ESP8266 Community Forum

- Thu Aug 17, 2017 3:12 pm #69205 Unfortunately, I put the GPIO16 (D0 of nodemcu) in 8v.

The esp keeps running perfectly, including WiFi. However, the pin has died. When measuring the current of nodemcu, has ~ 200 / 300mA , even in Sleep. What can I do? Is there any way to "remove" the burned / internal short-circuit pin?

Remember, it still * works perfectly...

- Thu Aug 17, 2017 3:34 pm #69207 Have you measured the voltage on the pin and the overall current in different modes of GPIO16? If it is internally shorted to Vcc or GND, you may be able to stop the excess current by setting the PIN as output to either HIGH or LOW... On the nodemcu GPIO16 is also conected to some circuitry on the board (a LED and resistors)... have you checkt that the these still work fine?

- Fri Aug 18, 2017 10:35 am #69242

Have you measured the voltage on the pin and the overall current in different modes of GPIO16? If it is internally shorted to Vcc or GND, you may be able to stop the excess current by setting the PIN as output to either HIGH or LOW... On the nodemcu GPIO16 is also conected to some circuitry on the board (a LED and resistors)... have you checkt that the these still work fine?

OUTPUT->
HIGH = ~1.3V
LOW = ~1.3V

Nodemcu still heating, but working perfectly