I just received one of these Yellow/Blue 128*64 OLED displays which I bought on ebay.
I've connected it up and run an example sketch for the SSD1306 unit but I'm not even seeing the screen illuminate, let alone state anything.
As you can see on the product page it states the board is I2C, but on the board itself it has an SCK pin rather than SCL which I understand is meant to be for SPI rather than I2C?
I've connected it up as per these instructions with GND - GND, VDD - 5V, and I've tried both variations of SDA and SCK to both A5/A5 as well as SDA and SCL.
However, nothing is getting any glimmer of life from the display.
I can't be bothered to claim for a refund as it was a cheap display but I want to know if I'm missing something stupid and it is a functional display or if I should just cut my losses and buy another one elsewhere?
Any suggestions would be greatly appreciated.