I had bought these a while ago and just got around to experimenting with them. I’ve hooked it up as shown in the attached schematic and when I turn on power, I don’t see anything on the screen. Using a 5V, 16Mhz Arduino Pro Mini as the MCU board that is being programmed using a FTDI basic 5V. Using Adafruit’s GFX and SD1306 libraries. Following the wiring guide shown here. What am I missing?
Edit: attached photos of the actual module that I have. It seems the original site has a different one now without the CS pin.