A minimal example that demonstrates how to drive an SSD1306 I2C OLED display from an Arduino UNO R4 using the Adafruit SSD1306 and Adafruit GFX libraries. The project prints a few lines on the OLED ...

(Updated and added in code with buttons to adjust time, also still has the AHT10 sensor.July 28, 2024 Version 4) This sketch is used for testing bitmaps numbers on 5 Oleds displays. This is the ...

Total mastery over the pinout and functionality of the PCA9306 for conversion of logic levels from 5V to 3.3V. A step-by-step interfacing diagram for the PCA9306 to Arduino UNO. Working example with ...