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Help: Quad won't take off

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Hello,
I have an iFlight Chimera7 (SucceX F7 twing FC). For some reason, the quad shuts down upon liftoff (see video). Initially, I thought it had to do with the props, then the direction of the motors (yeah, I know . . . I just wanted to say I've tried everything!).


My last resort was to flash the FC and start over. To add insult to injury, I couldn't get it to flash. I started it with the boot button pressed. No go. I typed "bl" in BF and it restarted, still no go. I keep getting this error: No response from the bootloader, programming failed. Get it on my mac and my PC.

I then recovered the FC from a previous configuration (this is actually my 2nd Chimera7 - we won't talk about what happened to the first:mad:). No go.

OK, so I'm totally lost, thinking I need to send this back. But I know it has to be something simple. Any help anyone can offer would be much appreciated.

Thanks
 

droneguy

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Hey Obsidian,

There definitely seems to be an issue with your betaflight. Can you post the output of diff all from your CLI?
 
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Hey Obsidian,

There definitely seems to be an issue with your betaflight. Can you post the output of diff all from your CLI?
Thanks for taking a look at it, I certainly don't know what any of this means . . . guess I've got some studying to do!

# diff all
###WARNING: NO CUSTOM DEFAULTS FOUND###

# version
# Betaflight / STM32F7X2 (S7X2) 4.2.0 Jun 14 2020 / 03:05:26 (8f2d21460) MSP API: 1.43
###ERROR: diff: NO CONFIG FOUND###
# start the command batch
batch start

# reset configuration to default settings
defaults nosave

board_name IFLIGHT_F722_TWING
manufacturer_id IFRC
mcu_id 002a00094e53500f2030304e
signature

# name: Nalani

# resources
resource BEEPER 1 C15
resource MOTOR 1 C08
resource MOTOR 2 C06
resource MOTOR 3 C09
resource MOTOR 4 C07
resource MOTOR 5 B06
resource MOTOR 6 B07
resource MOTOR 7 B01
resource MOTOR 8 B00
resource PPM 1 A03
resource LED_STRIP 1 A01
resource SERIAL_TX 1 A09
resource SERIAL_TX 2 A02
resource SERIAL_TX 3 B10
resource SERIAL_TX 4 C10
resource SERIAL_TX 5 C12
resource SERIAL_RX 1 A10
resource SERIAL_RX 2 A03
resource SERIAL_RX 3 B11
resource SERIAL_RX 4 C11
resource SERIAL_RX 5 D02
resource I2C_SCL 2 B10
resource I2C_SDA 2 B11
resource LED 1 C04
resource SPI_SCK 1 A05
resource SPI_SCK 2 B13
resource SPI_SCK 3 B03
resource SPI_MISO 1 A06
resource SPI_MISO 2 B14
resource SPI_MISO 3 B04
resource SPI_MOSI 1 A07
resource SPI_MOSI 2 B15
resource SPI_MOSI 3 B05
resource CAMERA_CONTROL 1 A00
resource ADC_BATT 1 C01
resource ADC_RSSI 1 C00
resource ADC_CURR 1 C02
resource PINIO 1 C13
resource PINIO 2 C14
resource PINIO 3 B08
resource FLASH_CS 1 B09
resource OSD_CS 1 B12
resource GYRO_EXTI 1 A08
resource GYRO_EXTI 2 B02
resource GYRO_CS 1 A15
resource GYRO_CS 2 C03

# timer
timer A00 AF2
# pin A00: TIM5 CH1 (AF2)
timer A03 AF3
# pin A03: TIM9 CH2 (AF3)
timer C08 AF3
# pin C08: TIM8 CH3 (AF3)
timer C06 AF3
# pin C06: TIM8 CH1 (AF3)
timer C09 AF3
# pin C09: TIM8 CH4 (AF3)
timer C07 AF3
# pin C07: TIM8 CH2 (AF3)
timer B06 AF2
# pin B06: TIM4 CH1 (AF2)
timer B07 AF2
# pin B07: TIM4 CH2 (AF2)
timer B01 AF2
# pin B01: TIM3 CH4 (AF2)
timer B00 AF2
# pin B00: TIM3 CH3 (AF2)
timer A01 AF1
# pin A01: TIM2 CH2 (AF1)

# dma
dma ADC 3 0
# ADC 3: DMA2 Stream 0 Channel 2
dma pin A00 0
# pin A00: DMA1 Stream 2 Channel 6
dma pin C08 1
# pin C08: DMA2 Stream 4 Channel 7
dma pin C06 0
# pin C06: DMA2 Stream 2 Channel 0
dma pin C09 0
# pin C09: DMA2 Stream 7 Channel 7
dma pin C07 1
# pin C07: DMA2 Stream 3 Channel 7
dma pin B06 0
# pin B06: DMA1 Stream 0 Channel 2
dma pin B07 0
# pin B07: DMA1 Stream 3 Channel 2
dma pin B01 0
# pin B01: DMA1 Stream 2 Channel 5
dma pin B00 0
# pin B00: DMA1 Stream 7 Channel 5
dma pin A01 0
# pin A01: DMA1 Stream 6 Channel 3

