To pass the RSSI (Received Signal Strength Indication) from an FrSky X8R RX onto the Pixhawk it’s a lot simpler than I originally thought.
All you need is a Futaba servo plug-in cable that is long enough to go from your X8R to the Pixhawk.
- Plug in the one end on the SB analog input pins of the Pixhawk and the other end on the RSSI port of the X8R
- Connect the Pixhawk on your PC, open Mission Planner in the Full Parameter List and find the RSSI options PIN and RANGE to set the values below:
- RSSI_PIN: 103
- RSSI_RANGE: 3.3 (as per the instructions the RSSI voltage range is 0-3.3V)
- Next you just need to go in the Flight Data of Mission Planner, right click on the HUD > User Items and tick the rxrssi which will put the RSSI value in the HUD.
- If you need the RSSI value on the minimosd and it’s not already reported you will need to add this in by re-programming the minimosd