I have an Arduino Uno and I would like to attach a Waveshare 1.54“ display (red, black & white) to it.
All the specs tell me that it consumes 3.3 V which I have readily available on the Arduino Uno.
I could not get the display to work until I attached the Power pin to 5V instead of 3.3V.
I did try this with two different ePaper displays and the situation was the same.
I also tried to power the display with a Raspberry Pi‘s 3.3V (with the GNDs connected). But this did not work either.
So I am wondering what I am missing here, is it simply a power issue and my Arduino can‘t deliver the necessary current?