After reading some threads about the very efficient Mavic Mini Motors and finding a cheap source on Aliexpress, i decided to try some builds with them.

This one should give a nice and handy mid-range-time cruiser. Its not build at a total minimum weight, but should be a strong and reliable frame. So far its looking wuite good. first tests seem to be quite promising. Still not sure what will be the final battery for this, so far i tested it from 2S550 over 3S850 to 3S3400LiIon. The Happymodel X1 Board with build-in ELRS and DJI Connector makes it quite simple to wire.

Operation: Broken Arroy - at least thats what its made from

The 2nd set of motors went into an ultra-light frame build (actually i build this one first, but had both ones planed already) similar to other H-Tube Frames i build years ago. As i had some broken 6mm CFK bow arrows lying around i decided to gibe them a try. Well, the frame is very light and looks strong, but the CFK Tube is extruded and not made from 3k fabric, which allows them to twist along the tube. In combination with the very floppy folding props, this produces a lot of vibration which lets the whole frame shake on certain rpms.

In general the frame design itself looks really promising, so i did a 2nd build with the new 7/6mm woven tube that i just got - weight for is seems to be nearly the same, but it still had oscillations due to torsion on the arms. Last option was to add some 1mm CFK spars on the end of the arms which solved the problem. As they only weight 2.5g for both, i made it to fit the AUW just below 250g.

First flight: 37min, 25km traveled

# version
# Betaflight / CRAZYBEEF4SX1280 (HAMO) 4.3.0 Apr 15 2022 / 14:09:06 (8597615a1) MSP API: 1.44

# start the command batch
batch start

# reset configuration to default settings
defaults nosave

board_name CRAZYBEEF4SX1280
mcu_id 001d004d4e56500720363955
signature 

# name: RSSI LOW

# feature
feature GPS

# serial
serial 0 2 115200 9600 0 115200
serial 1 1 115200 57600 0 115200

# beeper
beeper -SYSTEM_INIT

# beacon
beacon RX_LOST
beacon RX_SET

# aux
aux 0 0 0 1700 2100 0 0
aux 1 1 1 900 1300 0 0
aux 2 2 1 1300 1700 0 0
aux 3 46 2 1300 1700 0 0
aux 4 13 3 1700 2100 0 0
aux 5 35 2 1700 2100 0 0

# master
set acc_calibration = -15,-27,72,1
set motor_pwm_protocol = DSHOT300
set failsafe_switch_mode = STAGE2
set failsafe_procedure = GPS-RESCUE
set bat_capacity = 3000
set vbat_min_cell_voltage = 250
set vbat_warning_cell_voltage = 280
set ibata_scale = 472
set small_angle = 180
set gps_auto_config = OFF
set gps_rescue_initial_alt = 40
set gps_rescue_descent_dist = 30
set gps_rescue_ground_speed = 1500
set gps_rescue_throttle_max = 1700
set gps_rescue_ascend_rate = 400
set gps_rescue_throttle_hover = 1500
set gps_rescue_min_sats = 6
set gps_rescue_min_dth = 50
set gps_rescue_allow_arming_without_fix = ON
set gps_rescue_alt_mode = FIXED_ALT
set report_cell_voltage = ON
set osd_warn_rssi = ON
set osd_vbat_pos = 2483
set osd_rssi_pos = 2197
set osd_link_quality_pos = 2104
set osd_rssi_dbm_pos = 2137
set osd_tim_2_pos = 407
set osd_flymode_pos = 2119
set osd_vtx_channel_pos = 65
set osd_crosshairs_pos = 2286
set osd_current_pos = 2439
set osd_mah_drawn_pos = 2471
set osd_craft_name_pos = 2262
set osd_gps_speed_pos = 2183
set osd_gps_lon_pos = 2540
set osd_gps_lat_pos = 2536
set osd_gps_sats_pos = 2228
set osd_home_dir_pos = 2479
set osd_home_dist_pos = 2510
set osd_flight_dist_pos = 2246
set osd_altitude_pos = 2214
set osd_warnings_pos = 14346
set osd_avg_cell_voltage_pos = 2451
set osd_stat_max_spd = OFF
set osd_stat_bbox = OFF
set osd_stat_bb_no = OFF
set expresslrs_uid = 146,114,224,67,224,253
set expresslrs_rate_index = 1
set name = RSSI LOW

profile 0

profile 1

profile 2

# restore original profile selection
profile 0

rateprofile 0

# rateprofile 0
set throttle_limit_type = SCALE
set throttle_limit_percent = 80

rateprofile 1

rateprofile 2

rateprofile 3

rateprofile 4

rateprofile 5

# restore original rateprofile selection
rateprofile 0

# save configuration
save

# version
# INAV/MATEKF411_RSSI 4.1.0 Feb 11 2022 / 10:56:36 (611d26f4)
# GCC-10.2.1 20201103 (release)

# start the command batch
batch start

# reset configuration to default settings
defaults noreboot

# resources

# mixer

mmix reset

mmix 0  1.000 -1.000  1.000 -1.000
mmix 1  1.000 -1.000 -1.000  1.000
mmix 2  1.000  1.000  1.000  1.000
mmix 3  1.000  1.000 -1.000 -1.000

