I have a 3DR radio, and a Minimosd connected to the two telem ports on my pixhawk. I want to add my raspberry pi 2 to the mix, and want to know how to connect all three at the same time. Would I have to route one through the raspberry Pi 2, or is there a way to split one of the telem ports to basically have three telem ports.
Thanks for the info.
Mike
Replies
Hi Mike,
Going to do the same with ODroid C1 board. Wiring manual for PixHawk recommends to use separate telemetry ports for OSD and 3DR radio, but I split Telem1 port with y-cable packaged with my MinimOSD. It missed TX line from MinimOSD to PixHawk and this way MinimOSD unable to request MAVLink streams, so I just set appropriate params to meet MinimOSD demands:
SR1_EXT_STAT = 2
SR1_EXTRA1 = 6
SR1_EXTRA2 = 6
SR1_EXTRA3 = 2
SR1_PARAMS = 0
SR1_POSITION = 2
SR1_RAW_CTRL = 2
SR1_RAW_SENS = 1
SR1_RAW_CHAN = 2
So far it works ok and I have Telem2 free for MAVLink communication with ODroid.
Hope it helps,
Dmitry