Quadcopter

The electrical parts:

• Radio transmitter
  • Tx: COCKPIT SX M-LINK
    • Replacement battery: NiMh Tx 7.2V 2100mAh (40€)
  • Rx: RX-7-DR M-LINK 2.4 ghz with telemetry
    • Input voltage: 3.5v .. 9v
    • Output PPMs (brown outside in KK2):
      • rcv -> KK2 (pos)
      • 1 -> AIL (1)
      • 2 -> ELE (2)
      • 3 -> RUDD (4)
      • 4 -> THR (3)
      • na
      • na
      • 7 -> AUX (5)
  • 160€
• KK 2.0 control board
  • and its USB interface, if it gets back in stock one day
  • Input voltage: 4.8v .. 6.0V
  • 32$
• 4x Motors. DT750 750 Kv
  • Thrust measured: 900-1200g
  • 53.24$
• 4x ESC HK SS Series 35-40A (manual)
  • Output voltage: 5.5v
  • 52.68$
• 2x 10x4.5 SF Props 2pc Standard Rotation/2 pc RH Rotation (Red and green)
  • 12$
• 2x Turnigy nano-tech 2200mah 3S 25~50C Lipo
  • 39.40$

==> Electrical parts price: 160€ + 197$ (140€)

First version will be run by the KK 2.0 control board, and the next one hopefully with Arduino

--> full weight with old frame (batteries, motors, ...): 2200g

The New Frame:

• Hobbyking Alien 560 (assembly instructions)

--> full weight with new frame: 1.300kg

Wires, cables and connectors

• Battery wiring

  • 2x XT60 male plugs: ...
  • 2x wire 16AWG, 1m red - 1m black: 13.80€
  • 4x DEANS Male/Female plugs: 11.80€

• Servo wires

  • 5m: 14.50€
  • no female/female wire for rx/fc connection, so:
    • 3x Male connector (funtaba) 30cm: 6.75€
    • 5x Male(/Female) wire extension (funtaba) 10cm: 18.75€

==> wire price: 65€ (that's way too expensive, don't buy at idde-modelisme / Grenoble !)

The Old Frame:

Design turn-over: it's now a 'traditional' H quadcopter design, the tail (and propellers) of the V-tail was way too close to the ground to be safely operated by a beginner !

Design turn-down (08/2015): my construct is too weak, I didn't put enough rigor while building it, so it's time to get rid of it and buy an off-the-self frame kit ... (HK Alien 560)

• 32mm PVC pipe.
  • The distance between the rear and front motors 600mm.
  • The distance between front motors 600mm (590mm)
  • The distance between the rear motors 280mm (300mm)
  • 2x1m: 3.38€
• 4 pc PVC T-connection, 2 is the front motor mount. And 2 for connecting the frame together.
  • 4x: 7€
• 2 pc. off wall mounting bracket for PVC pipes. Under the grey box where the control board is mounted.
• 1 pc off electrical box 80x80mm for flight control board and receiver.
  • 1.25€
• Some screws in the T-connection to secure them in place.
• Zip ties for connecting motors.
  • 200x, various sizes: 1.90€
• Rubber tap
  • 0.95€
• Velcro for mounting the batteries to the frame.
• The angle on the rear motors is 25 degree.
• The weight is 1030 gram without battery and camera.

==> frame price: 20€

Original design based on V-tail Quad | Flite Test