD3: Led 5 mm rosso

D1: 6A600

Varie:
- Screw 2 via(4 pz.)
- Strip M/F 6 via (2 pz.)
- Strip M/F 8 via (2 pz.)

The sketch

/* IKEA Dudero mods WIFI Version

 created 2011
 by Boris Landoni

 This example code is in the public domain.

http://www.open-electronics.org

http://www.futurashop.it

http://blog.elettronicain.it/

 */

// Inclusione Libreria per Server Web WiFi
#include <WiServer.h>
#include <avr/pgmspace.h>
#include <EEPROM.h>

int red = 3;    // RED LED connected to PWM pin 3
int green = 5;    // GREEN LED connected to PWM pin 5
int blue = 6;    // BLUE LED connected to PWM pin 6
int r=50; int g=100; int b=150;
int rup; int gup; int bup;
int fader=0;
int inc=10;
String inString = String(50);
char buffer[160]; // make sure this is large enough for the largest string it must hold

// Definizione Parametri Rete Wireless
#define WIRELESS_MODE_INFRA	1  // Infrastrutturata (basata su Access Point)
#define WIRELESS_MODE_ADHOC	2  // Ad-hoc (senza Access Point)

unsigned char local_ip[] = {192, 168, 0, 89};      // Indirizzo IP
unsigned char gateway_ip[] = {192, 168, 0, 254};	    // Indirizzo gateway IP
unsigned char subnet_mask[] = {255, 255, 255, 0};   // Subnet Mask
const prog_char ssid[] PROGMEM = {"AP_FES"};	    // SSID access point

// Selezione tipo di cifratura rete Wireless
unsigned char security_type = 3;  // 0 -> nessuna cifratura
                                  // 1 -> cifratura WEP
                                  // 2 -> cifratura WPA
                                  // 3 -> cifratura WPA2

// Password cifratura per WPA/WPA2 (max. 64 cratteri)
const prog_char security_passphrase[] PROGMEM = {"12345678"};

// Password cifratura per WEP 128-bit keys
prog_uchar wep_keys[] PROGMEM = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
				 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
				 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
				 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

// Selezione tipo di rete Wireless infrastrutturata
unsigned char wireless_mode = WIRELESS_MODE_INFRA;

// Variabili per lunghezza SSID e password di cifratura
unsigned char ssid_len;
unsigned char security_passphrase_len;

prog_char string_0[] PROGMEM  = "<html><head><title>Boris's Project</title></head><script language=\"javascript\"> var alphaStr = \"0123456789ABCDEF\";";
prog_char string_1[] PROGMEM  = "var alphaArr = [\"0\",\"1\",\"2\",\"3\",\"4\",\"5\",\"6\",\"7\",\"8\",\"9\",\"A\",\"B\",\"C\",\"D\",\"E\",\"F\"]; var RGB = [";
prog_char string_2[] PROGMEM  = "];function pulsRED(){document.bgColor='#FF0000';RGB = [255,0,0]}function pulsGRE(){document.bgColor='#00FF00';RGB = [0,255,0]}";
prog_char string_3[] PROGMEM  = "function pulsBLU(){document.bgColor='#0000FF';RGB = [0,0,255]}function pulsYEL(){document.bgColor='#FFFF00';RGB = [255,255,0]}";
prog_char string_4[] PROGMEM  = "function pulsPIN(){document.bgColor='#FF00FF';RGB = [255,0,255]}function pulsCEL(){document.bgColor='#00FFFF';RGB = [0,255,255]}";
prog_char string_5[] PROGMEM  = "function pulsWHI(){document.bgColor='#FFFFFF';RGB = [255,255,255]}";
prog_char string_6[] PROGMEM  = " ";
prog_char string_7[] PROGMEM  = "function HEX_from_RGB(){document.bgColor = '#' + DEC_to_HEX(RGB[0]) + DEC_to_HEX(RGB[1]) + DEC_to_HEX(RGB[2]);}";
prog_char string_8[] PROGMEM  = "function adjRED(incr){	RGB[0] += incr;	if (RGB[0] > 255) RGB[0] = 255;	if (RGB[0] < 0) RGB[0] = 0;}";
prog_char string_9[] PROGMEM  = "function adjGRN(incr)	{RGB[1] += incr;if (RGB[1] > 255) RGB[1] = 255;	if (RGB[1] < 0) RGB[1] = 0;}";
prog_char string_10[] PROGMEM  = "function adjBLU(incr)	{RGB[2] += incr;if (RGB[2] > 255) RGB[2] = 255;	if (RGB[2] < 0) RGB[2] = 0;}";
prog_char string_11[] PROGMEM = "function setRED(r) { RGB[0] = r; } function setGRN(g) { RGB[1] = g; } function setBLU(b) { RGB[2] = b; }";
prog_char string_12[] PROGMEM = "function newRGB() { HEX_from_RGB(); } </script> <script language=\"javascript\"> var i_a; ";
prog_char string_13[] PROGMEM = "function DEC_to_HEX(dec) {var n_ = Math.floor(dec / 16); var _n = dec - n_ * 16; return alphaArr[n_] + alphaArr[_n];	}";
prog_char string_14[] PROGMEM = "function HEX_to_DEC(hex){var n_ = alphaStr.indexOf(hex.substring(0,1)); var _n = alphaStr.indexOf(hex.substring(1,2)); return n_ * 16 + _n;	}";
prog_char string_15[] PROGMEM = "function updateFields(){var d = document.colForm;d.r.value = RGB[0];	d.g.value = RGB[1];	d.b.value = RGB[2];	}";
prog_char string_16[] PROGMEM = "function setRGB(){var d = document.colForm; var R = d.r.value;	var G = d.g.value;	var B = d.b.value;";
prog_char string_17[] PROGMEM = "setRED(parseInt(R));	setGRN(parseInt(G));	setBLU(parseInt(B));	newRGB(); updateFields();} </script>";
prog_char string_18[] PROGMEM = "</head><body><center><form method=GET, name=\"colForm\"><h1>The INTERNET RGB LAMP</h1> <table> <tr> <td valign=\"top\"> <input type=\"text\" name=\"r\"> ";
prog_char string_19[] PROGMEM = "<input type=\"text\" name=\"g\"> <input type=\"text\" name=\"b\"> <input type=\"button\" value=\"Calculate\" onclick=\"setRGB();\">";
prog_char string_20[] PROGMEM = " </td></tr> <tr><td><CENTER><input type=\"button\" class=\"tweak\" value=\"Red+\" onclick=\"adjRED(i_a);newRGB();updateFields();\">";
prog_char string_21[] PROGMEM = "<input type=\"button\" class=\"tweak\" value=\"Green+\" onclick=\"adjGRN(i_a);newRGB();updateFields();\"><input type=\"button\" class=\"tweak\" value=\"Blue+\"";
prog_char string_22[] PROGMEM = "onclick=\"adjBLU(i_a);newRGB();updateFields();\"> <select name=\"inc\" onchange=\"i_a = parseInt(document.colForm.inc.options";
prog_char string_23[] PROGMEM = "[document.colForm.inc.selectedIndex].value);\"> <option value=\"1\"";//selected
prog_char string_24[] PROGMEM = ">inc/speed = 1x <option value=\"5\"";
prog_char string_25[] PROGMEM = ">inc/speed = 5x <option value=\"10\"";
prog_char string_26[] PROGMEM = ">inc/speed = 10x <option value=\"25\"";
prog_char string_27[] PROGMEM = ">inc/speed = 25x <option value=\"50\"";
prog_char string_28[] PROGMEM = ">inc/speed = 50x <option value=\"100\"";
prog_char string_29[] PROGMEM = ">inc/speed = 100x <option value=\"150\"";
prog_char string_30[] PROGMEM = ">inc/speed = 150x <option value=\"200\"";
prog_char string_31[] PROGMEM = ">inc/speed = 200x <option value=\"250\"";
prog_char string_32[] PROGMEM = ">inc/speed = 250x</select><input type=";
prog_char string_33[] PROGMEM = "\"button\" class=\"tweak\" value=\"Red-\" onclick=\"adjRED(0-i_a);newRGB();updateFields();\"><input type=\"button\" class=\"tweak\" value=\"Green-\"";
prog_char string_34[] PROGMEM = "onclick=\"adjGRN(0-i_a);newRGB();updateFields();\"><input type=\"button\" class=\"tweak\" value=\"Blue-\" onclick=\"adjBLU(0-i_a);newRGB();updateFields();\">";
prog_char string_35[] PROGMEM = "</CENTER></td> <tr><td><CENTER>Fader<input type=\"radio\" name=\"fad\" value=\"1\"";
prog_char string_36[] PROGMEM = "/> On<input type=\"radio\" name=\"fad\" value=\"0\" ";
prog_char string_37[] PROGMEM = "/> Off</CENTER></td></tr> </tr></td> </tr> <input type=\"submit\" style=\" width:80;height:44px;background-color:FF0000;\" onclick=\"pulsRED();updateFields();\";>";
prog_char string_38[] PROGMEM = "<input type=\"submit\" style=\" width:80;height:44px;background-color:00FF00;\" onclick=\"pulsGRE();updateFields();\";>";
prog_char string_39[] PROGMEM = "<input type=\"submit\" style=\" width:80;height:44px;background-color:0000FF;\" onclick=\"pulsBLU();updateFields();\";>";
prog_char string_40[] PROGMEM = "<input type=\"submit\" style=\" width:80;height:44px;background-color:FFFF00;\" onclick=\"pulsYEL();updateFields();\";>";
prog_char string_41[] PROGMEM = "<input type=\"submit\" style=\" width:80;height:44px;background-color:FF00FF;\" onclick=\"pulsPIN();updateFields();\";>";
prog_char string_42[] PROGMEM = "<input type=\"submit\" style=\" width:80;height:44px;background-color:00FFFF;\" onclick=\"pulsCEL();updateFields();\";>";
prog_char string_43[] PROGMEM = "<input type=\"submit\" style=\" width:80;height:44px;background-color:FFFFFF;\" onclick=\"pulsWHI();updateFields();\";>";
prog_char string_44[] PROGMEM = "<tr><td><CENTER><input type=\"submit\" value=\"Set colors\"></CENTER></td></tr>   ";
prog_char string_45[] PROGMEM = "</table> </form> <script language=\"javascript\">newRGB(); updateFields(); ";
prog_char string_46[] PROGMEM = "i_a = parseInt(document.colForm.inc.options[document.colForm.inc.selectedIndex].value);</script>";
prog_char string_47[] PROGMEM = "<font size= 2>Powered by Open-Electronics.org - Boris Landoni</font>"; //please don't remove  ";
prog_char string_48[] PROGMEM  = "<br></center></body></html>";
prog_char string_49[] PROGMEM  = "";
prog_char string_50[] PROGMEM  = "";
prog_char string_51[] PROGMEM  = "";

