A debian image with linux RT kernel, OpenCV345, ROS, and LinuxCNC
#5A - STM32L496 based module for free development
#3A - GPS assisted tracking device with GSM connectivity and a lot of
Multiplatform Ham Radio APRS and Mapping Program
STM32F4 APRS Tracker/Digipeater/IGate/Monitor
aprsdigi, a linux amateur radio APRS digipeater
Telecar 9 radio open source firmware
Some stuff to make AX.25 actually work across your networks.