# feature
feature -RX_PARALLEL_PWM
feature RX_SERIAL
feature GPS
feature TELEMETRY
feature LED_STRIP
feature OSD

# beacon
beacon RX_LOST
beacon RX_SET

# serial
serial 0 64 115200 57600 0 115200
serial 1 1 115200 57600 0 115200
serial 3 2 115200 57600 0 115200

# led
led 0 5,0::CB:12

# aux
aux 0 0 0 1700 2100 0 0
aux 1 1 1 1700 2100 0 0
aux 2 46 2 1700 2100 0 0
aux 3 13 3 1700 2100 0 0
aux 4 35 3 900 1300 0 0

# rxfail
rxfail 6 s 1500

# master
set gyro_lowpass2_hz = 375
set gyro_to_use = BOTH
set dyn_notch_width_percent = 0
set dyn_notch_q = 250
set dyn_notch_min_hz = 70
set dyn_notch_max_hz = 350
set dyn_lpf_gyro_min_hz = 300
set dyn_lpf_gyro_max_hz = 750
set acc_calibration = 20,-28,-10,1
set mag_bustype = I2C
set mag_i2c_device = 2
set mag_hardware = NONE
set baro_bustype = I2C
set baro_i2c_device = 2
set serialrx_provider = SBUS
set adc_device = 3
set blackbox_p_ratio = 16
set blackbox_device = SPIFLASH
set dshot_burst = ON
set motor_pwm_protocol = DSHOT600
set failsafe_procedure = GPS-RESCUE
set current_meter = ADC
set battery_meter = ADC
set vbat_scale = 111
set ibata_scale = 100
set beeper_inversion = ON
set beeper_od = OFF
set beeper_dshot_beacon_tone = 4
set gps_provider = UBLOX
set gps_sbas_mode = AUTO
set gps_auto_baud = ON
set gps_rescue_min_sats = 6
set osd_units = IMPERIAL
set osd_warn_link_quality = ON
set osd_vbat_pos = 455
set osd_rssi_pos = 344
set osd_link_quality_pos = 380
set osd_rssi_dbm_pos = 345
set osd_tim_1_pos = 2488
set osd_tim_2_pos = 322
set osd_flymode_pos = 2400
set osd_throttle_pos = 441
set osd_vtx_channel_pos = 2517
set osd_current_pos = 384
set osd_mah_drawn_pos = 352
set osd_craft_name_pos = 2368
set osd_display_name_pos = 490
set osd_gps_speed_pos = 2304
set osd_gps_lon_pos = 256
set osd_gps_lat_pos = 288
set osd_gps_sats_pos = 2458
set osd_home_dir_pos = 2342
set osd_home_dist_pos = 2336
set osd_flight_dist_pos = 2240
set osd_altitude_pos = 2272
set osd_pidrate_profile_pos = 407
set osd_warnings_pos = 14828
set osd_avg_cell_voltage_pos = 320
set osd_disarmed_pos = 2432
set osd_stat_max_alt = ON
set osd_stat_total_flights = ON
set osd_stat_total_time = ON
set osd_stat_total_dist = ON
set max7456_spi_bus = 2
set dashboard_i2c_bus = 2
set pinio_config = 129,1,1,1
set pinio_box = 0,255,255,255
set flash_spi_bus = 3
set gyro_1_bustype = SPI
set gyro_1_spibus = 1
set gyro_2_spibus = 1
set gyro_2_sensor_align = CW90
set gyro_2_align_yaw = 900
set gyro_rpm_notch_q = 800
set name = Nalani

profile 0

# profile 0
set dyn_lpf_dterm_min_hz = 84
set dyn_lpf_dterm_max_hz = 204
set dyn_lpf_dterm_curve_expo = 6
set dterm_lowpass2_hz = 180
set vbat_sag_compensation = 100
set anti_gravity_gain = 8000
set feedforward_transition = 40
set iterm_relax_cutoff = 7
set yaw_lowpass_hz = 70
set throttle_boost_cutoff = 10
set f_pitch = 125
set f_roll = 119
set f_yaw = 119
set d_min_roll = 33
set d_min_pitch = 36
set ff_interpolate_sp = AVERAGED_3
set ff_spike_limit = 55
set ff_smooth_factor = 40

profile 1

profile 2

# restore original profile selection
profile 0

rateprofile 0

# rateprofile 0
set roll_rc_rate = 90
set pitch_rc_rate = 90
set yaw_rc_rate = 90

rateprofile 1

rateprofile 2

rateprofile 3

rateprofile 4

rateprofile 5

# restore original rateprofile selection
rateprofile 0

# save configuration
save
 

droneguy

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Ok... should be simple. You seem to have lost your betaflight config. It's set to defaults which means there are many settings that don't match your quads requirements.