PROGMEM const char *string_table[] = // change "string_table" name to suit
{
string_0,
string_1,
string_2,
string_3,
string_4,
string_5,
string_6,
string_7,
string_8,
string_9,
string_10,
string_11,
string_12,
string_13,
string_14,
string_15,
string_16,
string_17,
string_18,
string_19,
string_20,
string_21,
string_22,
string_23,
string_24,
string_25,
string_26,
string_27,
string_28,
string_29,
string_30,
string_31,
string_32,
string_33,
string_34,
string_35,
string_36,
string_37,
string_38,
string_39,
string_40,
string_41,
string_42,
string_43,
string_44,
string_45,
string_46,
string_47,
string_48,
string_49,
string_50,
string_51
};

void setup()
{
  // start the Ethernet connection and the server:
// Inizializzo WiServer (Gestione_Richieste_Web per creare/trasmettere pagine HTML)
      WiServer.init (Gestione_Richieste_Web);
      // Inizializzo porta seriale
      Serial.begin (9600);
      WiServer.enableVerboseMode (false);

      Serial.println("Serial READY");
      Serial.println("WiFi READY");
      Serial.println("Server READY");

      r = EEPROM.read(1);
      g = EEPROM.read(2);
      b = EEPROM.read(3);
      inc = EEPROM.read(4);
      fader = EEPROM.read(5);
} 

void loop()  { 

    // Avvio WiServer
  WiServer.server_task();

  delay(10);

  if (fader==1){
    funcfader();
  }

}

// Gestione diverse richieste provenienti dal WEB
// INPUT:   URL pagina web richiesta
// OUTPUT:  Flag URL riconosciuto/non riconosciutoo
boolean Gestione_Richieste_Web (char* URL) {
  Serial.print("Richiesta Web - URL->");
  Serial.println(URL); 

  // Se URL richiesto corrisponde a "/" (pagina index)
  if (strcmp (URL, "/") == 0) {
    // Secondo gli I/O creo e invio le pagine Web
    Serial.println("pagina index");
    printWebPage();

    // Ritorno URL è stato riconosciuto
    return true;
  }    // Chiusura if URL richieso corrisponde a "/" (pagina index)

  // Se URL richieso corrisponde a "?OPERATION=ACCENDI_ROSSO
  if (strncmp (URL, "/?r=*",4) == 0) {

    Serial.println("pagina operazione"); 

                char colorArr[5];
                String temp="";
                inString=URL;
                Serial.print("inString: ");
                Serial.println(inString);

                int Pos_r = inString.indexOf("r");
                int Pos_g = inString.indexOf("g");
                int Pos_b = inString.indexOf("b");
                int Pos_i = inString.indexOf("inc");
                int Pos_f = inString.indexOf("fad");
                int End = inString.indexOf("HTTP");
                Serial.print("Pos_r: ");
                Serial.println(Pos_r);
                Serial.print("Pos_g: ");
                Serial.println(Pos_g);
                Serial.print("Pos_b: ");
                Serial.println(Pos_b);
                Serial.print("Pos_i: ");
                Serial.println(Pos_i);
                Serial.print("Pos_f: ");
                Serial.println(Pos_f);
                Serial.print("End: ");
                Serial.println(End);
                if(Pos_r>=0){
                   temp=inString.substring((Pos_r+2), (Pos_g-1));
                   temp.toCharArray(colorArr, 5);
                   r=(atoi(colorArr));
                   Serial.print("red: ");
                   Serial.println(r);
                   EEPROM.write(1, r);
                }
                if(Pos_g>=0){
                   temp=inString.substring((Pos_g+2), (Pos_b-1));
                   temp.toCharArray(colorArr, 5);
                   g=(atoi(colorArr));
                   Serial.print("green: ");
                   Serial.println(g);
                   EEPROM.write(2, g);
                }         

