The CubeSat Simulator https://github.com/alanbjohnston/CubeSatSim/wiki is a low cost satellite emulator that run on solar panels and batteries, transmits UHF radio telemetry, has a 3D printed frame, and can be extended by additional sensors and modules. This project is sponsored by the not-for-profit Radio Amateur Satellite Corporation, AMSAT®.
See the Wiki Software Install page for more details: https://github.com/alanbjohnston/CubeSatSim/wiki/Software-Install. To build and run the software on a Raspberry Pi 3B, 3B+, or Pi Zero W:
git clone http://github.com/alanbjohnston/CubeSatSim.git
cd CubeSatSim
Edit the afsk/main.c file to set your amateur radio callsign, then
make rebuild
To hear CW telemetry (Morse code), tune your radio or SDR to 435.297 MHz and enter:
./radiocw
To stop, Ctrl-C. To hear AFSK telemetry (X.25 data), your radio or SDR to 440.389 MHz FM, and you should receive telemetry from the CubeSat Sim:
./radioafsk
This code uses the Brandenburg Tech Digital Transceiver, based on DigitalTxRxRP https://brandenburgtech.wordpress.com/
This repository contains:
- afsk - Code that sends telemetry in 1k2 AFSK X.25 format
- arduino - Sample Arduino sketches to show how payload sensors can be interfaced to CubeSat Simulator
- ax5043 - Source for a library of functions to communicate with the AX5043 and configure the AX5043.
- cw - Code that sends telemetry in CW (Morse code) using AO-7 format
- libs - External libraries
- python - Python code for reading I2C sensors for current and temperature
- spreadsheet - Spreadsheets for decoding and analyzing the Simulator telemetry (see https://github.com/alanbjohnston/CubeSatSim/wiki/Decoding-Telemetry for details)
- wav - Wave audio files of CW or AFSK telemetry for listening or transmitting usng a CubeSat Simulator Lite
- demo.sh - a shell script to run the Simulator on boot using systemd (see https://github.com/alanbjohnston/CubeSatSim/wiki/Software-Install#autoboot-configuration for how to configure the Pi)
See the Wiki for more details https://github.com/alanbjohnston/CubeSatSim/wiki