The ESP8266 combines the timestamp from the GPS ... But to take the idea a step further, [Cristiano] added an OLED and some LEDs to provide feedback, and put the whole thing inside a handsome ...

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 ...