1.3″ OLED (128×64, SH1106). 1.5″ OLED (128×128, SH1107). 0.91″ OLED (128×32, SSD1306). 0.96″ OLED (128×64, SSD1306). now(); it.printf(0, 20, id(font1), "%02d:%02d", t.hour, t.minute);. OLED Pin Arduino UNO ESP8266 (D1 Mini) ESP32 -------- ----------- ------------------ ----- VCC 5V / 3.3V 3.3V 3.3V GND GND GND GND SDA A4 D2 (GPIO4) GPIO21 SCL A5 D1 (GPIO5) GPIO22.
