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  1. Jayanth

    Device to connect stackmat timer to Android phones

    It works in exactly the same way as my DIY stackmat display. You can find the documentation for that here: https://jayanth-rajakumar.github.io/ledmat The schematic for this is here: https://jayanth-rajakumar.github.io/btmat
  2. Jayanth

    I made my own stackmat timer display at a fraction of the cost of the original (Demo + Tutorial)

    Not yet, but I'll try to test it on as many timers as possible when I go to a comp in a couple of weeks. I've tried it on a QJ and Gen4 so far, and it was actually quite a pain to get it to work on both. I think if it has to come to that, I'll add some kind of hardware switch to select the...
  3. Jayanth

    I made my own stackmat timer display at a fraction of the cost of the original (Demo + Tutorial)

    Depending on what you already have, this should cost around $15-20 to make. I wrote up a long article describing how to put everything together, and it includes a 16-minute video tutorial. It also contains some interesting technical background. Check it out here...
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