The R8 receiver is the first receiver that can directly transmit the PIX and PX4 flight control data to your R/C controller.  This can be used to display the flight control data directly on your radio.  Apart from this is it just like any other 8 channel SBUS/PWM R/C receiver.  Bottom line if you are looking for an R/C link to your Pixhawk drone, this is the receiver you should consider.

Key Features

• More channels: 1-8 channels from traditional channel output, 1-16 channels from SBUS port
• RSSI output: analog voltage output (03.3V)
• Two-way full duplex transmission (Telemetry)
• Weight: 10g
• With RSSI output: analog voltage output (03.3V)

Specification

• Number of channels: 8ch (PWM) / 16ch (SBUS)
• RSSI (Signal Strength Indication) output: PWM
• Operating voltage range: 4.0~8.4V
• Operating current range: 100mA@5V
• Effective distance: full distance (>2.0km)
• Compatibility:
  • D8 mode
  • D16 mode

Resources

• R8 manual
• Yaapu Telemetry Script
• Ardupilot WIki on telemetry setup

Binding

1. Press the bind button on the receiver, red/green LED solid on

2. On radio side, select Frsky D16 protocol (T12/T16: Multi Frsky D16);

3.When Red LED is flashing, binding succeeded.

4. After binding, withdraw the binding mode and power up the receiver again.  Green Led turns solid on.

LED Colours and meaning

• the green light is always on: the signal is good.
• the green light is blinking: the signal is bad.
• the red light is always on: the signal is lost.