Pirx 5 Freestyle - because analog dead-cat is just better!

Pirx 5 Freestyle FPV frame

Everything in the 5" freestyle FPV frames was already discovered and we do not need new frames? Bullshit! All the frames that I tried so fast, even the ones from the most reputable manufacturers, were always "ok, cool, but I do not get this think over here!". Pick your own: too tight, not a good place for a GoPro, lack of mounting options, and dozens of other WTF moments.

>> Get it from Armattan Productions <<

Pirx 5 Freestyle FPV frame

Features

Weight: 130 assembled before 3D printed elements
Fits 30x30mm stack or 20x20mm stack in the center of the gravity
Mounting holes for a half-stack in the rear for VTX and other equipment
Fits micro FPV camera (19mm) in the front on TPU brackets
Designed for top mounted Li-Po
When needed can carry a LiPo on the bottom
Thanks to dead-cat layout, there are no props in the view while still keeping main body of the frame relatively short. Thank to this, Pirx 5 has low moment on inertial on the pitch axis and you have a clear view without propeller discs!
30mm space between decks fits all the flight stacks!
Designed for analog, will fit the Caddx Vista in the back with 12cm camera cable
Both decks are part of the structure. Thanks to this, Pirx 5 is quite stiff and designed to survive!
4mm arms, 4mm bottom deck and 2mm top plate increase toughness even more

Pirx 5 Freestyle FPV frame

Required 3D prints

Optional 3D prints

Pirx 5 Freestyle FPV frame

Reference build

Pirx 5 Freestyle FPV frame

PID Tuning

Betaflight 4.2

set p_pitch = 37
set i_pitch = 70
set d_pitch = 42
set f_pitch = 85
set p_roll = 34
set i_roll = 60
set d_roll = 39
set f_roll = 85
set p_yaw = 35
set i_yaw = 70
set d_yaw = 0
set f_yaw = 85
set d_min_roll = 26
set d_min_pitch = 28
set d_min_yaw = 0

INAV 2.6

set looptime = 250
set gyro_hardware_lpf = 256HZ
set gyro_lpf_hz = 135
set gyro_lpf_type = PT1
set dynamic_gyro_notch_enabled = ON
set dynamic_gyro_notch_q = 260
set dynamic_gyro_notch_min_hz = 125
set motor_pwm_protocol = DSHOT600
set mc_p_pitch = 37
set mc_i_pitch = 70
set mc_d_pitch = 30
set mc_cd_pitch = 85
set mc_p_roll = 34
set mc_i_roll = 60
set mc_d_roll = 28
set mc_cd_roll = 85
set mc_p_yaw = 35
set mc_i_yaw = 70
set mc_cd_yaw = 85
set dterm_lpf_hz = 110
set dterm_lpf_type = PT1
set dterm_lpf2_hz = 170
set dterm_lpf2_type = PT1
set mc_iterm_relax_cutoff = 10
set d_boost_factor =  1.450
set antigravity_gain =  3.000
set antigravity_accelerator =  5.000
set setpoint_kalman_enabled = ON
set setpoint_kalman_q = 285
set setpoint_kalman_w = 8
set tpa_rate = 15
set tpa_breakpoint = 1200
set rc_yaw_expo = 70
set roll_rate = 80
set pitch_rate = 80
set yaw_rate = 70