Touchscreen for Printrbot Pro (Donated Version) and Mains Heated Bed

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Brook and the team at Printrbot were kind enough to donate an early version of the Printrbot Pro to me so I could give it a new lease on life for a local school. The Robotics club at Como High School was eager to get their hands on the printer, but I wanted to upgrade it with some modern features first. I added a sleek touchscreen display with Wi-Fi control capabilities (powered by the MKS TFT 28 and the MKS TFT-WIFI). Additionally, I installed a robust Mains 200W Heated Bed using an SSR housed in a compact "Sidecar" enclosure. The printer Brook donated came equipped with one of the F5 Printrboards instead of the standard G2 board found on production Printrbot Pro printers. To get serial communication working with the F5 board, I had to compile the firmware with some custom edits. I've included both the hex file I used for the F5 and my Marlin folder, which includes all the necessary edits. To connect the Tx/Rx outputs from the F5 board to the touchscreen, I had to solder on a few extra pins. The touchscreen can operate off 5V or 12V power; with the WiFi board connected, it's recommended to use 12V for optimal performance. I'm really impressed with the touchscreen display because you can easily edit the graphics using tools available on the makerbase GitHub repository. There's also a text file that allows you to customize buttons and macros on the LCD to suit your personal preferences.