Detected 0 Radio Channels. To operate PX4, you need at least 5 channels. QGround Control

1

Hello,

I’m new to QGroundControl and I’m trying to set up my PixHawk 2.4.8 for the first time. I have connected my FlySky receiver to the PPM/SBUS port on my PixHawk. I have adjusted the RX settings on my remote transmitter so that its output is in PPM and SBUS. I’m not sure why I’m getting this error:

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I tried getting data from the MavLink console:

NuttShell (NSH) NuttX-11.0.0
nsh> px4io status
protocol 5 hardware 2 bootloader 3 buffer 64B crc 0x6210128859
8 controls 8 actuators 18 R/C inputs 2 analog inputs
px4io_status
timestamp: 1693414 (346.527496 seconds ago)
voltage_v: 0.0040
rssi_v: 1.2830
free_memory_bytes: 1464
pwm: [900, 900, 900, 900, 0, 0, 0, 0]
pwm_disarmed: [900, 900, 900, 900, 0, 0, 0, 0]
pwm_failsafe: [0, 0, 0, 0, 0, 0, 0, 0]
pwm_rate_hz: [50, 50, 50, 50, 50, 50, 50, 50]
raw_inputs: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
status_arm_sync: True
status_failsafe: False
status_fmu_initialized: False
status_fmu_ok: False
status_init_ok: True
status_outputs_armed: False
status_raw_pwm: False
status_rc_ok: False
status_rc_dsm: False
status_rc_ppm: False
status_rc_sbus: False
status_rc_st24: False
status_rc_sumd: False
status_safety_off: True
alarm_pwm_error: False
alarm_rc_lost: True
arming_failsafe_custom: True
arming_fmu_armed: False
arming_fmu_prearmed: False
arming_force_failsafe: False
arming_io_arm_ok: True
arming_lockdown: False
arming_termination_failsafe: False

8 raw R/C inputs 1499 1501 1016 1500 1000 1000 1500 1500
ADC inputs 11 1547
features 0x0004 RSSI_ADC
sbus rate 72
debuglevel 0

INFO [mixer_module] Param prefix: PWM_MAIN
control latency: 0 events, 0us elapsed, 0.00us avg, min 0us max 0us 0.000us rms
INFO [mixer_module] Switched to rate_ctrl work queue
INFO [mixer_module] Mixer loaded: yes
INFO [mixer_module] Driver instance: 0
Channel Configuration:
Channel 0: value: 900, failsafe: 0, disarmed: 900, min: 1075, max: 1950
Channel 1: value: 900, failsafe: 0, disarmed: 900, min: 1075, max: 1950
Channel 2: value: 900, failsafe: 0, disarmed: 900, min: 1075, max: 1950
Channel 3: value: 900, failsafe: 0, disarmed: 900, min: 1075, max: 1950
Channel 4: value: 0, failsafe: 0, disarmed: 0, min: 1000, max: 2000
Channel 5: value: 0, failsafe: 0, disarmed: 0, min: 1000, max: 2000
Channel 6: value: 0, failsafe: 0, disarmed: 0, min: 1000, max: 2000
Channel 7: value: 0, failsafe: 0, disarmed: 0, min: 1000, max: 2000
nsh>

What should I do? How do I resolve this error?

2

I’m also getting a “No gyros found error” when trying to calibrate the gyroscope.

3

Hi, i have the same issue with same board (2.4.8), also it does not detect the Sbus or the PPM frame in the RC_In pin. any one could help here ? thanks in advance