Color display not working

[profezzorn]

@orntar

Did you connect CS to data4?

No, I did it as listed in the posted link. CS (or TCS) connected to GND.

Guess you missed this part then:

@profezzorn

If you’re planning to use a ST7789-based display, then you need to connect CS/TCS to some pin as well. Any pin will work, but I’ve been using Data4.

@orntar

What version of arduino-proffieboard? (Displays may work better with 4.1 than 3.6)

I do have 3.6, should I try our 4.1?

Try the CS wire thing first.

@orntar

@profezzorn

PS: I highly recommend turning up the optimization levels when using color displays, especially when using one with a fair number of pixels, like this one.

How do I do that? Also, do you mean the number of pixels in the display?

Yes, I mean the number of pixels on the display.
To increase optimization go to Arduino->Tools->Optimization and change it to “fastest” (or “faster” if “fastests” doesn’t work.)