ESP8266 Community Forum

Hey folks,

I just did a little bit on my Esp watering project.
When I connected a pump just to the same power supply the esp stopped working.
No more blue led flash on startup. Is there any possibility to unbrick ?
I'm not an electrician. Is there any explination for this strange behaviour ?

Kind regards

Felix

If you effectively connected the motor directly across the ESP then it was most likely an inductive voltage spike from the motor's high self-inductance when the power was switched.

See: http://www.daycounter.com/Articles/Indu ... pike.phtml

A solution is to protect the ESP from the motor with at least a diode and maybe some chokes.

See: https://en.wikipedia.org/wiki/Flyback_diode

I think it's likely you now have an ex-ESP8266.

Ok this is something I thought about. But I used this 5v 3.3v breadboard powersupplys. The esp on the 3.3 line. The motor on the 5v line. Can it happen this way as well? But good to know, because now I'm wasting no time with the old