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Beginners • Re: Connecting a 40 Pin LCD on RPI

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It appears to be a RGB parallel display running at 3.3V. That's a good start.

For the hardware you'd need to make a board to interface the display to the GPIO pins on a Pi.

Then you'd need to look at the timings and see if there's a DPI overlay for the Pi that can work with that screen.

As for the touch - I don't think that will be easy to get working.
yes, it's a 24-bit DPI interface. Touch is resistive so would require a touch controller.
You will not be able to connect that though as you're GPIO will be consumed by DPI in there is no pin left. same is valid for backlight control -> no pin left.

When you reduce color dept to 18-bit you can fee-up some GPIO for backlight control as well as an I2C interface but you still will have to find a suitable touch controller (with I2C interface).
timing is in table 5.1 ; dpi-generic is the overlay to use, quite simple, just look at the readme in the 'overlays' folder i.e.

Looking at the pinout makes me assume that it can be connected to the adafruit Kippah https://www.adafruit.com/product/2453 (version with touch support)

I will leave it with the OP to check.

Statistics: Posted by aBUGSworstnightmare — Wed Nov 20, 2024 12:41 pm



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