                if(Pos_b>=0){
                   temp=inString.substring((Pos_b+2), (Pos_i-1));
                   temp.toCharArray(colorArr, 5);
                   b=(atoi(colorArr));
                   Serial.print("blue: ");
                   Serial.println(b);
                   EEPROM.write(3, b);
                }      

                if(Pos_i>=0){
                   temp=inString.substring((Pos_i+4), (Pos_f-1));
                   temp.toCharArray(colorArr, 5);
                   inc=(atoi(colorArr));
                   Serial.print("inc: ");
                   Serial.println(inc);
                   EEPROM.write(4, inc);
                } 

                if(Pos_f>=0){
                   temp=inString.substring((Pos_f+4), (End-1));
                   temp.toCharArray(colorArr, 5);
                   fader=(atoi(colorArr));
                   Serial.print("fader: ");
                   Serial.println(fader);
                   EEPROM.write(5, fader);
                }     

               if ((Pos_r>=0)&&(Pos_g>=0)&&(Pos_b>=0)) {
                 rgb(r,g,b);
               }

    // Secondo gli I/O creo e invio le pagine Web
    printWebPage();

    // Ritorno URL è stato riconosciuto
    return true;
  }    // Chiusura if URL richieso corrisponde a "?OPERATION=ACCENDI_ROSSO"

  // Ritorno URL non riconosciuto
  return false;
}

 void printWebPage2()
{
      int tmp=0;
      Serial.println("printWebPage");
      // send a standard http response header

//      WiServer.print("HTTP/1.1 200 OK");
//      WiServer.print("Content-Type: text/html");
//      WiServer.print();

      //strcpy_P(buffer, (char*)pgm_read_word(&(string_table[0]))); // Necessary casts and dereferencing, just copy.
      //WiServer.print( buffer );
      //Serial.println( buffer );
      for (int i = 0; i < 51; i++)
      {
          //strcpy_P(buffer, (char*)pgm_read_word(&(string_table[i]))); // Necessary casts and dereferencing, just copy.
          //WiServer.print( buffer );
          WiServer.print_P((char*)pgm_read_word(&(string_table[i])));
          //Serial.println( buffer );
          //delay(500);
      }

}          

void printWebPage()
{
      int tmp=0;
      Serial.println("printWebPage");
      // send a standard http response header
      //WiServer.print_P("HTTP/1.1 200 OK");
      //WiServer.print_P("Content-Type: text/html");

      //strcpy_P(buffer, (char*)pgm_read_word(&(string_table[0]))); // Necessary casts and dereferencing, just copy.
      WiServer.print_P((char*)pgm_read_word(&(string_table[0])));
      //Serial.println( buffer );
      for (int i = 1; i < 51; i++)
      {
          /*if (i==9)
          {
              strcpy_P(buffer, (char*)pgm_read_word(&(string_table[i])));  //butto tutto nell'array buffer
              for (tmp=0 ; tmp < sizeof(buffer); tmp++)
              {
                if (buffer[tmp]=='#')
                {
                  //Serial.println( "trovato ##### " ); 

                }

              }
          }
          else
          {
            strcpy_P(buffer, (char*)pgm_read_word(&(string_table[i]))); // Necessary casts and dereferencing, just copy.
          }*/
          //strcpy_P(buffer, (char*)pgm_read_word(&(string_table[i]))); // Necessary casts and dereferencing, just copy.
          WiServer.print_P((char*)pgm_read_word(&(string_table[i])));
          //Serial.println( buffer );
          if (i==1)
          {
            char tmpstr[4];
            WiServer.print( itoa(r,tmpstr,10) );
            //Serial.println( itoa(r,tmpstr,10) );
            WiServer.print( "," );
            //Serial.println("," );
            WiServer.print( itoa(g,tmpstr,10) );
            //Serial.println( itoa(g,tmpstr,10) );
            WiServer.print( "," );
            //Serial.println( "," );
            WiServer.print( itoa(b,tmpstr,10) );
            //Serial.println( itoa(b,tmpstr,10) );
          }

          if (i==23){if (inc==1){WiServer.print("selected");}}
          if (i==24){if (inc==5){WiServer.print("selected");}}
          if (i==25){if (inc==10){WiServer.print("selected");}}
          if (i==26){if (inc==25){WiServer.print("selected");}}
          if (i==27){if (inc==50){WiServer.print("selected");}}
          if (i==28){if (inc==100){WiServer.print("selected");}}
          if (i==29){if (inc==150){WiServer.print("selected");}}
          if (i==30){if (inc==200){WiServer.print("selected");}}
          if (i==31){if (inc==250){WiServer.print("selected");}}

          if (i==35)
          {
            if (fader==1){
              WiServer.print("checked");
            }
          }
          if (i==36)
          {
            if (fader==0){
              WiServer.print("checked");
            }
          }
      }
     Serial.println("FINE printWebPage"); 

}

void funcfader(){
    Serial.println("fader");
    if (rup==1){r+=1;}
    else{r-=1;}
    if (r>=255){rup=0;}
    if (r<=0){rup=1;}

    if (gup==1){g+=1;}
    else{g-=1;}
    if (g>=255){gup=0;}
    if (g<=0){gup=1;}

    if (bup==1){b+=1;}
    else{b-=1;}
    if (b>=255){bup=0;}
    if (b<=0){bup=1;}

    delay(inc*2);
    rgb(r, g, b);
}

void rgb(int r, int g, int b)
{

  Serial.print("RGB: ");
  Serial.print(r);
  Serial.print(" ");
  Serial.print(g);
  Serial.print(" ");
  Serial.print(b);
  if (r>255) r=255;
  if (g>255) g=255;
  if (b>255) b=255;
  if (r<0) r=0;
  if (g<0) g=0;
  if (b<0) b=0;

  analogWrite(red, r);
  analogWrite(green, g);
  analogWrite(blue, b);
}

 

/* IKEA Dudero mods Ethernet Version

 created 2011
 by Boris Landoni

 This example code is in the public domain.

http://www.open-electronics.org

http://www.futurashop.it

http://blog.elettronicain.it/

 */

#include <SPI.h>
#include <Ethernet.h>
#include <avr/pgmspace.h>
#include <EEPROM.h>

int red = 3;    // RED LED connected to PWM pin 3
int green = 5;    // GREEN LED connected to PWM pin 5
int blue = 6;    // BLUE LED connected to PWM pin 6
int r=50; int g=100; int b=150;
int rup; int gup; int bup;
int fader=0;
int inc=10;
String inString = String(50);
char buffer[160]; // make sure this is large enough for the largest string it must hold

byte mac[] = {  0x90, 0xA2, 0xDA, 0x00, 0x1D, 0x89 };
byte ip[] = { 192,168,0,88 };
byte gateway[] = { 192, 168, 0, 1 };
byte subnet[] = { 255, 255, 255, 0 };

