RSSI
RSSI (Received Signal Strength Indicator) shows the quality of your radio link. OrniFlight can source RSSI from analog input, serial receiver data, or protocol RSSI.
RSSI Sources
| Source | Connection | Configuration |
|---|---|---|
| Serial Protocol | None (over serial RX wire) | CRSF, GHST — automatic |
| AUX Channel | None (TX sends RSSI as channel) | set rssi_channel = 8 |
| Analog ADC | RSSI pad on FC → Receiver RSSI out | set rssi_adc_channel = 1 |
Configuration
Serial RSSI (CRSF/GHST/SBUS)
set rssi_src_frame_errors = OFF
set rssi_scale = 100
set rssi_offset = 0
RSSI is transmitted automatically by serial protocols — no extra wiring needed.
Analog RSSI
Connect receiver RSSI output → RSSI pad on flight controller:
set rssi_adc_channel = 1 # Use ADC channel 1
set rssi_scale = 100 # Scale to 0-100%
set rssi_offset = 0
AUX Channel RSSI
Configure your transmitter to send RSSI on a specific channel, then:
set rssi_channel = 12 # Aux channel number
set rssi_scale = 100
set rssi_offset = 0
Display
RSSI is shown in the OSD and can be transmitted via telemetry to your radio. Configure warning thresholds:
set osd_rssi_alarm = 20 # Warning at 20% RSSI
Ornithopter Range
For ornithopters, RSSI is critical — flapping wings create dynamic RF interference patterns. Monitor RSSI during initial test flights to verify reliable link performance at all wing positions.