This repository contains the source code for the firmware running on the hopper board of the 3devo GP20 plastic shredder.
To compile this firmware, the
(3devo-modified) stm32duino
core and Arduino-3devo board
description files need to be installed into the hardware subdirectory
of your Arduino sketchbook (these two are also included as submodules in
this repository, so if you configure the Arduino IDE Sketchbook path to
point to this repository, they should also be loaded as needed). Then
select "GP20 Hopperboard" in the IDE and compile the firmware.
A compiled version of this firmware is normally included in the GP20's main firmware, and uploaded on every startup through a bootloader running on the microcontroller.
This firmware is very distantly based on bootloader-attiny written by Erin Tomson. All code in this repository is licensed under the GPL, version 3. See the LICENSE file for the full license.