Raspberry Pi G-Code HAT (Pig) to simplify the wiring for the Voron 2.4 3D printer. It is designed to work in conjunction with [this motor board](https://easyeda.com/matt_1626/voron-controller-board_copy_copy_copy_copy) and [this tool head board](https://easyeda.com/matt_1626/voron-print-head-power_copy) The on board STM32F407V can act as a USB host (or a CAN bus controller, but that's still work in progress) using a [modified version of the Klipper firmware](https://github.com/mattshepcar/klipper) to route packets from the raspberry pi to a tool head board. For USB the two solder links marked USB must be closed to connect the USB lines of the MCU to the micro-fit 3 connector on the motor board. There are four ZXMS6004 MOSFETs which can be used to drive light loads such as fans or solid state relays. This board is not designed to drive heaters directly. There are two thermistor inputs which can be used for monitoring the bed temperature and the electronics enclosure or chamber temperature (the tool head board can also be used to monitor chamber temperature). The STM32 and the raspberry pi also include on-die temperature sensors which can be useful for deciding when to activate cooling fans.