/*

*/

prog_char string_0[] PROGMEM  = "<html><head><title>Boris's Project</title></head><script language=\"javascript\"> var alphaStr = \"0123456789ABCDEF\";";
prog_char string_1[] PROGMEM  = "var alphaArr = [\"0\",\"1\",\"2\",\"3\",\"4\",\"5\",\"6\",\"7\",\"8\",\"9\",\"A\",\"B\",\"C\",\"D\",\"E\",\"F\"]; var RGB = [";
prog_char string_2[] PROGMEM  = "];function pulsRED(){document.bgColor='#FF0000';RGB = [255,0,0]}function pulsGRE(){document.bgColor='#00FF00';RGB = [0,255,0]}";
prog_char string_3[] PROGMEM  = "function pulsBLU(){document.bgColor='#0000FF';RGB = [0,0,255]}function pulsYEL(){document.bgColor='#FFFF00';RGB = [255,255,0]}";
prog_char string_4[] PROGMEM  = "function pulsPIN(){document.bgColor='#FF00FF';RGB = [255,0,255]}function pulsCEL(){document.bgColor='#00FFFF';RGB = [0,255,255]}";
prog_char string_5[] PROGMEM  = "function pulsWHI(){document.bgColor='#FFFFFF';RGB = [255,255,255]}";
prog_char string_6[] PROGMEM  = "";
prog_char string_7[] PROGMEM  = "function HEX_from_RGB(){document.bgColor = '#' + DEC_to_HEX(RGB[0]) + DEC_to_HEX(RGB[1]) + DEC_to_HEX(RGB[2]);}";
prog_char string_8[] PROGMEM  = "function adjRED(incr){	RGB[0] += incr;	if (RGB[0] > 255) RGB[0] = 255;	if (RGB[0] < 0) RGB[0] = 0;}";
prog_char string_9[] PROGMEM  = "function adjGRN(incr)	{RGB[1] += incr;if (RGB[1] > 255) RGB[1] = 255;	if (RGB[1] < 0) RGB[1] = 0;}";
prog_char string_10[] PROGMEM  = "function adjBLU(incr)	{RGB[2] += incr;if (RGB[2] > 255) RGB[2] = 255;	if (RGB[2] < 0) RGB[2] = 0;}";
prog_char string_11[] PROGMEM = "function setRED(r) { RGB[0] = r; } function setGRN(g) { RGB[1] = g; } function setBLU(b) { RGB[2] = b; }";
prog_char string_12[] PROGMEM = "function newRGB() { HEX_from_RGB(); } </script> <script language=\"javascript\"> var i_a; ";
prog_char string_13[] PROGMEM = "function DEC_to_HEX(dec) {var n_ = Math.floor(dec / 16); var _n = dec - n_ * 16; return alphaArr[n_] + alphaArr[_n];	}";
prog_char string_14[] PROGMEM = "function HEX_to_DEC(hex){var n_ = alphaStr.indexOf(hex.substring(0,1)); var _n = alphaStr.indexOf(hex.substring(1,2)); return n_ * 16 + _n;	}";
prog_char string_15[] PROGMEM = "function updateFields(){var d = document.colForm;d.r.value = RGB[0];	d.g.value = RGB[1];	d.b.value = RGB[2];	}";
prog_char string_16[] PROGMEM = "function setRGB(){var d = document.colForm; var R = d.r.value;	var G = d.g.value;	var B = d.b.value;";
prog_char string_17[] PROGMEM = "setRED(parseInt(R));	setGRN(parseInt(G));	setBLU(parseInt(B));	newRGB(); updateFields();} </script>";
prog_char string_18[] PROGMEM = "</head><body><center><form method=GET, name=\"colForm\"><h1>The INTERNET RGB LAMP</h1> <table> <tr> <td valign=\"top\"> <input type=\"text\" name=\"r\"> ";
prog_char string_19[] PROGMEM = "<input type=\"text\" name=\"g\"> <input type=\"text\" name=\"b\"> <input type=\"button\" value=\"Calculate\" onclick=\"setRGB();\">";
prog_char string_20[] PROGMEM = " </td></tr> <tr><td><CENTER><input type=\"button\" class=\"tweak\" value=\"Red+\" onclick=\"adjRED(i_a);newRGB();updateFields();\">";
prog_char string_21[] PROGMEM = "<input type=\"button\" class=\"tweak\" value=\"Green+\" onclick=\"adjGRN(i_a);newRGB();updateFields();\"><input type=\"button\" class=\"tweak\" value=\"Blue+\"";
prog_char string_22[] PROGMEM = "onclick=\"adjBLU(i_a);newRGB();updateFields();\"> <select name=\"inc\" onchange=\"i_a = parseInt(document.colForm.inc.options";
prog_char string_23[] PROGMEM = "[document.colForm.inc.selectedIndex].value);\"> <option value=\"1\"";//selected
prog_char string_24[] PROGMEM = ">inc/speed = 1x <option value=\"5\"";
prog_char string_25[] PROGMEM = ">inc/speed = 5x <option value=\"10\"";
prog_char string_26[] PROGMEM = ">inc/speed = 10x <option value=\"25\"";
prog_char string_27[] PROGMEM = ">inc/speed = 25x <option value=\"50\"";
prog_char string_28[] PROGMEM = ">inc/speed = 50x <option value=\"100\"";
prog_char string_29[] PROGMEM = ">inc/speed = 100x <option value=\"150\"";
prog_char string_30[] PROGMEM = ">inc/speed = 150x <option value=\"200\"";
prog_char string_31[] PROGMEM = ">inc/speed = 200x <option value=\"250\"";
prog_char string_32[] PROGMEM = ">inc/speed = 250x</select><input type=";
prog_char string_33[] PROGMEM = "\"button\" class=\"tweak\" value=\"Red-\" onclick=\"adjRED(0-i_a);newRGB();updateFields();\"><input type=\"button\" class=\"tweak\" value=\"Green-\"";
prog_char string_34[] PROGMEM = "onclick=\"adjGRN(0-i_a);newRGB();updateFields();\"><input type=\"button\" class=\"tweak\" value=\"Blue-\" onclick=\"adjBLU(0-i_a);newRGB();updateFields();\">";
prog_char string_35[] PROGMEM = "</CENTER></td> <tr><td><CENTER>Fader<input type=\"radio\" name=\"fad\" value=\"1\"";
prog_char string_36[] PROGMEM = "/> On<input type=\"radio\" name=\"fad\" value=\"0\" ";
prog_char string_37[] PROGMEM = "/> Off</CENTER></td></tr> </tr></td> </tr> <input type=\"submit\" style=\" width:80;height:44px;background-color:FF0000;\" onclick=\"pulsRED();updateFields();\";>";
prog_char string_38[] PROGMEM = "<input type=\"submit\" style=\" width:80;height:44px;background-color:00FF00;\" onclick=\"pulsGRE();updateFields();\";>";
prog_char string_39[] PROGMEM = "<input type=\"submit\" style=\" width:80;height:44px;background-color:0000FF;\" onclick=\"pulsBLU();updateFields();\";>";
prog_char string_40[] PROGMEM = "<input type=\"submit\" style=\" width:80;height:44px;background-color:FFFF00;\" onclick=\"pulsYEL();updateFields();\";>";
prog_char string_41[] PROGMEM = "<input type=\"submit\" style=\" width:80;height:44px;background-color:FF00FF;\" onclick=\"pulsPIN();updateFields();\";>";
prog_char string_42[] PROGMEM = "<input type=\"submit\" style=\" width:80;height:44px;background-color:00FFFF;\" onclick=\"pulsCEL();updateFields();\";>";
prog_char string_43[] PROGMEM = "<input type=\"submit\" style=\" width:80;height:44px;background-color:FFFFFF;\" onclick=\"pulsWHI();updateFields();\";>";
prog_char string_44[] PROGMEM = "<tr><td><CENTER><input type=\"submit\" value=\"Set colors\"></CENTER></td></tr>   ";
prog_char string_45[] PROGMEM = "</table> </form> <script language=\"javascript\">newRGB(); updateFields(); ";
prog_char string_46[] PROGMEM = "i_a = parseInt(document.colForm.inc.options[document.colForm.inc.selectedIndex].value);</script>";
prog_char string_47[] PROGMEM = "<font size= 2>Powered by Open-Electronics.org - Boris Landoni</font>"; //please don't remove  ";
prog_char string_48[] PROGMEM  = "<br></center></body></html>";
prog_char string_49[] PROGMEM  = "";
prog_char string_50[] PROGMEM  = "";
prog_char string_51[] PROGMEM  = "";

