Super cheap FPV racing drone revisit

Improved pusher racing drone

I recently made some improvements to my previously designed super cheap racing drone. Previous version was converted to a pusher configuration to maximize the cheap electronics performance.

Having the motors in a pusher configuration helps reduce drag caused by a hefty frame. To further improve the design I modeled a new more compact 3D printed canapie which also contributes to improved flight performance. To make the THICC frame even more indestrucable I also 3D printed bumpers mounted at the end of each arm.

Audio amplifier complete design (Tpa3116d2)

Purchase pcbs here: https://www.pcbway.com/project/shareproject/Tpa3116_2x50w_audio_amplifier_board.html

3D files

Amplifier PCB

I designed a complete enclosure to house my previously designed tpa3116 2x50w amplifier board.

The design includes a 10A fuse to protect the amplifier board in case of a short-circiut or a reverse polarity of the power supply. I also fitted the amplifier ic with a heat sink which help the amplifier to achive the desired 2x50W of output power.

The enclosure is equipped whits several 5mm banana plugs for power transfer and 2 pairs of audio signal jacks.

Simple Contactless hand sanitizer / Soap Dispenser

Automatic hand sanitizer using a 9 gram servo, ultrasonic proximity sensor and arduino nano. The mechanism is very simple using only a string to push down on the cap of the hand sanitizer.

In depth tutorial: https://www.instructables.com/id/Simple-Automatic-Hand-Sanitizer-Soap-Dispenser/

3D print files: https://www.thingiverse.com/thing:4235115

Arduino code: https://drive.google.com/file/d/1OtrWPEkT9Di8dzfqBdbh0d4LK9d1ofnP/view?usp=sharing

For further questions feel free to contact me via e-mail.

Super cheap FPV racing drone

Racing drone built for everyone on a tight budget.

Parts list:

  • Frame : Home milled carbon fibre frame – 250mm – 10€ (cost of carbon fibre sheet)
  • Motors: MultiStar V-Spec 1808 – 2400KV Multi-Rotor Motor – 4 x 3,99€ (bought at a clearance sale)
  • Props: KingKong Multirotor Propeller 5×4 – 3,2€
  • fpv drone camera : Foxeer Razer Micro 1/3 CMOS 1.8mm Lens – 14,37 €
  • ESC: 4x – Hobbywing XRotor Multi-Rotor ESC Opto 15A – 4 x 6,47 €
  • Flight controller: F3 Flight Controller Acro 6 DOF/Deluxe 10 DOF – 11,74 €
  • VTX: Eachine TS5828L Micro 5.8G 600mW 40CH – 8,94 €
  • VTX Antenna: Realacc Pagoda Antenna – 3,28 €
  • Reciever: Flysky FS-A8S FS A8S V2 2.4G 8CH Mini – 8,32 €
  • Battery: 3s 1300Mah 60c – 14,57 €
  • 3D printed canapie

The fpv drone price wo. battery is around 95€.

The drone has a 4,5-to-1 thrust to weight ratio. Total weight is about 500g.