I have built and finished my macropad! I made many changes to make the hackpad work, like adding pull up resistors, and reworking the code from the beginning. Now, I have a functional macropad, and have added 2 layers! My README was also drastically changed, as the file is a lot bigger. Some changes in the CAD files made the cable easier to fit, and the design of the plate was changed. I added a video of the hackpad working IRL. Now, I feel more comfortable with PCBs, coding, and 3-D printing. This was a great learning experience!