Seems the OLED itself is a 3.3V part, but the board has a small LDO on it that converts an external 5V power supply to 3.3V. You could likely convert the OLED module back to 3.3V by soldering a bridge over the correct pins of the LDO (U2), or you could just feed it 5V. Thanks for your reply. this i...

Hi, I have very recently purchased Esp32 Devkit V1 (Esp-wroom-32) and I want to connect it to an OLED which is driven by an 1106 driver as noted on the vendor web page. The pinout of the OLED is quite different from the examples I found online and I tried many of them but none of them seem to be wor...