PROGMEM const char *string_table[] = // change "string_table" name to suit
{
string_0,
string_1,
string_2,
string_3,
string_4,
string_5,
string_6,
string_7,
string_8,
string_9,
string_10,
string_11,
string_12,
string_13,
string_14,
string_15,
string_16,
string_17,
string_18,
string_19,
string_20,
string_21,
string_22,
string_23,
string_24,
string_25,
string_26,
string_27,
string_28,
string_29,
string_30,
string_31,
string_32,
string_33,
string_34,
string_35,
string_36,
string_37,
string_38,
string_39,
string_40,
string_41,
string_42,
string_43,
string_44,
string_45,
string_46,
string_47,
string_48,
string_49,
string_50,
string_51
};

// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
Server server(80);

void setup()
{
  // start the Ethernet connection and the server:
      Serial.begin(9600);
      Ethernet.begin(mac, ip,gateway,subnet);
      server.begin();
      Serial.println("Serial READY");
      Serial.println("Ethernet READY");
      Serial.println("Server READY");
      r = EEPROM.read(1);
      g = EEPROM.read(2);
      b = EEPROM.read(3);
      inc = EEPROM.read(4);
      fader = EEPROM.read(5);
} 

void loop()  {
//  // fade in from min to max in increments of 5 points:
//  for(int fadeValue = 0 ; fadeValue <= 255; fadeValue +=5) {
//    // sets the value (range from 0 to 255):
//    //analogWrite(red, fadeValue);
//    // wait for 30 milliseconds to see the dimming effect
//    rgb(fadeValue,fadeValue,fadeValue);
//    delay(30);
//  }
//
//  // fade out from max to min in increments of 5 points:
//  for(int fadeValue = 255 ; fadeValue >= 0; fadeValue -=5) {
//    // sets the value (range from 0 to 255):
//    //analogWrite(red, fadeValue);
//    // wait for 30 milliseconds to see the dimming effect
//    rgb(fadeValue,fadeValue,fadeValue);
//    delay(30);
//  } 

  if (fader==1){
    funcfader();
  }

      Client client = server.available();

      if (client) {
        Serial.println("client");
        // an http request ends with a blank line
        boolean current_line_is_blank = true;
        while (client.connected()) {

          if (client.available()) {

            char c = client.read();
            if (inString.length() < 50) {
            inString.concat(c);

            } 

            if (c == '\n' && current_line_is_blank) {
                char colorArr[5];
                String temp="";
                Serial.print("inString: ");
                Serial.println(inString);

                int Pos_r = inString.indexOf("r");
                int Pos_g = inString.indexOf("g");
                int Pos_b = inString.indexOf("b");
                int Pos_i = inString.indexOf("inc");
                int Pos_f = inString.indexOf("fad");
                int End = inString.indexOf("HTTP");
                Serial.print("Pos_r: ");
                Serial.println(Pos_r);
                Serial.print("Pos_g: ");
                Serial.println(Pos_g);
                Serial.print("Pos_b: ");
                Serial.println(Pos_b);
                Serial.print("Pos_i: ");
                Serial.println(Pos_i);
                Serial.print("Pos_f: ");
                Serial.println(Pos_f);
                Serial.print("End: ");
                Serial.println(End);

                if(Pos_r>=0){
                   temp=inString.substring((Pos_r+2), (Pos_g-1));
                   temp.toCharArray(colorArr, 5);
                   r=(atoi(colorArr));
                   Serial.print("red: ");
                   Serial.println(r);
                   EEPROM.write(1, r);
                }
                if(Pos_g>=0){
                   temp=inString.substring((Pos_g+2), (Pos_b-1));
                   temp.toCharArray(colorArr, 5);
                   g=(atoi(colorArr));
                   Serial.print("green: ");
                   Serial.println(g);
                   EEPROM.write(2, g);
                }         

                if(Pos_b>=0){
                   temp=inString.substring((Pos_b+2), (Pos_i-1));
                   temp.toCharArray(colorArr, 5);
                   b=(atoi(colorArr));
                   Serial.print("blue: ");
                   Serial.println(b);
                   EEPROM.write(3, b);
                }      

                if(Pos_i>=0){
                   temp=inString.substring((Pos_i+4), (Pos_f-1));
                   temp.toCharArray(colorArr, 5);
                   inc=(atoi(colorArr));
                   Serial.print("inc: ");
                   Serial.println(inc);
                   EEPROM.write(4, inc);
                } 

                if(Pos_f>=0){
                   temp=inString.substring((Pos_f+4), (End-1));
                   temp.toCharArray(colorArr, 5);
                   fader=(atoi(colorArr));
                   Serial.print("fader: ");
                   Serial.println(fader);
                   EEPROM.write(5, fader);
                }     

               if ((Pos_r>=0)&&(Pos_g>=0)&&(Pos_b>=0)) {
                 rgb(r,g,b);
               }
            printWebPage( &client);
            break;
            }
            if (c == '\n') {
            // we're starting a new line
            current_line_is_blank = true;
            } else if (c != '\r') {
            // we've gotten a character on the current line
            current_line_is_blank = false;
            }
          }
        }
        // give the web browser time to receive the data
        delay(1);

        inString = "";
        client.stop();
      }

}

void printWebPage(Client *client)
{
      int tmp=0;
      Serial.println("printWebPage");
      // send a standard http response header
      client->println("HTTP/1.1 200 OK");
      client->println("Content-Type: text/html");
      client->println();

      strcpy_P(buffer, (char*)pgm_read_word(&(string_table[0]))); // Necessary casts and dereferencing, just copy.
      client->println( buffer );
      //Serial.println( buffer );
      for (int i = 1; i < 51; i++)
      {
          /*if (i==9)
          {
              strcpy_P(buffer, (char*)pgm_read_word(&(string_table[i])));  //butto tutto nell'array buffer
              for (tmp=0 ; tmp < sizeof(buffer); tmp++)
              {
                if (buffer[tmp]=='#')
                {
                  //Serial.println( "trovato ##### " ); 

