Using a touchscreen to create Control Voltages (X and Y) and

Grumble

Basic setup, but I was so excited by the result that I hád to post it...
The touchscreen is connected to a AD7873 touch screen digitizer, read out by an Arduino Nano. The results are written in an AD5754 quad 16 bit DAC while the Gate is created by writing to PD7 of the Arduino nano.

For now, only 2 DAC channels are used, but in the near future I will look for other signals to create. I have some ideas...

Also it should be possible to read the pressure, I will look into that too.

touchMegaSCH.pdf

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The schematic used in this setup

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touchMegaSCH.pdf

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gabbagabi · Posted: Mon May 31, 2021 9:50 am Post subject:

Doc Grumble is grumbeling again!
Very nice!
Very Happy

blue hell · Posted: Mon May 31, 2021 10:38 am Post subject:

Cool, nice large size too :)

PHOBoS · Posted: Mon May 31, 2021 6:39 pm Post subject:

awesome !
I've looked at them before but wasn't sure how to use the signals. The AD7873 looks interesting.

Grumble · Posted: Mon May 31, 2021 10:24 pm Post subject:

I used this for a start, couldn’t get it to work but I altered some of the code and now it does work, though not with interrupts.

https://github.com/diaowd/AD7873