Arduino Esp8266 Circuit Diagram. Here we just replaced the arduino with esp8266 nodemcu you can use wemos d1 or esp32 in place of nodemcu. Connect the ch pd and vcc line to voltage regulator output gnd and gpio 0 to ground.
Arduino code for esp8266 module. Open serial monitor to see what s going inside the code. Open serial monitor of arduino ide where you see the esp is connected and ready.
This way we can enter into the programming mode and upload the code.
The esp 01 module needs a 3 3v supply. A simplified circuit diagram for using the esp8266 01 module is given below the switch sw2 programming switch should be held pressed to hold the gpio 0 pin to ground. You have already seen the required components and the circuit diagram of the project. Make a circuit as per the given diagram.
