Multiple High-Res Input & Output PPM Encoded Signal Streams on Teensy 3.x, LC, and 4.0
Valid pins (input or output) by board type:
Teensy 3.6, 3.5: 5, 6, 9, 10, 20, 21, 22, 23
Teensy 3.2, 3.1: 5, 6, 9, 10, 20, 21, 22, 23
Teensy LC: 6, 9, 10, 20, 22, 23
Teensy 4.0: 6, 9, 10, 11, 12, 13, 14, 15, 18, 19