Hello, I am new here too I have the same problem, I can't see the Teensy (v4.1) in Madmapper. The code transfers well, and the LEDs light up with the test code. (the code I used https://github.com/CaseyJScalf/MadMapper-Teensy-LED/blob/main/MadMapperTeensy.ino ) I tried leaving Teensyduino and Teensy...