Here’s some amazing work from maker Blair Kelly:

Arduino Wifly Mini is a remotely operated vehicle that communicates over a WiFi network, can be controlled with an XBOX 360 or PS3 controller, or G27 steering wheel, or any other controller that can be manipulated with Processing’s ProControll library, and features force-feedback and a first-person view. Presently only the G27 wheel and a Logitech F510 controller rumble properly with force-feedback.

My favorite part is that the point-of-view camera inside the car can be set to pan in the direction that you’re steering so that you can see where you’re going. I also love that he implemented force feedback to the controller triggered from sensors on the car. If you’d like to know how he did it all, boy are you in luck. Blair documented this project in incredible detail. Nice work!

Using a web-based phone controller, Steffest controls an array of fourteen percussive instruments that are packed into a setup so tightly I can’t help but use the word “cute.” Despite the amount of instruments, the bot uses only eight servos, six of which play different instruments depending on which direction they swing towards.

The bot provides a convincing Bo-Diddley beat as the maker plays guitar and sings.

The phone’s interface is set up like a standard digital sequencer, and the string is sent to Arduino through a WiFi module and HTTP server.

[via Hacked Gadgets]

More:

• The Modular Electronic Drums of Nick Yulman
• Yellow Drum Machine
• Robot Drummer (of Wahappen Rock and Roll Band)

1. The wiring: I need to check everything, I really thought it was wired up right. Also I wonder about grounding more of the module's pins, to be closer to the WiShield schematic (right).
2. The module might be having a hard time talking to my AirPort, so I'll try turning off security for testing. If that doesn't work, I'll try setting up a second network with one of the misc. wireless routers I've got in the digital dustbin.
3. Look around for other simple example sketches, there might be more info on this module and Arduino in the links I scraped together for the first post on the module.

The shield most used in practice are those that expand the communication of the Arduino board and in particular those that allow to add a network connection to a TCP / IP.
The first shield of this kind were those based on Ethernet technology, which helps the Arduino to connect to a LAN based on Ethernet TCP / IP, and so to Internet.
The convenience of Wi-Fi is now known to all: no more cables to spread (which increases the cost and time of construction of any plant) and full freedom in the positioning of the different nodes of the wireless network.

One of the first companies to focus on Wi-Fi was the AsyncLabs, who proposed a famous WiFi shield, including the appropriate libraries.
What we propose is a new solution for Wi-Fi: this is a shield that the hardware was inspired by that of AsyncLabs, but in addition, we have provided a slot for microSD memory.

The basic component of the shield that we have made is a Wi-Fi module MRF24WB0MA manufactured by Microchip.
The device is a Wi-Fi IEEE 802.11 RF transceiver, with a data rate between 1 and 2 Mbps, and with an internal antenna.
The WiFi shield supports both types of wireless networks infrastructure (BSS) and ad-hoc (IBSS) and is also allowed to connect to secure networks (cryptographers and are supported 64 and 128-bit WEP, WPA/WPA2 and TKIP, AES and PSK).

In our project is using the SPI connection for communication with the WiFi controller through the SDO, SCK and SDI (pin 32, 34 and 35) and, if necessary, can be reset using a button (P1 in the diagram).
Peculiarities of our shield is that it has a SD card slot (SD1 signed in the schematic), managed by Arduino always through the SPI port.
There is also a LED (LD1 signed) used to indicate whether the Wi-Fi is active or not, its management is implemented through a hardware port, so you usually can not be used by software. In the event that was needed precisely this port, you still have a jumper that, when opened, making it available again disconnect the LED pin I / O.
Finally, to complete the hardware of the shield there is a section dedicated to the power, consists of a 3.3 V voltage regulator (indicated with U2).

BOM

The library supports various operating modes, which are Web Server, Web Client, Socket, UDP and WiServer.

The library is constantly evolving, so we have provided a space where they will be published on code.google.com various versions available.

