Alan Johnston's repositories
CubeSatSim
CubeSatSim, the AMSAT CubeSat Simulator
ambasat1-flight-software
Flight software (onboard and ground) for the AmbaSat-1 picosat
Adafruit_Si5351_Library
Driver for Adafruit's Si5351 Clockgen Breakout
Arduino-APRS
Create simple APRS modulator using Arduino UNO
awulff-pico-playground
RPi Pico Tests & Samples
direwolf
Dire Wolf is a software "soundcard" AX.25 packet modem/TNC and APRS encoder/decoder. It can be used stand-alone to observe APRS traffic, as a tracker, digipeater, APRStt gateway, or Internet Gateway (IGate). For more information, look at the bottom 1/4 of this page and in https://github.com/wb2osz/direwolf/blob/dev/doc/README.md
Duino-hacks
Tiny Arduino (and related) hacks not worth of their own repository.
esp32-pwm-audio
Use pwm to play audio on esp32/esp32s2
funcubeLib
decodes/encodes data from/for the FUNcube family of satellites, detects and tracks them too.
JPEGDecoder
JPEG Decoder for Arduino
pi-power-button
Scripts useful for the Pi power button
pico-pwm-audio
Raspberry Pi Pico PWM Audio Project
PiFmRds
FM-RDS transmitter using the Raspberry Pi's PWM
satnogs-kaitai-structs
SatNOGS kaitai structs for telemetry parsing
SparkFun-Eagle-Libraries
SparkFun's Public Eagle PCB Footprints