# servo mix

# servo

# safehome

# logic

# gvar

# pid

# feature
feature -TX_PROF_SEL
feature GPS
feature PWM_OUTPUT_ENABLE

# beeper

# blackbox
blackbox -NAV_ACC
blackbox NAV_POS
blackbox NAV_PID
blackbox MAG
blackbox ACC
blackbox ATTI
blackbox RC_DATA
blackbox RC_COMMAND
blackbox MOTORS

# map

# serial
serial 0 2097152 115200 115200 0 115200
serial 1 64 115200 115200 0 115200
serial 30 2 115200 38400 0 115200

# aux
aux 0 0 0 1700 2100
aux 1 1 1 900 1700
aux 2 11 2 1300 1700
aux 3 10 2 1700 2100
aux 4 3 1 1300 1700
aux 5 13 3 1700 2100

# adjrange

# rxrange

# temp_sensor

# wp
#wp 0 invalid

# osd_layout
osd_layout 0 0 21 5 V
osd_layout 0 1 19 11 V
osd_layout 0 2 0 0 V
osd_layout 0 7 4 3 V
osd_layout 0 8 13 4 V
osd_layout 0 9 1 2 H
osd_layout 0 11 4 10 V
osd_layout 0 12 4 11 V
osd_layout 0 13 4 7 V
osd_layout 0 14 20 6 V
osd_layout 0 15 3 6 V
osd_layout 0 20 14 14 V
osd_layout 0 21 3 14 V
osd_layout 0 22 15 12 V
osd_layout 0 23 12 13 V
osd_layout 0 28 1 11 H
osd_layout 0 29 20 2 V
osd_layout 0 30 1 0 V
osd_layout 0 32 19 10 V
osd_layout 0 36 2 7 H
osd_layout 0 40 1 2 V

# master
set looptime = 500
set gyro_main_lpf_hz = 110
set gyro_main_lpf_type = PT1
set dynamic_gyro_notch_q = 250
set dynamic_gyro_notch_min_hz = 120
set setpoint_kalman_q = 200
set acc_hardware = MPU6000
set acczero_x = 10
set acczero_y = 14
set acczero_z = -27
set accgain_x = 4084
set accgain_y = 4103
set accgain_z = 4089
set align_mag = CW0
set mag_hardware = HMC5883
set magzero_x = -303
set magzero_y = -557
set magzero_z = -341
set maggain_x = 612
set maggain_y = 509
set maggain_z = 554
set baro_hardware = MS5611
set serialrx_provider = CRSF
set blackbox_rate_denom = 2
set motor_pwm_protocol = DSHOT300
set failsafe_procedure = RTH
set model_preview_type = 3
set applied_defaults = 2
set gps_provider = NMEA
set airmode_type = THROTTLE_THRESHOLD
set nav_extra_arming_safety = OFF
set nav_rth_altitude = 3000
set report_cell_voltage = ON
set i2c_speed = 800KHZ
set dji_esc_temp_source = IMU
set dji_rssi_source = CRSF_LQ
set dji_use_adjustments = ON

# profile
profile 1

set mc_p_pitch = 35
set mc_i_pitch = 50
set mc_d_pitch = 25
set mc_p_roll = 35
set mc_i_roll = 50
set mc_p_yaw = 30
set mc_i_yaw = 60
set dterm_lpf_type = PT3
set d_boost_max =  1.500
set antigravity_gain =  2.000
set antigravity_accelerator =  5.000
set smith_predictor_delay =  1.500
set tpa_rate = 20
set tpa_breakpoint = 1200
set rc_yaw_expo = 70
set roll_rate = 70
set pitch_rate = 70
set yaw_rate = 60

# profile
profile 2


# profile
profile 3


# battery_profile
battery_profile 1

set vbat_min_cell_voltage = 280
set vbat_warning_cell_voltage = 300
set throttle_scale =  0.600

# battery_profile
battery_profile 2


# battery_profile
battery_profile 3


# restore original profile selection
profile 1
battery_profile 1

# save configuration
save