Homemade arduboy is not working

sorry for my poor english :slight_smile:

0.96 SSD1306 7-pin oled screen and arduino pro micro,

GND → GND
VCC → VCC
D0 → D15
D1 → D16
RES → GND
DC → D4
CS → TXO

i loaded the example “Arduboy2/Hello world” into the board, and I see a black screen!
what am I doing wrong?

This is most likely the problem.

I removed the wire from RES and… as there was a black screen, it remained…
what am I doing wrong?? :thinking:

RES/RST should go to port D1 pin 2.

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