esp8266
1. Install ESP8266 Board Support in Arduino IDE Open Arduino IDE . Go to File → Preferences . In the "Additional Board Manager URLs" field, add the following URL: bash https://arduino.esp8266.com/stable/package_esp8266com_index.json Click OK . 2. Install ESP8266 Board Package Go to Tools → Board → Boards Manager . In the search bar, type ESP8266 . Select "ESP8266 by ESP8266 Community" and click Install . Wait for the installation to complete. 3. Select the Wemos D1 Board Go to Tools → Board . Scroll down and select "LOLIN (WEMOS) D1 R2 & mini" . 4. Select the Correct Port Connect your Wemos D1 board to your PC using a Micro-USB cable . Go to Tools → Port and select the correct COM port (e.g., COM3, COM4, etc.). If no port is visible, install the CH340 USB Driver Download here . 5. Upload a Test Sketch Upload the following simple sketch to test if the board is working: cpp void setup () { Serial. begin ( 115200 ); Serial. println ( ...