ArduPlane, ArduCopter, ArduRover, ArduSub source
https://ardupilot.org/ running on something like a pixhawk with https://ardupilot.org/dev/docs/apsync-intro.html running on a companion computer with wifi capabilities like a raspberry pi
NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.
What made drones possible and so cheap now and not say, 20 years earlier?
1 project | reddit.com/r/AskReddit | 15 Nov 2021
Small Agro Spray Drone
1 project | reddit.com/r/diydrones | 3 Nov 2021
Can you connect a controller like Raspberry on any Cheap Toy Drone (Flight Controller), so that the programmed Raspberry pi can run the drone? [Question for Electronics part]
1 project | reddit.com/r/AskElectronics | 29 Sep 2021
DJI SBUS baud fast protocol on Ardupilot?
1 project | reddit.com/r/ardupilot | 23 Sep 2021
URGENTLY NEED ADVICES( FOR ARDUPILOT 2.8
1 project | reddit.com/r/diydrones | 16 Sep 2021