                }

              }
          }
          else
          {
            strcpy_P(buffer, (char*)pgm_read_word(&(string_table[i]))); // Necessary casts and dereferencing, just copy.
          }*/
          strcpy_P(buffer, (char*)pgm_read_word(&(string_table[i]))); // Necessary casts and dereferencing, just copy.
          client->println( buffer );
          if (i==1)
          {
            client->print( r );client->print( "," );client->print( g );client->print( "," );client->print( b );
          }

          if (i==23){if (inc==1){client->print("selected");}}
          if (i==24){if (inc==5){client->print("selected");}}
          if (i==25){if (inc==10){client->print("selected");}}
          if (i==26){if (inc==25){client->print("selected");}}
          if (i==27){if (inc==50){client->print("selected");}}
          if (i==28){if (inc==100){client->print("selected");}}
          if (i==29){if (inc==150){client->print("selected");}}
          if (i==30){if (inc==200){client->print("selected");}}
          if (i==31){if (inc==250){client->print("selected");}}

          if (i==35)
          {
            if (fader==1){
              client->print("checked");
            }
          }
          if (i==36)
          {
            if (fader==0){
              client->print("checked");
            }
          }
//          switch(i){
//
//              case 1:
//                  //itoa (tempC, buffer, 10); client->print( buffer ); Serial.print( buffer ); client->print( "," ); Serial.print( "," ); itoa ((int(tempC * 100) % 100), buffer, 10); client->print( buffer ); Serial.print( buffer ); break;
//              case 2:
//                  //if(digitalRead(rele)) st4=41;
//                  //else st4=42;
//                  //strcpy_P(buffer, (char*)pgm_read_word(&(string_table[st4]))); client->println( buffer ); Serial.println( buffer ); break;
//              case 3:
//                  //strcpy_P(buffer, (char*)pgm_read_word(&(string_table[st6]))); client->println( buffer ); Serial.println( buffer ); break;
//              case 4:
//              case 5:
//              case 6:
//          }
          delay(30);
      }

}

void funcfader(){
    Serial.println("fader");
    if (rup==1){r+=1;}
    else{r-=1;}
    if (r>=255){rup=0;}
    if (r<=0){rup=1;}

    if (gup==1){g+=1;}
    else{g-=1;}
    if (g>=255){gup=0;}
    if (g<=0){gup=1;}

    if (bup==1){b+=1;}
    else{b-=1;}
    if (b>=255){bup=0;}
    if (b<=0){bup=1;}

    delay(inc*2);
    rgb(r, g, b);
}

void rgb(int r, int g, int b)
{

  Serial.print("RGB: ");
  Serial.print(r);
  Serial.print(" ");
  Serial.print(g);
  Serial.print(" ");
  Serial.print(b);
  if (r>255) r=255;
  if (g>255) g=255;
  if (b>255) b=255;
  if (r<0) r=0;
  if (g<0) g=0;
  if (b<0) b=0;

  analogWrite(red, r);
  analogWrite(green, g);
  analogWrite(blue, b);
}

 

 

 

The web page

We conclude seeing the commands and reports available on the web page, there are buttons to issue commands, the option radio to select mode and some boxes where you write parameters. We start from the top, where we find the seven buttons, each relating to a color: each of them set in the lamp the combination of the LEDs R, G and B to obtain the corresponding color; receiving the command Arduino sets its color. Below these buttons are three boxes, with the Calculate button to the right: from left to right, they represent the colors red, green and blue. In each box, you can write, with a number between 0 and 255, the intensity that we have employed the same light, for example, typing 255 in the middle box we illuminate at full intensity green light.
The value in each cell can be varied with the buttons below Red+ Green+ and Blue+ (which increases the light intensity, respectively, red, green and blue) or by Red- Green- and Blue- buttons that reduce the intensity. Clicking on the Calculate button, see what color will obtain, whereas with Set colors send a request for setting the color intensity corresponding to the combination of the three boxes.
The last section of the web page is that of the fader: it is the effect of color change continues, activated by clicking in the option box next to On the same name (Fader) to disable this function you must click Off. By activating the fader, we will see the light of the lamp shades change cyclically from the currently set color, you can also choose between multiple execution speed of the cycle, the drop down menu which is accessed by clicking the middle box inc/speed was above a Fader section.

To build the project

Open Electronics 20 Feb 14:15

Ford sends out OpenXC beta, vehicle-aware apps should be just around the corner

It's six months since Ford partnered with Bug Labs to build OpenXC and now the system is ready for third-party developers to get involved. Rather than following Renault and others down the Android route, OpenXC is a dedicated platform designed to bring together third-party apps and hardware. It comes with an Arduino-based interface module that hooks up to the car's own systems, allowing the software to work with sensors, audio interfaces, safety devices and whatever other add-ons an owner might want to rig up. One app, developed by India's HCL Technologies, is already complete: it sends location updates to selected contacts to warn them if a driver is running late for a meeting. (Finally, Arduino gets to do something useful.)

Ford sends out OpenXC beta, vehicle-aware apps should be just around the corner originally appeared on Engadget on Sat, 18 Feb 2012 02:41:00 EST. Please see our terms for use of feeds.

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Software and firmware for TiDiGino (GSM remote controller with Arduino)

A lot of people who bought the TiDiGino ask me how to test it.
The Gsm Remote Control is provided with bootloader, so you have to insert the prefered sketch that you can find in code.google.
Daniele Denaro wrote a good sketch for TiDiGino, and I’m reporting his tutorial.
Ask me (and him) all do you need.
Author Daniele Denaro

Be careful, because you have to manipulate the environment of development (IDE) 1.0 to insert the new hardware.
In particular replace the file “boards.txt” (see below).
In this new version of the file has been added to the section on hardware TiDiGino.
You should also add the folder “tidigino” that “boards.txt” references (see below).
The changes will be visible to restart the IDE.

Changes from previous version 1.0:

- It was introduced double message mode for alarms. Meaning now is also detected the return to the base level (end alarm) with the possibility to be notified by a second message.

- It is advisable to perform a reset procedure to be safe pressing both the switch P1 and P2 on the first start after installation.

- Fixed some errors in the Java program.

NB. If you have an unmodified hardware TiDiGino, should arrange removal 100-ohm resistor R20 (near the USB connector). Because otherwise…
TiDiGino remains constantly in reset and will not start unless it is also connected to the USB.
(As distinct from the opening of the JP2 jumper that only affects the transparency serial link to the functioning of the operating TiDiGino)

The download includes:
- Installation of this file
- A Italian handbook pdf: TiDiGinoMan.pdf
- A quick Italian reference guide to the controls and the installation and startup: TiDiGinoShort.pdf

- A folder “FirmwareTiDiGino” containing the firmware for TiDiGino;
“TiDiGinoMainV12.ino”: main sketch;
5 modules in the folder “modules”:
“Commands.c”: Commands and their management
“Phone.c” Management Procedures GSM
“Pins.c” Definitions of corresponding pins of the Arduino and global variables
“StateVariables.c” Variables to store the state of the controller and procedures for EEPROM
“Utility.c”: Various procedures used by other modules

- An executable jar file “TiDiGinoW32.jar” and “TiDiGinoW64.jar”
(Containing the Java application interface for Windows32 or Windows64)
(Just extract the files in a directory and appropriate “to click” above)

- A “Library” folder containing (for convenience) Arduino libraries used.
To be installed in the directory “libraries” of the Arduino software (if not already present)

- File “boards.txt” that replaces the same name in the “hardware\arduino”. This file has been added TiDiGino the platform that you will find it listed along with the other (after restarted the IDE). This file is pointing to the directory “Tidigino” of “variants”

- The folder “tdigino” that contains the file “pins_arduino.h” which realizes the map particular hardware of TiDiGino. This folder should be added to other in the templates folder (the folder “hardware\arduino\variants” of the environment Arduino 1.0)

N.B.
To load the sketch of TiDiGino must first edit the path of inclusion forms.
In fact we used the absolute path to solve the problems with the Arduino compiler.
The inclusion of modules is obviously “TiDiGinoMain.ino”.
The easiest thing is to create a folder in the workspace Arduino “TiDiGinoMain”, copy the file “TiDiGinoMain” and the Forms folder, then edit the file, changing paths, and finally activate the upload.
Attention! At the first start after the upload, press P1 and P2 to reset and load the default values ​​to EEPROM.

