To blink an external LED with our ESP32 we need to follow the following schematic diagram. ESP32. LED. GND. Resistor to Cathode of LED. GPIO23. Anode. Take note of the Anode and Cathode pins of the LED and don’t forget to add the 220 Ohm current limiting resistor to prevent our LED from being busted. donsky. GfvGblG.

cara membuat lampu led berkedip