Simple Arduino Sketch

Single-file ESP32 word clock sketch for the Arduino IDE.

File

• wordclock_simple.ino

Arduino IDE setup

1. Install Arduino IDE.
2. Install ESP32 board support.
3. Install the Adafruit NeoPixel library.
4. Open wordclock_simple.ino.
5. Fill in WIFI_SSID and WIFI_PASSWORD.
6. Select an ESP32 board.
7. Select the correct serial port.
8. Upload.

Wiring

• WS2812B DIN -> ESP32 GPIO13
• WS2812B 5V -> 5V or VIN
• WS2812B GND -> GND

Notes

• The sketch expects the same 132-LED serpentine matrix layout as the PDF and inspiration project.
• Change TIME_ZONE if the clock will be used outside Central Europe.