ESP8266 Community Forum

- Sat Jun 23, 2018 10:03 am #76586 ESP8266, ESP-12F module, Arduino core

For purity of experiment I've cleaned the code and left it with just the single pin inicialized as OUTPUT, and pull it HIGH with digitalWrite

Code: Select all   while( 1 ){
      digitalWrite(LED, 1);
      delay (2000);
      digitalWrite(LED, 1);
      delay (2000);
   }


this is what I see


do you see that ripple? it about 0.1Hz or so.
The bright LED, being connected, distinctly blinking (for normal LED it is not really obvious). All GPIOs behaving similarly. Could anybody give any hint, why this coud happen?

- Mon Jun 25, 2018 6:54 am #76616 the second is digitalWrite(LED, 0); of course sorry