I’m trying to use an OLED screen with my Wemos D1 mini but nothing I try is working. I’ve tried all examples I can find on Google but non of them will make the screen even give a little sign of life.
I’ve also tried an I2C scanner which only says that no devices could be found.
I’ve tried different addresses, the default 0x3C and both printed addresses on the screen, 0x7A and 0x78 without any luck. But since the I2C scanner isn’t finding it, I assume the address is a later problem.
But let’s start from the beginning, have I connected everything correctly?
VCC → 3V3
GND → GND
SCL → D2
SDA → D1