N.B.
The application interface is in Java (and so you must have Java installed) but it is only for WINDOWS environment because of the library bill for the management of the serial port.
(If the jar was not associated with java you can run it from the console window command “java-jar TiDiGinoWxx.jar”, or creating a link using “javaw-jar TidiGinoWxx.jar”)
Keep in mind that every time you open the serial port you have a firmware restart unless you open jumper JP2 (near the USB connector) that prevents the software reset of Arduino.

N.B.
The software is “open source” and therefore disclaims any liability arising from its use.

MMA7455L Three Axis Digital Output Accelerometer

 

 

This module integrates the sensor MMA7455L (produced by Freescale), able to detect the movement on three axes, and then in every direction. The chip offers the possibility to select three different sensitivity (± 2g, ± 4g, ± 8g) and makes available, on an SPI bus and the I ² C-Bus, the data detected by allowing a more easily read by a microcontroller. There are also two programmable interrupt lines to communicate a certain event, or to perform one or more actions when it detects a certain acceleration or when the module is stopped.

The accelerometer connections are carried out on a male strip pitch 2.54 mm, seven contacts, which allows the insertion in any dip socket, female strip or directly on the printed circuit. The module, powered with a DC voltage of 2.5 to 3.6 V, is suitable for be used in all systems that require the detection of movement, acceleration, such as an alarm systems for vehicle, laboratory analytical instruments, electrical equipment, machinery test and robots.

The module has extremely compact dimensions (10x18x3, 6mm).

Before using this module is necessary to establish (through jumper J1) which must be the voltage applied to pin VIO (Digital Power for I/O pads), levels of the I / O interface must be the same of micro. If the voltage applied between the pin + and – of the module is the same as the interface device is necessary to close J1, while if it is different (for example because the micro operates at 5V) the jumper must be open and the line VIO must be connects to the same supply voltage of the microcontroller. The I ² C-Bus module is assigned to 00111011. For more information on the chip MMA7455L consult the datasheet from the Internet site www.freescale.com.

To show the operation of the module I made a little demo with Arduino.

The connection to the microcontroller is very simple and the pin-out allows you to insert the module in the 6-pin for the analog inputs.
The low absorption permit to use the input pin A0 as level of communicationis (VIO) brought it to a high logic level (5V), while the pin A1 is set to 0, the mass for the MMA7455L.
The main supply voltage is provide from 3.3 V by Arduino.

Thanks to the library Wire.h pin A4 and A5 are used to communicate directly with the module.
The communication is very simple thank the library MMA_7455.h developed by Moritz Kemper.

// Example which uses the MMA_7455 library
// Moritz Kemper, IAD Physical Computing Lab
// moritz.kemper@zhdk.ch
// ZHdK, 20/11/2011

//Modified by Boris Landoni
//www.open-electronics.org

#include <Wire.h> //Include the Wire library
#include <MMA_7455.h> //Include the MMA_7455 library

const int vcc =  A0;
const int gnd =  A1; 

MMA_7455 mySensor = MMA_7455(); //Make an instance of MMA_7455

char xVal, yVal, zVal; //Variables for the values from the sensor
float x, y, z;

void setup()
{
  pinMode(gnd, OUTPUT);
  pinMode(vcc, OUTPUT);
  digitalWrite(gnd, LOW);
  digitalWrite(vcc, HIGH);
  delay (1000);

  Serial.begin(9600);
  Serial.println("start");

  // Set the sensitivity you want to use
  // 2 = 2g, 4 = 4g, 8 = 8g
  mySensor.initSensitivity(8);
  // Calibrate the Offset, that values corespond in
  // flat position to: xVal = -30, yVal = -20, zVal = +20
  // !!!Activate this after having the first values read out!!!
  mySensor.calibrateOffset(0, 0, 0);

}

void loop()
{
  long start = micros();
  //xVal = mySensor.readAxis('x'); //Read out the 'x' Axis
  //yVal = mySensor.readAxis('y'); //Read out the 'y' Axis
  //zVal = mySensor.readAxis('z'); //Read out the 'z' Axis
 /* Serial.print("x: ");
  Serial.print(xVal*0.016, 2);
  Serial.print("\t y: ");
  Serial.print(yVal*0.016, 2);
  Serial.print("\t z: ");
  Serial.println(zVal*0.016, 2);

  Serial.print("x: ");
  Serial.print(xVal,DEC);
  Serial.print("\t y: ");
  Serial.print(yVal,DEC);
  Serial.print("\t z: ");
  Serial.print(zVal,DEC);
  Serial.print("\t summ: ");
  Serial.println((abs(xVal)+abs(yVal)+abs(zVal)),DEC);*/
    if (Serial.available() > 0) {
    int inByte = Serial.read();
      if (inByte==0x01){
        Serial.print( average(5,'x')); //Serial.print( "\t" );
        Serial.print( average(5,'y')); //Serial.print( "\t" );
        Serial.print( average(5,'z')); //Serial.print( "\t" );
      }
    //Serial.print( micros() - start ); Serial.println();
  }
}

char average(int num, char axis){
  long tot=0;
  char val;
  for (int i=1; i<=num; i++){
    val=mySensor.readAxis(axis);
    tot += val;
   //Serial.print( val,DEC );Serial.print( " " );
   delay(2);
  }
  val=tot/num;
  //Serial.println( val );
  return(val);

}

 

The software written in Processing By IAN allows you to immediately verify the correct operation of Freescale chip. A cube will rotate like the movements of the sensor.
The applications of this sensor are different and I will show you just developed.

//This example reads in a single byte value from 0 to 255 and graphs it.

