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RA8875 Tutorial and Wiring Diagram
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Please be positive and constructive with your questions and comments.

Re: RA8875 Tutorial and Wiring Diagram

by softweyr on Sat Nov 05, 2016 11:27 pm

Nope, not the power, I've got an external power supply connected. It still says it's working, but still has nothing on the screen. Measured +4.92V on the Vin pin. I'll RMA the screen in the next couple of day unless someone can suggest something else to investigate.

Screen No Workee.jpg
Screen No Workee.jpg (118.56 KiB) Viewed 259 times

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Re: RA8875 Tutorial and Wiring Diagram

by adafruit_support_rick on Sun Nov 06, 2016 8:26 am

Did you try probing the signals I suggested? That way, we can know if it's the driver board or the screen.

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Re: RA8875 Tutorial and Wiring Diagram

by Cwb449 on Sat Feb 10, 2018 10:50 am

I don't understand? I see almost 1700 views on this post. That tells me there is a lot of people who are interested in this and still I can't find any "real" tutorials on how to get this up and running for us "noobs". I just bought the RA8875 and 7" touch screen for a particular project and I'm confused as how to wire it up, run a simple sketch to get started. I'm new to Arduino and it's a lot of fun but still have a lot too learn.

Any "real" help would be appreciated,

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Re: RA8875 Tutorial and Wiring Diagram

by iPostHuman on Thu Apr 12, 2018 6:09 pm

I can't get mine to work either and I have probed it with an Logic analyzer and all signals seem correct yet it won't show anything on the display. Unfortunately, Adafruit doesn't take returns so now I have a cute little blue brick (and possibly the display). I may have to buy the hdmi breakout and hook it up to a RPi just to verify that it isn't the display that is faulty.

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