Hardware

@daulagari Thanks :) It worked, and I have logos on my next sensor pcb.. ;) Had googled all the things that came to my mind before throwing the question in here, but I haven't seen that page before..

I apologize if you are aware of this, but are you pressing the reset button once the sketch is ready to transmit? Using a sparkfun FTDI board with knockoff pro minis, I press the reset button as soon as the first TX light blinks on serial board. If I don't: similar errors.

At the bottom of the linked article it says... Edit: [CNLohr] points out there’s a more preferred toolchain that most people have switched to. https://github.com/esp8266/esp8266-wiki/wiki/Toolchain

@C.r.a.z.y. I usually add store links directly from the build pages that is related to the example. On the main "store" there is a lot of items just for inspiration. Not all have ready-to-use MySensors Arduino examples.

@jonnyfishman said: would it be better to trigger the callback manually to pick up a response? No that won't help (as long as you call gw.process() ).

The plan is to make some LED lights without the need for a wall plug transformer, as they take up space and are fairly hard to hide away. So I'm planning to make some small 220vac->12/5vdc converters with as little components as possible. Link to plan: http://www.instructables.com/id/LED-TUBE-LGHT-AC/

Depending on what gateway you use, another solution could be to implement an MQTT client on Arduino, see http://knolleary.net/arduino-client-for-mqtt/

this is a HopeRf chipset, there is a post on supporting RFM12b already

@BulldogLowell That's exactly right. You stated it more clearly than I did. It's not a problem if you're careful in how you set up your if test but its does warrant a warning to be careful in that regard to anyone using mills() for timing their sensor reads.

@axillent Awesome!

Just got some parts and did some more testing on this so I thought I'd post a reply. The good news is there appears to be a cheap fix. As @Hoffan suggested I did some research on LED drivers. I found this one to work in my testing so far: http://www.ebay.com/itm/181113937482. I have plugged it in directly to the 12V source for 3 hours and it gets warm (maybe 100 degrees Fahrenheit) but by no means hot. I still need to connect it into my sensor and get it working with PWM. My plan is to limit the current before the MOSFET. I hope it works! Thanks again for all the help and suggestions!

ATmega328 is 8 bit.

Cool :) This is my initial sketch, but i'm still tuning it. http://forum.mysensors.org/topic/597/motion-relay-sensor-sketch-help I need to figure out only to send GW messages on an update.

Search for SoftSPI.