@hard-shovel @igork hi guys, I've just come across this thread. Not sure if you got the problem solved, if not, please let me know or open an issue on the NodeManager's github page. Thanks!

@mfalkvidd said in Suddenly, the node stopped working.: Many thanks @mfalkvidd! You were right! Something strange happened to Arduino. Moreover, I was able to write down the cleareepromconfig example and clear the memory, but after this procedure I could not write anything into the memory of Arduino. I have little experience with Arduino and this happened to me for the first time.