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BTT PiTFT43 v2.1 install help


quad121

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Good evening to you all. I am looking to swap a 7” Raspberry Pi  touchscreen to a BTT PiTFT43 v2.1.

The RPi used the ribbon cable and a supply cable whereas the new screen seems to only use a ribbon cable NO separate power supply.

I tried disconnecting the RPi and just plugging in the BTT, but the screen never lit up, it does get warm though over time.

I don’t know if it needs any alternative configuration different to the old screen.

I’ve already got ‘klipperscreen’ installed and working with the RPi screen.

I also noticed after plugging in the BTT screen I got a warning come up on mainsail(see picture)

The Raspberry Pi I’m using is a 4b which is fed by its own power supply (meanwell RS-25, 5v).as Voron spec. Via the gpio pins

Any help would be much appreciated

 

IMG_0132.png

Edited by quad121
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You probably have checked but is the cable in the correct orientation for the BTT PiTFT43?

PiTFT50connections.thumb.webp.617abb7dad334069710e8d3a277e6055.webp

If it is upside done, the screen won't work (will stay black) and it may be the cause for the under voltage error

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Many thanks for your reply. Sometimes you should double check things before saying to yourself ‘there’s a problem’ and this is one of those moments. 
By the way you were correct, I was connecting the ribbon the wrong way round! I don’t often do this but my excuse is it must’ve been getting too late for this old man to be working on this!

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