olikraus:
@TheCoolest
In the initial thread it was written that the display is from aliexpress, but the datasheed given is from dfrobot. So i do not think that the datasheet is helpfull in this case.Do I need to remove R20 to R21 and R18 to R19?
Exactly. Setting BS1 and BS2 to zero (that means resoldering both resistors to the 0 position) will put the display into SPI mode. The datasheet of the controller and also the datasheet from dfrobot will tell you where to find the SPI pins.
D0 = CLK
D1 = Data In
D/C = A0Oliver
Thanks a lot! OLED displayed "Hello World"!
But another question is that the backlight is dark, should I need to add another power to some pins(V0)? my arduino only supply 5V.
thanks!