EPPG Controller

Arduino based logic for OpenPPG SP140 Throttle Controller

This master branch is only for testing the latest firmware for the and SP140

X4 code has been migrated to a separate repo - https://github.com/openppg/x4-controller

It may not be stable and is not recommended for flying. See stable releases here

Version 6.1 was intially released only for the reworked RP2040 module based controller and being ported to the original RP2040 PCB which is currently in testing. The version shipped with that hardware can be found on the rp2040-module-release branch

Version 6.0 introduced FreeRTOS and is currently only working with RP2040 processors. For M0/SAMD21 processors please use version/5 branch.

For batch 3 (non-telemetry) controllers please see the batch-3 branch.

For batch 2 (Arduino nano based) controllers please see the batch-2 branch.

Build and flash firmware

OpenPPG supports flashing the firmware PlatformIO. Older versions were also compatible with Arduino IDE.

Using PlatformIO

Suitable for Mac, Windows, and Linux

Setup

1. Follow the instructions here for using with VSCode https://platformio.org/install/ide?install=vscode
2. Extract the downloaded code from the repo here (or git clone it)
3. Open the folder using the PlatformIO "open project" option inside of VSCode.

Flash the OpenPPG Code

1. Click the "PlatformIO Build" button inside of VSCode or enter platformio run --target upload in the command line. PlatformIO will automatically download libraries the first time it runs.

Install the driver

Batch 3+ OpenPPG controllers and early SP140 controllers are powered by Atmel’s SAMD21G18A MCU, featuring a 32-bit ARM Cortex® M0+ core. On some operating systems you may need extra drivers to communicate with it. Newer SP140 controllers feature the RP2040 MCU which is a dual-core variant of the ARM Cortex® M0+.

Download and Prepare OpenPPG Code

1. Download the latest controller code zip from here

Flash the OpenPPG Code

1. First make sure the code compiles by hitting the check button in the bottom left "Build".
2. Connect the controller to your computer by using the USB port on the bottom of the controller.
3. Flash the firmware by clicking "Upload" in the bottom left.

Bootloader

The latest batches of OpenPPG SP140 controllers use the UF2 bootloader (compatible with Arduino). It makes firmware updates as simple as drag and drop. Learn more here https://github.com/openppg/uf2-samdx1

Building .uf2 update file

The uf2 bootloader can update firmware with a .uf2 binary file built from a complied .bin firmware file. The .bin file is automatically built when "verifying" the firmware in either Arduino IDE or PIO. Using the uf2-samdx repo above python tool the command to build a compatible .uf2 file should look something like:

$ python3 utils/uf2conv.py eppg-controller/.pio/build/OpenPPG\ CM0/firmware.bin -c -o sp140-update.uf2

Config tool

The open source web based config tool for updating certain settings over USB (without needing to flash firmware) can be found at https://config.openppg.com.

Help improve these docs

Pull requests are welcome for these instructions and code changes.