TB6600/HY-DIV268N-5A Stepper Driver Case with 40mm Fan

While rebuilding my old MaxNC-15 CNC Mill, I decided to strip the antiquated electronics off and replace it with a Raspberry Pi with a Protoneer RPi-CNC HAT board connected to several external HY-DIV286N-5A drivers and modern hybrid bipolar stepper motors. When I started the project, little did I know how much of a "piece of junk" the HY-DIV286N-5A driver board, and it many variations, truly is. If you decide to use these drivers, don't expect to just plug them on and use them -- expect to rew