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IntoFPV Forum › General Discussion › Beginner Questions v
gps rescue why it is flyying not to home ?

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gps rescue why it is flyying not to home ?
d00lar Offline
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#1
05-May-2021, 07:16 AM
hi
im still learning
i wanted to test gps rescue
i waited till gps fix
i flown away 250m
pressed button
and it was not going into my way at all
it flown up a bit - normal
and then it was going not into my direction at all - it was going left from home position

what can be a problem ? 

thanks
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MelBourbon Offline
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#2
05-May-2021, 07:53 AM
Do you have enabled "direction to home" in your OSD? If yes was the arrow showing in the right direction as you started to fly away? How many satellites did you had at start where the home point was set?
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d00lar Offline
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#3
05-May-2021, 10:32 AM
yes i have direction to home and while i was flyying myself direction was ok
i do not remember how it was after enabled gps rescue

on homepoint set i had 8 satelites
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MelBourbon Offline
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#4
05-May-2021, 11:06 AM
Are you using betaflight? Can you share your settings? Maybe a "diff" or "dump".
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d00lar Offline
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#5
05-May-2021, 11:37 AM
Code:
# 

# diff all

# version
# Betaflight / STM32F7X2 (S7X2) 4.2.8 Feb 15 2021 / 12:10:35 (101738d8e) MSP API: 1.43
# config: manufacturer_id: TMTR, board_name: TMOTORF7, version: e02dd6f2, date: 2020-11-04T11:31:26Z

# start the command batch
batch start

# reset configuration to default settings
defaults nosave

board_name TMOTORF7
manufacturer_id TMTR
mcu_id 003a00283056500f20383447
signature 

# name: d00lars

# feature
feature -RX_PARALLEL_PWM
feature RX_SERIAL
feature GPS
feature TELEMETRY

# map
map TAER1234

# serial
serial 1 1 115200 57600 0 115200
serial 3 2 115200 115200 0 115200
serial 4 64 115200 57600 0 115200

# aux
aux 0 0 0 1875 2100 0 0
aux 1 1 2 900 1125 0 0
aux 2 2 2 1375 1625 0 0
aux 3 6 2 1875 2100 0 0
aux 4 46 3 1875 2100 0 0
aux 5 13 1 1875 2100 0 0
aux 6 35 3 1300 1700 0 0

# master
set gyro_lowpass2_hz = 275
set dyn_notch_width_percent = 0
set dyn_notch_q = 250
set dyn_notch_min_hz = 70
set dyn_notch_max_hz = 200
set dyn_lpf_gyro_min_hz = 220
set dyn_lpf_gyro_max_hz = 550
set acc_calibration = 22,-33,-37,1
set baro_hardware = NONE
set min_check = 1010
set max_check = 1995
set serialrx_provider = CRSF
set blackbox_device = NONE
set dshot_idle_value = 250
set dshot_bidir = ON
set motor_pwm_protocol = DSHOT600
set failsafe_procedure = GPS-RESCUE
set small_angle = 180
set gps_sbas_mode = EGNOS
set gps_rescue_angle = 45
set gps_rescue_initial_alt = 35
set gps_rescue_throttle_min = 1180
set gps_rescue_ascend_rate = 400
set gps_rescue_throttle_hover = 1300
set gps_rescue_sanity_checks = RESCUE_SANITY_FS_ONLY
set gps_rescue_min_sats = 7
set gps_rescue_allow_arming_without_fix = ON
set deadband = 3
set yaw_deadband = 2
set osd_vbat_pos = 14824
set osd_rssi_pos = 14336
set osd_link_quality_pos = 14368
set osd_tim_1_pos = 2056
set osd_current_pos = 14821
set osd_mah_drawn_pos = 2543
set osd_gps_speed_pos = 14339
set osd_gps_lon_pos = 8672
set osd_gps_lat_pos = 8689
set osd_gps_sats_pos = 14362
set osd_home_dir_pos = 14361
set osd_home_dist_pos = 14357
set osd_flight_dist_pos = 14352
set osd_warnings_pos = 14760
set osd_avg_cell_voltage_pos = 14827
set osd_stat_max_dist = ON
set name = d00lars

profile 0

# profile 0
set dyn_lpf_dterm_min_hz = 77
set dyn_lpf_dterm_max_hz = 187
set dterm_lowpass2_hz = 165

profile 1

profile 2

# restore original profile selection
profile 0

rateprofile 0

# rateprofile 0
set throttle_limit_type = SCALE
set throttle_limit_percent = 60

rateprofile 1

rateprofile 2

rateprofile 3

rateprofile 4

rateprofile 5

# restore original rateprofile selection
rateprofile 0

# save configuration
save
# 
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MelBourbon Offline
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#6
05-May-2021, 11:47 AM (This post was last modified: 05-May-2021, 11:56 AM by MelBourbon.)
What GPS are you using? Can you send me what you get if you add "get gps" into the CLI?

Are you sure you have armed the quad only after there was a GPS fix? Because you have set 'gps_rescue_allow_arming_without_fix' to ON which allows you to arm without having a fix. So if you arm without a fix the home point may be not set correctly. I would recommend to set this to off and try again.
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d00lar Offline
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#7
05-May-2021, 12:03 PM
yes im shure i always wait for beep Wink without it when i do gps rescue it should do nothing right?

i used bn220
but today i just changed it to
Matek Systems M8Q-5883 72
it arrived like 5days ago but i didnt had time to change it
will test today again with new one

ps could it be the wind? that it was not flying right direction ? it was prety strong wind yesturday but i had no problems on 'manual fly'
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MelBourbon Offline
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#8
05-May-2021, 12:09 PM (This post was last modified: 05-May-2021, 12:10 PM by MelBourbon.)
Could be the wind. Then you should wait longer and see if the copter corrects and really comes back to you.

But there is a gps option which, if set to on, sets the home point only once at the first arm after a lipo is added. Thats the reason why I wanted to be sure you had a fix at the FIRST arm. Because if this option is set it may be the case that, if you only shortly arm for testing purpose, disarm again to wait for the fix and arm again, the home point is set based on the first arm where the gps position may be not appropriate based on missing satellites. But I'm not sure if this is possible at all and if betaflight will set a home point at all without a fix.
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d00lar Offline
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#9
05-May-2021, 12:24 PM (This post was last modified: 05-May-2021, 12:24 PM by d00lar.)
i waited like 45-60s and it was not getting closer so i took control could it take longer?

i known that i never disarm if im not in front of it Wink
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MelBourbon Offline
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#10
05-May-2021, 12:37 PM
In all of my cases the quad directly turned into my direction within seconds. So I don't think you need to wait longer. With that I currently don't have any glue except for checking the setting above and maybe try on a day without or less wind.
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d00lar Offline
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#11
05-May-2021, 03:34 PM
ok now when i have gps unit with magnetometer it is even worse i arrow is facing wrong / oposite to home direction
what may be the issue ?
i saw that some pepole have that issue when wrong font etc. im using dji system so not loaded any fonts etc ;/
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d00lar Offline
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#12
05-May-2021, 07:52 PM (This post was last modified: 05-May-2021, 07:58 PM by d00lar.)
i did calibration on magnetometer
i have flown 3times now 3arms and disarm
one of them was ok - arrow ok and gps rescue working... (second)
2 as prevouusly;/
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d00lar Offline
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#13
12-May-2021, 08:13 AM
ok i disabled magnetometer and now with mateksys gps without magnetometer ewerything works fine Wink
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