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@strixx if I'm reading the code correctly, the gateway will blink the RX led when receiving data from the controller. In your case that would be the heartbeat message. So the leds are not only radio indicators.

@szybki946 start by reading the getting started guide. By doing that you'll get an introduction to MySensors and how everything fits together. It will save you a lot of time.

@gohan J-Link is in the list of supported programmers at https://github.com/sandeepmistry/arduino-nRF5 so it should work

@fals3illusion the wiring looks good to me.

@kobipes doesn't his latest post describe exactly what he did?

Welcome to the MySensors forums @fals3illusion !
Could you post photos of your wiring? Maybe we can help spot something.
Could you also post the full ./configure command you used?
Were there any warnings or errors when running make?

@tsunami program the sketch to fetch status at boot. See the first example at https://www.mysensors.org/build/dimmer for how it can be done.

@gohan not to derail this thread, but how did you get autocomplete to work? I spent about an hour yesterday in vscode without getting the intellisense to work. It is unable to find standard things like digitalWrite, and unable to find the MySensors functions, even though I have indtalled Microsoft’s Arduino plugin and the MySensors library.

@rwoerz yes, the receive function used rhe same magic as setup and loop - they get called when they should and you don’t need to worry about it.

The receiving node does not need to be a repeater, but no node can receive messages while being asleep.

I think the documentation you are looking for is available at https://www.mysensors.org/download/sensor_api_20 in the ”Handling incoming radio messages” and ”Message manipulation” sections.

https://forum.mysensors.org/topic/5618/domoticz-now-supports-the-mysensors-mqtt-gateway/ might be useful