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Well, for a while now I've been entertaining the idea of building a remote sensor node to keep track/record of my indoors "balcony orchard".

This project here will be my starting point, a Low-Power Wireless Sensor Node where most of the work is already cut out for me.

It's power consumptions are reported to be:

Sleep Consumption 0.14 mA

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Hello again!

It has been ages since I have been on LMR and I missed you guys something fierce! :-)

I have just built another "generic" Arduino based bot (it WAS NOT fun getting the driver to install in Windows 8!!!)

(I will try and get a picture and more details up when I can, but basically it uses a Arduino Uno, a servo/Sharp rangefinder combo and a L293D bridge chip to control 2 very low power motors driving the wheels in differential form. Like I said, pretty generic.)

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I am at my wits end! Ive spent the last three or so hours trying to get this to work with no avail.

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I've seen a few instructable-type tutorials here and there that just look too good to be true.  My favorite was someone trying to convince you that you could run your flat-screen TV by splicing a AAA battery holder into the power cable provided with it.

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Thats the code that i typed.... The result was red green blue red green-blue red(for a longer period)

And that keeps on repeating.....

But what i actually want is red green blue red-green green-blue red-blue white   And this should repeat....  

int red=12;

int green=8;

int blue=7;

void setup(){

  pinMode(red,OUTPUT);

  pinMode(green,OUTPUT);

  pinMode(blue,OUTPUT);

}

void loop(){

  digitalWrite(red,LOW);

  digitalWrite(green,HIGH);

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I have an Uno controlling a 4 channel Dagu motor controller with encoder support. Got this a month ago. (It's the red PCB version).

Although it works, I have read that I shall not power the motors before powering the control logic.

But does that really mean that if the controller voltage dies out in the field, and there's still juice in the motor batteries, the Dagu controller will burn ?

I saw OddBot said this might be the case, at least if you powered it up in the wrong order.

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Hi.

Has anyone attempted using these? I was wondering how hard it would be to use them with the arduino bootloader for my as-yet-not-started RC system project (I will get round to it soon, hopefully). The Zigduino seems to use them, and they've supplied a library to operate the in-built radio. I'm just wondering whether I'd have to be careful with PCB layout etc. to avoid interference.

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// Tested with IDE 20 and VirtualWire 1.4, only working with those.
// RF Link using VirtualWire to Transmit messages
// simplex (one-way) receiver with a 315MHz RF Link Transmitter module
// tx pin 3 on Duemilanova (arduino)
//vw_setup(300)&n

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I would like to use a code for sending the temperatur and humidity. One day before, I started with sending just a short message like: LMR is cool. TX= Transmitter RX=Reciever

It only worked when I used:

Arduino IDE 020 and VirtualWire 1.10 for RX

and Arduino IDE 020 and VirtualWire 1.10 for TX.

When I use Arduino IDE 1.0.3 and VirtualWire 1.4 for RX 

and Arduino IDE 1.0.3 and VirtualWire (VW) 1.4 for TX it didn't. 

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