Code Example for WiFi shield

 Web Client

/******************************************************
 SoftwareDemo2WebClientWiFi
 Esempio codice Web Client tramite Wi-Fi
 Autori: Ingg. Tommaso Giusto e Ing. Alessandro Giusto
 Email:  tommro@libero.it
******************************************************/

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

// 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, 1, 250};      // Indirizzo IP
unsigned char gateway_ip[] = {192, 168, 1, 91};	    // Indirizzo gateway IP
unsigned char subnet_mask[] = {255, 255, 255, 0};   // Subnet Mask
const prog_char ssid[] PROGMEM = {"Sitecom"};	    // SSID access point

// Selezione tipo di cifratura rete Wireless
unsigned char security_type = 0;  // 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, 0x09, 0x0a, 0x0b, 0x0c, 0x0d,
				 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;

// Definizione Parametri Google Search
// Indirizzo IP per server www.google.it
uint8 google_ip[] = {209, 85, 148, 106};

// Richiesta GET verso GOOGLE
GETrequest getGoogleSearch (google_ip, 80, "www.google.it", "/search?q=ElettronicaIn");

// Inizializzazione Scheda
void setup() {
  // Inizializzo WiServer (NULL indica non dobbiamo servire pagine Web)
  WiServer.init (NULL);
  // Inizializzo porta seriale
  Serial.begin (9600);
  WiServer.enableVerboseMode (false);

  // Inizializzazione richiesta GET (parametro indica funzione a cui verra' passata la risposta)
  getGoogleSearch.setReturnFunc (Gestione_Risposte_Web);
}

// Variabile memorizzazione riavvio (millisecondi) di esecuzione ricerca
long updateSearch = 0;

// Programma Principale
void loop() {
  // Se passato periodo di attesa esecuzione ricerca
  if (millis() >= updateSearch) {
    // Eseguo ricerca
    getGoogleSearch.submit();
    // Aggiorno tempo di riavvio (attensa di 1 ora)
    updateSearch = updateSearch + (1000 * 60 * 60);
  }

  // Avvio WiServer
  WiServer.server_task();

  // Attesa
  delay(10);
}

// Gestione diverse risposte provenienti dal WEB
void Gestione_Risposte_Web (char* data, int len) {
  // Stampo la risposta proveniente dal WEB su porta seriale
  int i;

  // Stampo i singoli caratteri della risposta proveniente dal WEB su porta seriale
  for (i = 0; i < len; i++) {
    Serial.print(*(data));
    data++;
  }
}

Web Server

/******************************************************
 SoftwareDemo1WebServerWiFi
 Esempio codice Web Server tramite Wi-Fi
 Autori: Ingg. Tommaso Giusto e Ing. Alessandro Giusto
 Email:  tommro@libero.it
******************************************************/

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

// Definizione pin INPUT/OUTPUT
int Pin_Led_Rosso = 7;  // Led rosso uscita digitale 7

// Definizione Variabili Globali Stato Led
byte Stato_Led_Rosso = 0;  // Stato led rosso

// 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, 1, 250};      // Indirizzo IP
unsigned char gateway_ip[] = {192, 168, 1, 91};	    // Indirizzo gateway IP
unsigned char subnet_mask[] = {255, 255, 255, 0};   // Subnet Mask
const prog_char ssid[] PROGMEM = {"Sitecom"};	    // SSID access point

// Selezione tipo di cifratura rete Wireless
unsigned char security_type = 0;  // 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, 0x09, 0x0a, 0x0b, 0x0c, 0x0d,
				 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;

// Inizializzazione Scheda
void setup() {
  // Inizializzo pin usati come INPUT/OUTPUT
  pinMode (Pin_Led_Rosso, OUTPUT);

  // Inizializzo WiServer (Gestione_Richieste_Web per creare/trasmettere pagine HTML)
  WiServer.init (Gestione_Richieste_Web);
  // Inizializzo porta seriale
  Serial.begin (9600);
  WiServer.enableVerboseMode (false);

  // Spengo led rosso
  Led_Rosso_OFF();
}

// Programma Principale
void loop() {
  // Avvio WiServer
  WiServer.server_task();
}

