Feature:
APM has a companion OSD board called MinimOSD. It reads all the MAVLink data in the APM telemetry stream and overlays it on the video stream if you are using an on-board camera and wireless video transmitter. This is useful if you are flying in First Person View (FPV) mode or do not want to use a laptop at the field to see your telemetry data in the Mission Planner.
Note:
You cannot connect the OSD when your APM 2 is also connected via USB (they share the same port). Make sure you disconnect your USB cable from the APM 2 board before attempting to use the OSD.
Compatible with:
APM2.5
APM2.6
Pixhawk PX4