@arrawx set a global variable in receive(). In loop, look at the variable and call SetCurrentState2Hardware(). In SetCurrentState2Hardware, after each wait(), check the variable and call return immediately if the value is different from the expected value. Calling wait() from inside receive will cause the current message being overwritten when the next message arrives.

@arrawx may be related to this?

@boots33 said in How to tell if mysensors library starts up successfully?: #define MY_TRANSPORT_WAIT_READY_MS 3000 Hi, thank you very much ! I am using the latest 2.2.rc2 version. Will give the preprocessor statement above a try ... thank you very much, Lars

Thank you all for your comments! We ended up discarding the acer and bought an asus gaming laptop at a similar price. So far my son is very satisfied.

@Mark-Swift In the sensebender sketch I replaced gw.send(msgTemp.set(temperature,1)); with if(gw.send(msgTemp.set(temperature,1))) { digitalWrite(LED_PIN,LOW); } else { digitalWrite(LED_PIN,HIGH); } LED is OFF if meassages are successfully delivered. LED turns ON if meassage delivery fails and stays ON until a new meassage is successfully delivered. Note that I use mysensors 1.5 as I did not yet update to mysensors 2.0. In 2.0 gw. is not needed

Thanks @AWI! A level converter is exactely what is needed.

Yes it will work. You can also buy from ebay or Aliexpress. links are available here if you scroll down a little bit.