Quadcopters, FPV, open source and 3D printing. How much do these exciting technologies have in common? More than you might think. While it’s not yet possible to fabricate components like motors, sensors and electronics it’s entirely possible to 3D print parts like the frame, landing gear, and even propellers.
Punkkills has recently published his design for a truly impressive 105 brushed FPV quadcopter. Punkkills frame was inspired by the FireFlo V2 and the Alpine Drones Micro H. Goals were to keep it crash resistant and light weight. Frame measures ~105mm, weighs ~8g when printed in PLA, a full build weighs ~38g without the battery. It is designed around 8.5mm motors and the Micro Scisky, a Naze32 type flight controller. A really small camera and FPV TX module provide the first person flight experience.
FPV 105 Setup:
- Flight Controller: MicroScisky (~ $30). The hardware of the FC is based on Naze 32, you could run either open source firmware Cleanflight or Betaflight.
- Motors: 2×2 set of Hubsan X4 H107c 8.5mm Motors (~ $10)
- VTX: FX758-2 5.8G 200mW Video Transmitter (~ 11$)
- Antenna: Punkkills used the inner wire from the coaxial cable of a broken antenna. cut the antenna to 12.8mm which is the quarter wavelength of 5.8Ghz band. frequency
- Camera: 600TVL 1.8mm 170 Degree Wide Angle Camera 3.7-5V (~$9)
- Battery: Hubsan X4 batteries ($4) work pretty good.
- Charger: Charger For Eachine H8 or mini Hubsan X4 or Syma X5. About $7 if you dont already have one of those quadcopters.
- Props: Ladybird props hold up a lot better than the Hubsan props ($5).
- Misc Hardware: JST SH Connector to power FC and FPV gear. Either M3 x 20mm nylon nuts and machine screws or Printable Standoff And Clip from navyblueboss remix
- RC Transmitter: Any DSM2 protocol capable. A Devo 7E it’s pretty cheap, supports DSM2 with a open source Deviation firmware change, and virtually every other quadcopter protocol (Syma, Cheerson, WL Toys, …) with some soldering.
- PLA or ABS Printed Frame from Thingverse.
Punkkills recommended PID settings for Betaflight 2.4.1 will get you about 4 minutes of flight at insane speeds.
set motor_pwm_rate = 32000
set max_throttle = 2000
set pid_controller = MWREWRITE
set p_pitch = 51
set i_pitch = 37
set d_pitch = 48
set p_roll = 39
set i_roll = 43
set d_roll = 35
set p_yaw = 100
set i_yaw = 50
set d_yaw = 0