Teensy 4.1 Looper Updates

Everything transfers from the Teensy 3.6 to the Teensy 4.1! The only piece of hardware that wasn't tested was the Nintendo DS screen. For the most part, the same pins are used on the Teensy 4.1. I did move the Clear and Play/Stop buttons to pins 38 and 39 to use pins 24 and 25 for Wire2 on the NeoTrellis. The library Adafruit_NeoTrellis.h needs to be modified to reflect Wire2.

The next step is figuring out the code to replace all the buttons with a second Neotrellis.

Here are a couple pictures of the testing process. The first shows the mess of testing everything out. The second is the start of reworking the code for two NeoTrellis. Eventually, the Pimoroni Trackball is supposed to replace the Nintendo DS screen for the fx.