OLED 4pin I2C (GND VDD SCK SDA) with Photon [SOLVED]

[BulldogLowell]

You can verify the wiring and the I2C address with the I2C scanner used in this thread.

NewHaven OLED Display on I2C

I’d definetly try with the 10k pull-ups. Not sure how the display copes with 3.3V instead of 2.8V, but you could always go for 5V via Vin (also pullups to Vin). I think /RES can be left N/C since it should have a pull-up on board. If you want to reset via code, you could use this code with 5V too const int _res = D6; // any pin other than A3 or DAC (not 5V tolerant) void setup() { pinMode(_res, INPUT); // set for hi-Z (=default) ... } void resetDisplay() { pinMode(_res, OUTPUT); dig…

Once you can talk to it, well the rest is easier.