I have purchased a couple of SSD1306 OLED displays (128x64), which run on 3.3-5V and the I2C bus; with my Arduino Uno R3 I can get the OLED working (I’m using the example code provided in the Arduino IDE).
The Xiao will not work with the SSD1306 displays and the example code.
There are only 4 pins; 5V, GND, and SDA,SCK. The I2C address is 0x3C.
Any tips/info would be appreciated. Such a simple setup that I can’t imagine why it will not work.