Wiring diagram - Pins
- ESP8266 Wifi Serial Module
- Arduino Uno
- Jumper cable
- We need to make minor adjustments in the Arduino IDE program.
- Open the IDE then File > Preferences
- Type "https://arduino.esp8266.com/stable/package_esp8266com_index.json" in the Additional Boards Manager URLs section.
- Tools > Board > Board Manager...
- Type esp8266 and download the resulting dashboard.
- Then select Tools > Motherboard > esp8266 > Generic ESP8266 Module again.
There should not be any software inside the Arduino Uno board. You must upload a blank code to the card;
- File > New Sketch
- Code you need to install.
- Power the Uno board.
- Unplug the 3.3v cable of the Esp module and plug it back in.The board is now in software installation mode!
- Start uploading your code.
- Once installed, unplug the GPIO-0 pin.
- Disconnect and reconnect the 3.3v cable of the Esp module.