RC calibrated : Detected 0 radio channels. To operate PX4, you need at least 5 channels.

[yinjiajie]

I use PX4 DurandalV1, version is PX4 Pro Stable Release v1.11.3. the RC can be calibrated if selecting Generic Quadcopter airframe, but RC can not be calibrated if selecting Blade 130X airframe, display "Detected 0 radio channels. To operate PX4, you need at least 5 channels".

[bresch]

Do you have a RC receiver connected? To SBUS? Spektrum? How did connect it?

[yinjiajie]

yes, i have a RC receiver connected to SBUS. If selecting Generic Quadcopter airframe, it is OK. Then, i just modify airframe to Blade 130X, it is not OK.

[yinjiajie]

[taileron]

Some mixers that use a little more memory, especially when PWM output limits have been extended above 2000uS, have sometimes blocked RC detection. At the moment, I only have this under control by loading the mixer later in extras.txt.

[taileron]

with the current master changing src/modules/px4iofirmware/mixer.h mixer lenght from 330 to 430 now allows to load all mixers successfully without blocking serial rc anymore

[dagar]

@taileron can you check free memory (px4io status) while using a mixer and RC? Let's make that change right away if it fits.

[taileron]

how much memory should be left free in the IO? Status is from PixFalcon where so far serial RC was always blocked when I wanted to load my Vectored Thrust Mixer with 5 arguments and mixer length = 530. With ml=430 the mixer didn't´t load or loaded not completely. At the moment it works all without problems.

px4io_status_s timestamp: 106446396 (0.508539 seconds ago) voltage_v: 0.0000 rssi_v: 1.1850 free_memory_bytes: 712 actuators: [0, 0, 0, 9808, 4841, -5769, 0, 0] servos: [1000, 1000, 1000, 2000, 1985, 1030, 1500, 1500] raw_inputs: [1500, 1501, 998, 1500, 1697, 1220, 1945, 2096, 1057, 1898, 1762, 1500, 1761, 1500, 0, 0, 0, 0] status_outputs_armed: True status_override: False status_rc_ok: True status_rc_ppm: False status_rc_dsm: True status_rc_sbus: False status_fmu_ok: True status_raw_pwm: False status_mixer_ok: True status_arm_sync: True status_init_ok: True status_failsafe: False status_safety_off: True status_fmu_initialized: True status_rc_st24: False status_rc_sumd: False alarm_vbatt_low: False alarm_temperature: False alarm_servo_current: False alarm_acc_current: False alarm_fmu_lost: True alarm_rc_lost: True alarm_pwm_error: False alarm_vservo_fault: False arming_io_arm_ok: True arming_fmu_armed: False arming_fmu_prearmed: True arming_manual_override_ok: False arming_failsafe_custom: True arming_inair_restart_ok: True arming_always_pwm_enable: True arming_rc_handling_disabled: False arming_lockdown: False arming_force_failsafe: False arming_termination_failsafe: False arming_override_immediate: True

reversed outputs: [____] trims: r: 0.0000 p: 0.0000 y: 0.0000 14 raw R/C inputs 1500 1501 998 1500 1697 1220 1945 2096 1057 1898 1762 1500 1761 1500 R/C flags: 0x001c DSM11 MAPPING_OK mapped R/C inputs 0x00af 0:0 1:0 2:0 3:0 5:-10000 7:0 ADC inputs 0 1743 features 0x0008 RSSI_ADC rates 0x000f default 50 alt 400 sbus 72 debuglevel 0 controls 0: -224 59 2 0 0 0 0 0 controls 1: 0 0 0 0 0 0 0 0 controls 2: 0 0 0 0 0 0 0 0 controls 3: 0 0 0 0 0 -10000 0 0 input 0 min 915 center 1500 max 2082 deadzone 10 assigned 0 options 0x0003 ENABLED REVERSED input 1 min 900 center 1500 max 2096 deadzone 10 assigned 1 options 0x0001 ENABLED input 2 min 1031 center 1031 max 2101 deadzone 10 assigned 3 options 0x0001 ENABLED input 3 min 908 center 1500 max 2094 deadzone 10 assigned 2 options 0x0003 ENABLED REVERSED input 4 min 1000 center 1525 max 2000 deadzone 10 assigned 255 options 0x0000 input 5 min 1039 center 1500 max 1961 deadzone 10 assigned 255 options 0x0000 input 6 min 899 center 1500 max 1921 deadzone 10 assigned 5 options 0x0003 ENABLED REVERSED input 7 min 800 center 1500 max 2200 deadzone 10 assigned 255 options 0x0000 input 8 min 1000 center 1500 max 2000 deadzone 0 assigned 255 options 0x0000 input 9 min 1000 center 1500 max 2000 deadzone 0 assigned 255 options 0x0002 REVERSED input 10 min 1000 center 1500 max 2000 deadzone 0 assigned 255 options 0x0002 REVERSED input 11 min 1099 center 1500 max 1901 deadzone 0 assigned 7 options 0x0001 ENABLED input 12 min 1099 center 1500 max 1901 deadzone 0 assigned 255 options 0x0000 input 13 min 1099 center 1500 max 1901 deadzone 0 assigned 255 options 0x0000 input 14 min 1099 center 1500 max 1901 deadzone 0 assigned 255 options 0x0000 input 15 min 1099 center 1500 max 1901 deadzone 0 assigned 255 options 0x0000 input 16 min 1000 center 1500 max 2000 deadzone 0 assigned 255 options 0x0000 input 17 min 1000 center 1500 max 2000 deadzone 0 assigned 255 options 0x0000 failsafe 0 0 0 2000 1985 1030 1500 1500 disarmed values 1000 1000 1000 2000 1985 1030 1500 1500 nsh>

[XinLong-Li]

I think you may need to check some parament in QGroundControl, the first one is RC_INPUT_PROTO