Contents
Introduction
If you’ve got a pixhawk or compatible flight controller, you may be interested in using it with Ultimate LRS for a high performance, full telemetry and 16 channels long range system.
Pixhawk specific serial port configuration
In Mission Planner, you’ll configure the serial port to use for telemetry.
Example : If you choose ‘TELEM1‘, in Mission Planner change the parameter ‘SERIAL1‘ to 19, meaning 19200 bauds.
Remark : this is different from APM users who will be choosing ‘SERIAL1’ for UART0
Connections
RC Control
- PPM out on ULRS Rx to RC Signal input on Pixhawk
- GND out on ULRS Rx to RCin GND on Pixhawk
Telemetry
- Tx on ULRS Receiver to Rx in on TELEM1
- Rx on ULRS Receiver to Tx in on TELEM1
- GND on ULRS Rx to GND in on TELEM1
Power
- ULRS Receiver powered directly from battery (preferred) or 5V regulator
- Don’t power ULRS from the Pixhawk RCin Vcc
- Complete information about powering Pixhawk can be found here.
Pixhawk pinout
Pixhawk Power connector pinout
More details here.
Pixhawk telemetry connector pinout
More details here.
Remark : Pixhawk uses 3.3V signal on its telemetry port.
Resources