I wanted to ask some questions about the connections to be made with Pixhawk 2.4.8 (sorry, but I’m new).
1- If for example I have a remote control with 10 channels and a receiver with 6 channels, to that
I thought I understood that if I use the S-BUS port I can use them all, how can I manage the remaining channels?
For example (firefly 6s) how do I connect a gimbal to channel 7, or an action cam with photo control remotely to channel 8?
2- If I have a receiver with integrated telemetry as FRSKY X8R, do I have to insert the cable on TEL.2 or on the 4/5 serial port?
Or should I buy a separate telemetry card to put on TEL.1? Can the OSD put it in both cases?
First, make sure you bind your X8R in Mode 4 (D16) by putting a jumper between signal pins 1 & 2 and 3 & 4. Once it binds, power down, remove jumpers then power back up. This will now give you 16 channels to use; 1-8 “virtual” channels that the Pixhawk can use and 9-16 “physical” channels on your X8R that you can directly control servos. So in your case, you plug your gimbal signal wire to Port #1 of the X8R and program your Tx Mixer to Channel 9.
Usually TELEM1 unless you have a Telemetry radio connected there, then use TELEM2.
From the looks of it in the photo, you have a Craft & Theory cable which will work for ArduPilot. But if you’re using PX4 stack, then read up on how to use Yaapu LUA for a very comprehensive telemetry screen on your Tx.