Nodemcu(esp8266) is constantly reseting

[John93]

I guess rst cause:4 is a watchdog timer issue. Check this out:

Prevent Crashes and Resets - Heartbeat and Watchdog Timers

I’ve seen several topics running into WDT issues so I thought it might help to write a short post concerning this, touching the basics. ESP Watchdog Timers All ESP’s are ‘fitted’ with 2 watchdog timers (WDT), a software WDT and a hardware WDT. If these ‘dogs’ are not regularly ‘fed’ then the ESP is ‘bitten’ and it resets. This feeding process goes automatically and you usually don’t have to do anything with it. As far as I know there are at least 3 functions during which the dog is fed: loop()…