// Gestione diverse richieste provenienti dal WEB
// INPUT:   URL pagina web richiesta
// OUTPUT:  Flag URL riconosciuto/non riconosciutoo
boolean Gestione_Richieste_Web (char* URL) {
  // Se URL richieso corrisponde a "/" (pagina index)
  if (strcmp (URL, "/") == 0) {
    // Secondo gli I/O creo e invio le pagine Web
    Invia_Pagina_Web();

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

  // Se URL richieso corrisponde a "?OPERATION=ACCENDI_ROSSO
  if (strcmp (URL, "/?OPERATION=ACCENDI_ROSSO") == 0) {
    // Accendo led rosso
    Led_Rosso_ON();
    Stato_Led_Rosso = 1;

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

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

  // Se URL richieso corrisponde a "?OPERATION=SPEGNI_ROSSO"
  if (strcmp (URL, "/?OPERATION=SPEGNI_ROSSO") == 0) {
    // Spengo led rosso
    Led_Rosso_OFF();
    Stato_Led_Rosso = 0;

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

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

  // Ritorno URL non riconosciuto
  return (false);
}

// Funzione che, secondo gli I/O, crea e invia le pagine Web
void Invia_Pagina_Web() {
  // Usando le funzioni WiServer.print trasmette al pagina Web da visualizzare
  WiServer.print ("<html>");
  WiServer.print ("<head>");
  WiServer.print ("<meta http-equiv=""refresh"" content=""10;url=http://");
  WiServer.print (local_ip[0], DEC);
  WiServer.print (".");
  WiServer.print (local_ip[1], DEC);
  WiServer.print (".");
  WiServer.print (local_ip[2], DEC);
  WiServer.print (".");
  WiServer.print (local_ip[3], DEC);
  WiServer.print ("/"" />");
  WiServer.print ("</head>");
  WiServer.print ("<p align=""center"">");
  WiServer.print ("Hello World!<br>");
  WiServer.print ("Esempio Web Server tramite librerie WiShield<br>");
  WiServer.print ("By Ingg. Tommaso Giusto e Ing. Alessandro Giusto<br>");
  WiServer.print ("(tommro@libero.it)<br>");

  // Se led rosso spento
  if (Stato_Led_Rosso == 0) {
    WiServer.print ("<form>Led rosso spento<br>");
    WiServer.print ("<method=GET>");
    WiServer.print ("<input type=submit name=OPERATION value=ACCENDI_ROSSO></form><br>");
  }    // Chiusura if led rosso spento
  // Se led rosso acceso
  else {
    WiServer.print ("<form>Led rosso acceso<br>");
    WiServer.print ("<method=GET>");
    WiServer.print ("<input type=submit name=OPERATION value=SPEGNI_ROSSO></form><br>");
  }    // Chiusura if led rosso acceso

  // Termino pagina HTML
  WiServer.print ("</html>");
}

// Accende il led rosso
void Led_Rosso_ON() {
  digitalWrite (Pin_Led_Rosso, LOW);
}

// Spegne il led rosso
void Led_Rosso_OFF() {
  digitalWrite (Pin_Led_Rosso, HIGH);
}

• AsyncLabs used to sell a few products based on the MRF24WB0MA: the BlackWidow Arduino-compatible board ($75), compact YellowJacket ($55) Arduino-compatible, and the WiShield Arduino shield ($55). AsyncLabs stopped sales last March, but fortunately EAGLE-format schematics and board files are still online (eg. WiShield V1 and V2) and the library for Arduino too.
• Diligent sells a PmodWiFi ($60) module with a 12-pin (2x6, .1" pitch) header.
• Microchip sells a Wi-Fi PICtail/PICtail Plus breakout module ($60) with a 28-pin (2x14, .1" pitch) header,
• MikroElektronika has two options using MRF24WB0MA's: WiFi PROTO ($54) and EasyWiFi ($59).
• OpenPICUS sells the Flyport module (€49, ~$64) which includes a Microchip PIC 24F and has an IDE for programming as a standalone module.
• Seeed Studio sells the WiFi Bee ($70) with 2.0mm XBee header breakouts and an ATmega328 on board.