Hello, guys! I want to follow up on this thread!
I'm using all the files form dywen (thank you so much!) to establish connection between MPR and PD patch.
Everything works the way I need. However, I'm experiencing some sort of latency. When I'm pressing my touch points one by one, the sound only happens with an interval of about half a second. Basically I can't play anything fast.
Is this limitation written in code? (unfortunately I don't know how to read it)
I tried to change block size, it didn't do anything...
Here is my PD patch and the picture of touch panel
https://github.com/basswoman/bela

Thank you for your help!

    this looks nice https://github.com/basswoman/bela/blob/main/image%20of%20touch%20panel.png !

    basswoman Is this limitation written in code? (unfortunately I don't know how to read it)

    As far as I can see from the C++ code, the sensor is read every 25ms (or as fast as possible if it actually takes more than that) and the data is sent to Pd immediately after that, so I'd suspect any additional latency to come from the Pd patch itself, although it is not immediate for me to see where that would happen. I would encourage you to try out the C++ example on Bela: Sensors/MPR121 and see if you notice a similar latency there.

      2 years later

      Hello everyone, I'm trying according to the file uploaded by dywen in 2018, but because I'm a novice in programming, the following errors have occurred in Bela ide. The first few errors can be replaced directly. I don't know how to solve this later? Thank you！
      alt text

        giuliomoro
        Thank you for your reply.It's this link.
        Later on, I saw the MPR121 example in Bela that you mentioned earlier. After I connected the copper board, although I didn't understand C++very well, at least it made a sound......