M300 Quadcopter

A 300 sized quadcopter for 3D printing. This quad has been designed for use with 6" props and a Q-brain esc. You don't have to use a Q-Brain, but it integrates into the frame nicely and cleans up the wiring without a power distribution board. Arms are unique and carry 2 motors each, which increases strength and simplifies body attachment.

I didn't bother to design a recording camera mount at this point because I don't want the extra weight/cost and my Dominator googles have a built in DVR. An easy top plate mod if I change my mind.

Note: Added "split frame" file for those with less than an 10" bed. Post printing gluing required.

BOM:

Printed parts (see instructions)

Electronics:

Flight Controller with side pins such as a CC3D

Rx such as X6R

ESC such as Q-Brain 4x20 or 4x25, 4S capable

Low Battery Buzzer

Motors with 16x19 bolt pattern, 2204/06/08 sized, 1900-2300kV

XT60 female for ESC to Q-brain power leads

2mm bullet connectors for Q-Brain to motors x12

Battery, 1300-2200mah, 4S, XT60 connector x2-6

Camera, 25x25 board in case (or smaller)

VTx, such as fatshark 250mW or 600mW

Googles such as Fatshark Dominators (with Rx module & batteries)

Antenna such as fatshark spironet or bluebeam ultra (pair needed)

Radio such as taranis X9D+

Battery charger such as IMAX B6

Hardware

m3x45mm hex bolts x12

M3x40mm hex bolts x6 + spares (landing legs)

M3x8mm for motors x16

M3x10mm for camera x1

M3x16-20mm for RX holder

M3 nyloc nuts x20

M3 washers x26

Household elastics to hold motor wires, could also just tape them

Velcro strips (my preference for all electronic except FC)

Velcro strap for battery

Foam or gel pad for flight controller (optional)

Shrink Wrap for wiring and holding Rx antenna

Other:

Props!

6030 if you are starting out (still can really move!)

6040 or 6045 otherwise

M5 nyloc nuts and washers for props (unless you have multi direction threads or a different size mount)

You need a bed bigger than 200x200 (8"x8") for the top and bottom plates. DO NOT PRINT PLATES AND ARMS WITH 100% INFILL, you will be unnecessarily heavy.

Need 2 arms, 1 top plate, 1 bottom plate, 2 22mm pegs, 2 center shields, 1 camera shield, 1 Rx holder

For a 0.4mm nozzle at 0.2mm layer heights I'd recommend:

Arms

6 bottom, 8 top, 5 perimeters, 20-30% rectilinear infill

Top and Bottom Plate

2 bottom, 3 top, rectilinear

8-12 perimeters, 15-25% honeycomb infill

Material: I used PLA for the body and PHA for the arms and landing leg tips. However, I would recommend PETG if you can print it.

If you do go with the fatshark 600mw vtx:

http://www.thingiverse.com/thing:865127