/////////////////////////////////////////
//Basic serial communication code
//by Chang Soo Lee
//ITP, NYU
//Created 11/27/2005
/////////////////////////////////////////

//Modified by Boris Landoni
//www.open-electronics.org

import processing.serial.*;
Serial myPort;
int serial = 1;
byte s8=1, x8=0, y8=0, z8=0, cnt=0;
PFont font;
int numH = 370;  

// This will contain the pixels used to calculate the fire effect
int[][] fire;

// Flame colors
color[] palette;
float angle;
int[] calc1,calc2,calc3,calc4,calc5;

PGraphics pg;

void setup () {
    size(1500, 1000, P2D);

  // Create buffered image for 3d cube
  pg = createGraphics(width, height, P3D);

  calc1 = new int[width];
  calc3 = new int[width];
  calc4 = new int[width];
  calc2 = new int[height];
  calc5 = new int[height];

    colorMode(HSB);

  fire = new int[width][height];
  palette = new color[255];

  // Generate the palette
  for(int x = 0; x < palette.length; x++) {
    //Hue goes from 0 to 85: red to yellow
    //Saturation is always the maximum: 255
    //Lightness is 0..255 for x=0..128, and 255 for x=128..255
    palette[x] = color(x/3, 255, constrain(x*3, 0, 255));

  }

  // Precalculate which pixel values to add during animation loop
  // this speeds up the effect by 10fps
  for (int x = 0; x < width; x++) {
    calc1[x] = x % width;
    calc3[x] = (x - 1 + width) % width;
    calc4[x] = (x + 1) % width;
  }

  for(int y = 0; y < height; y++) {
    calc2[y] = (y + 1) % height;
    calc5[y] = (y + 2) % height;
  }

  //size(270, 440);
  println(Serial.list());
  myPort = new Serial(this, Serial.list()[15], 9600);
  // Load the font. Fonts must be placed within the data
  // directory of your sketch. Use Tools > Create Font
  // to create a distributable bitmap font.
  // For vector fonts, use the createFont() function.
  hint(ENABLE_NATIVE_FONTS);
  //font = loadFont("ArialMT-48.vlw");
  smooth();
    myPort.write(0x01);

}

void draw () {
  if (myPort.available() > 0) {
    serial = (myPort.read());
    s8=0;
    s8+=serial;
    switch(cnt) {
      case 0:
        x8=s8;
         break;
      case 1:
        y8=s8;
         break;
      case 2:
        z8=s8;
         break;
      default:
        cnt=0;
        break;
    }
    if(cnt<2){
      cnt++;
      return;
    }
    cnt=0;
    serialEvent();
  }
  //serial=50;
        //rect(120,numH-serial, 20, serial);
  angle = angle + 0.05;

  // Rotating wireframe cube
  pg.beginDraw();
  pg.translate(width >> 1, height >> 1);
  pg.rotateZ(radians((-x8)));
  pg.rotateX(radians(y8));
  pg.background(0);
  pg.stroke(128);
  pg.scale(80);
  pg.noFill();
  pg.box(4);
  pg.endDraw();

  loadPixels();

  int counter = 0;
    // Do the fire calculations for every pixel, from top to bottom
  for (int y = 0; y < height; y++) {
    for(int x = 0; x < width; x++) {
      // Add pixel values around current pixel

      fire[x][y] =
          ((fire[calc3[x]][calc2[y]]
          + fire[calc1[x]][calc2[y]]
          + fire[calc4[x]][calc2[y]]
          + fire[calc1[x]][calc5[y]]) << 5) / 129; 

      // Output everything to screen using our palette colors
      pixels[counter] = palette[fire[x][y]];

      // Extract the red value using right shift and bit mask
      // equivalent of red(pg.pixels[x+y*w])
      if ((pg.pixels[counter++] >> 16 & 0xFF) == 128) {
        // Only map 3D cube 'lit' pixels onto fire array needed for next frame
        fire[x][y] = 128;
      }
    }
  }
  //updatePixels();

}

void serialEvent(){

   background(255);
  line(70,70,70,370);
  line(70,270,200,270);
  line(70,370,200,370);
  fill(0);
  //textFont(font, 11);
  text("Sensor\nValue",22,80);
  text("Analog Input", 95, 390);

  noFill();

  println(x8+" "+y8+" "+z8);

  rect(100,270, 20, x8);
  rect(140,270, 20, y8);
  rect(180,270, 20, z8);
    text(s8,25,110);
        myPort.write(0x01);

}

DARPA's crowdsourced UAV competition heats up, takes off (video)

Late last year, DARPA launched UAVForge -- a competition that invites contestants to create their very own unmanned aerial vehicles, and submit them for voter-based evaluation. The project is far from over, but competing teams have already started sending in their proof-of-flight videos, giving us a glimpse of what's to come. So far, it looks like the GremLion UAV (pictured above) is the early favorite, after coming out victorious in the first round of voting. Developed by a team from the National University of Singapore, the GremLion looks like a bite-sized Death Star and flies around using a coaxial set of rotors that expand tulip-style out of its shell. Also included in the UAVForge showdown is a guy known as X-MAUS -- an Arduino-controlled quadcopter that can apparently transform into a more aerodynamic plane form upon liftoff. And, rounding out the list of notables is a submission from TU Delft known as the QuadShot, which is basically a miniature B-Wing from Star Wars. Except it's real. Hit up the break to see all three in action.

Continue reading DARPA's crowdsourced UAV competition heats up, takes off (video)

DARPA's crowdsourced UAV competition heats up, takes off (video) originally appeared on Engadget on Wed, 08 Feb 2012 04:58:00 EST. Please see our terms for use of feeds.

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Arduino hack turns Space Invaders alarm into Gmail Notifier (video)

Glaswegian engineer Grant Gibson spied a Space Invaders alarm clock being flogged off cheap ($5) and decided it deserved hacking. When activated, the battery-powered unit scuttled left to right, old-school style as it roused sleepy gamers but Mr. Gibson added a little Arduino magic to turn it into a moving Gmail notifier. Stripping out the battery compartment, he installed a USB-powered Arduino Nano, programmed to poll his email and activate the motion whenever he received a new message. The system is ripe for customization, it can be set up to alert when a front door bell is pushed or a notification received on Twitter -- which you'll be allowed to try as he's included all the details on his blog. The project (including the Nano and Alarm Clock) came to $20 and three hours of his time, which we're understandably impressed by. Head on past the break to see the thing in action and then fling yourself (highland-style) down to the source link to learn how to build your own.

Continue reading Arduino hack turns Space Invaders alarm into Gmail Notifier (video)

Arduino hack turns Space Invaders alarm into Gmail Notifier (video) originally appeared on Engadget on Mon, 06 Feb 2012 17:04:00 EST. Please see our terms for use of feeds.

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Cryoscope gadget simulates tomorrow's weather today (video)

This multi-layered device can't shower you with hail or tan your outdoor-deprived complexion, regrettably. What it can do though, is deliver a direct haptic sensation of how warm or cold it'll be tomorrow, just in case you decide to venture out of your bedroom. An Arduino controller pulls in forecast data from the web and uses it to adjust a Peltier element and a cooling fan, which are housed along with a heat sink inside a neat and tactile aluminum box. The Cryoscope is the handiwork of industrial design student Robb Godshaw, and it's the reason he already knew he'd be wearing a skinny t-shirt and stripey socks in the video after the break.

Continue reading Cryoscope gadget simulates tomorrow's weather today (video)

Cryoscope gadget simulates tomorrow's weather today (video) originally appeared on Engadget on Mon, 06 Feb 2012 08:28:00 EST. Please see our terms for use of feeds.

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Start your Car from Afar using Arduino

This DIYer had a 1st generation iPhone lying around, so he decided to put it to good use.  You can use any phone to accomplish this, even a $10 prepaid phone.  An SMS to the iPhone goes through an Arduino which tells yours car to start or stop from anywhere.  There’s some custom circuitry and programming which is all included in the instructions. When a text message is sent to the iPhone, the iPhone tells the Arduino to start the engine, and the iPhone sends a message back reporting that the start has commenced. Check out the full details to make your own.

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