This project targets the common ESP32-C3 "0.42 OLED" boards (often sold as 01Space/diymore ESP32‑C3 SuperMini OLED):
- OLED controller: SSD1306 compatible
- Resolution: 72x40
- I2C pins (common default): SDA = GPIO5, SCL = GPIO6
- I2C address (common default):
0x3C