The WeMos D1 R1 is actually a Wi-Fi development board based on ESP8266-12E, which looks like an Arduino Uno board but the core part is the ESP-12E chip. Surprisingly boards purchased almost at the ...

Posted in Arduino Hacks, Battery Hacks, how-to, Wireless Hacks Tagged ESP8266, Wemos, Wemos d1, wemos d1 mini, wemos mini d1 ...

The electronics are simple to the extreme, just hook the 4 wires of an 128×64 OLED I2C display to the appropriate pins of the ESP8266 board, and you’re ready to upload the Arduino code [David ...