Here is a link to the factory configs for the Chimera 7. HD - Google Drive

There is a different config depending on whether you have 1300KV or 1800KV motors. Download the correct one. It's the SBUS version in your KV.

Once you have downloaded it, open it in notepad on your computer then do a select all (CTRL+A) and copy then paste it into the CLI prompt in Betaflight , press enter. It will add the config to your quad. Then type save and press enter to save it.

The factory dump will restore it to the iFlight delivered config. This gets you back to a working quad, but you still need to go into Betaflight in the modes tab and check your aux channels to make sure they are correct. The default config from iFlight only uses two switches, switch a for arm and switch b for angle mode. I see from your dump that you went and changed your craft name and setup some switches.

Sounds like you are very new to these type of drones. There are many other important steps to preparing your quad for flight including testing your failsafe, setting up and testing your return to home, etc. I'd like to know what happened to your first quad, so we can help you avoid the same tragic fate with this one. A 7in chimera is no joke. Having a proper setup and knowing how to fly it is super important for your safety and the safety of others.

We are all here to help you.
 
Last edited:
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Ok... should be simple. You seem to have lost your betaflight config. It's set to defaults which means there are many settings that don't match your quads requirements.

Here is a link to the factory configs for the Chimera 7. HD - Google Drive

There is a different config depending on whether you have 1300KV or 1800KV motors. Download the correct one. It's the SBUS version in your KV.

Once you have downloaded it, open it in notepad on your computer then do a select all (CTRL+A) and copy then paste it into the CLI prompt in Betaflight , press enter. It will add the config to your quad. Then type save and press enter to save it.

The factory dump will restore it to the iFlight delivered config. This gets you back to a working quad, but you still need to go into Betaflight in the modes tab and check your aux channels to make sure they are correct. The default config from iFlight only uses two switches, switch a for arm and switch b for angle mode. I see from your dump that you went and changed your craft name and setup some switches.

Sounds like you are very new to these type of drones. There are many other important steps to preparing your quad for flight including testing your failsafe, setting up and testing your return to home, etc. I'd like to know what happened to your first quad, so we can help you avoid the same tragic fate with this one. A 7in chimera is no joke. Having a proper setup and knowing how to fly it is super important for your safety and the safety of others.

We are all here to help you.
Awesome, I will try this later this evening.

My first Chimera7 was shot down by an angry backwoods man. Seriously. I'd show the video, but the case is still open. I built that one from the ground up. It worked perfectly. I spent some time tuning it and it was nice steady and smooth. Anyway, the guy got arrested for shooting it. I was not over his property or anything, he just thought it was funny to shoot down some hobbyists' birds. There are a lot of guys my age who fly quads, drones, model aircraft, and RC vehicles in a school field. The school has actually designated it for that when school is not in session. He decided to shoot down an RC helicopter just before he shot my quad. Of course, no one dared approach him with his shotgun in hand. I'm telling you, I couldn't make this @#$%^ up. He's in trouble for also bringing and discharging a weapon on school property as well.

I'm a year into the hobby, so yes, still a noob. I've built several in this time and again, yes still learning.

I bought this one from RaceDayQuads (I prefer to build my own, it is a lot of fun) - before I changed anything, it was doing this behavior. That's when I started fiddling with the settings, restoring from my previous setup, etc.

Thanks for your time.
 

droneguy

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Crazy!!! that's a crappy and scary way to lose a quad...
 
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Ok... should be simple. You seem to have lost your betaflight config. It's set to defaults which means there are many settings that don't match your quads requirements.

Here is a link to the factory configs for the Chimera 7. HD - Google Drive

There is a different config depending on whether you have 1300KV or 1800KV motors. Download the correct one. It's the SBUS version in your KV.

Once you have downloaded it, open it in notepad on your computer then do a select all (CTRL+A) and copy then paste it into the CLI prompt in Betaflight , press enter. It will add the config to your quad. Then type save and press enter to save it.

The factory dump will restore it to the iFlight delivered config. This gets you back to a working quad, but you still need to go into Betaflight in the modes tab and check your aux channels to make sure they are correct. The default config from iFlight only uses two switches, switch a for arm and switch b for angle mode. I see from your dump that you went and changed your craft name and setup some switches.

Sounds like you are very new to these type of drones. There are many other important steps to preparing your quad for flight including testing your failsafe, setting up and testing your return to home, etc. I'd like to know what happened to your first quad, so we can help you avoid the same tragic fate with this one. A 7in chimera is no joke. Having a proper setup and knowing how to fly it is super important for your safety and the safety of others.

We are all here to help you.
 

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