Lets make a 3D printed quadcopter frame! This build is for the 3D Design contest, along with my hobby. This frame is different compared to conventional frames wherein its more of a Cross or X, This frame is more of a Semi H/X. Compared to other frames this design will give you a lot of space especially for your FPV equipment, Gimbal, and more. Its Faster than your normal X configuration quad, just pack it with some of your favorite motors,ESC', Batteries and receivers and your ready to go
This build will be concentrating on the frame build and electronics parts only for the tuning its up to you or your local hobbyist to help you out in tuning. (LOOK at the last step for the best way to get your quad running without doing manual tuning)
Design: The design is based from the 250 Blackout mini Quad, I was inspired in our local flying which lead me to making this using my old F450 parts. The 250 Blackout frame is famous among mini Racers since its designed to crash and its length gives it the upper hand to pitch forward with ease and speed
250 size Mini Quad Race video
Acro Session with my Quad using my DIY MULTIWII
(MAKE YOUR MULTIWII FLIGHT CONTROLLER HERE)
Go to the next steps and download Parts.rar for the stl files and PM me for the RAW sketchup file or DWG file.
Specs and Key features
600g ~ 1200g
8 × 4.5in
22 × 12mm (Stator size)
Wireless programming Via Bluetooth for PID settings, Telemetry and in flight data logging (NOT A WIRELESS CONTROLLER)
Printing Cost & time~ $$$
It took about 8 hour of printing, with a cost of almost 56$ here in the Philippines
Looking for local 3D printing service?
Heres a good website on where to start 3D HUBs
Tools & MAterials
sandpaper any grit that will just smooth en the surface
Parts- Next step for 3D print infill setting
1x Heli Landing gear
4x Side Base
8x Standoffs 3x35mm
12x 3x20mm screws
16x 3x10 Screws
16x 8 to 10mm long M3 or 3mm screws
4x 920Kv or 950kv brushless motors , "GEARBEST SALE" 03/18/2016
16x 3mmx8mm screws
1x 4 in 1 ESC 25A / 4x ESC opto
Print setting is crucial in this project because in here we can control the weight and stiffness of each part, as well as printing cost and time.
Layer thickness .25
Layer thickness .3
Layer thickness .3
LAyer thickness .25
Top Base 1 and 2
Layer thickness .3
Once you receive your parts there might be a need for some drilling and certainly gluing because this 330 size frame exceeds most 3d printer sizes I decided to split some parts of the frame and just glue it together once its with me.
Things to do
1. Drill all the holes you see with a 3mm drill bit
2. sandpaper the rough edges/ surfaces
The slots you see encircled are the slots for your Arms you will need:
12x 3mmx20mm Screws
Insert all the screw first then lay it down on a flat surface, Attach the arms just like what I did on the 2nd picture
I used 2 screws since i'm out of stock.
There are different types of Heli Landing gear and im not familiar with this so in this step its up to you on how will you be able to attach your landing gear, but anyways here what I did
doing the usual technique
Position your landing gear then mark the holes using a pen/marker then just start drilling easy right! After that just use the screws that came with it and your done.
As you noticed there are 2 layers of the same part. This is because a layer is not strong enough to make a Quad fly, try bending one i'm sure you'll know why. So when you stack two layers bending will no longer be an issue.
Things you will need for this step:
8x 3mmx10mm screws
8x 35mm standoffs
12x Lock nuts
Attach the standoffs first on the 2nd base and once done align the 2nd base through the screw holes then finally get your lock nuts and lock it in place.
Easy as it is just attach the last parts
8x 3mmx10mm screw
Top base plate 3D printed and glued
By logic just screw it in place and your done!
The electronics parts of the Quad copter is quite easy but some people just dont know how to spend wisely. So I will help you guys pick your parts according to my wishlist
Flight controller Multiwii series (I do not suggest buying the kk2 if your are going to go FPV and acrobat) If you want to learn flips on your quad and FPV go for Multiwii because there are more mode options compared to kk2 wherein it will just give you the LCD tuning option, after that you cant upgrade it anymore unlike the Multiiwii wherein you can ttach a GPS, bluetooth module and an LCD.
Wireless programmer (bluetooth)
Motors in my guide I used the DJI 920KV but as I learned through my hobby DJI is overpriced so my friends in our local flying field suggested this motor. Its cheaper and basically the same as the DJI 920kv.
ESC I chose the 25A ESC because it will give you that extra power you need when flipping You can also pick 4 in 1 ESC' because it will lessen the wiring problems.
Transmitter! Something expensive as the quad but will give you everything you need. I use the Turnigy 9Xr but trust me this is better since it includes the Casing with it
Battery, You would want to range from 4000mah to 5500mah but I suggest using 4000mah
Charger, For a beginners setup this is the Ideal one since it will maintain your batteries health and balance it properly (Do not use Cheap chargers)
You will need
16x 3mmx8mm screws
Easy as it is just screw things in place and proceed to the next step
Wiring may change as your flight controller differ so better check you flight controllers pin out over the manual.
But this is the usual standard connection for your Quadcopter
The connections are really simple
There is a saying watching is better than reading in terms of learning so here
A guide over youtube to help you guys Credits to the Owner
The Flight controller I suggested does not need an FTDI uploader since its built in
If you have problems with your flight controller configuration then feel free to ask me over the private message.
Dont forget to calibrate Accelerometer by putting your quad on a flat surface
And calibrate your magnetometer by rotating is in all axis for 30 seconds
And you if you have the bluetooth module (Upload the Multiwii program first before doing wireless)
simply connect the following
Bluetooth | Multiwii
5V | 5V
Gnd | Gnd
Tx | Rx
Rx | Tx
Programming with a Wire sucks lets go to the next level which is a lot better
Download this in your android phone
For apple devices try looking for some multiwii programs because I have no idea about apple~ This app is very useful, It eliminates all the drag of bringing a laptop and tuning it on the field and then testing the values all over and over again through a "cable and a laptop" ..that sucks. So here I wish you a safe flight and have nice day!
Tuning is actually easy as long as you have a bluetooth module. Be patient and take your time reading
Or if you know some people around who deals with multi rotors such as this Quad then better ask help from the professional. It will be much easier tuning it with someone experienced.
I will Elaborate more on this step for those who are more advanced and with the ones who have expensive flight controllers.
AUTOTUNE - This is the way I do it with my latest flight controller "APM 2.6 with UBLOX6H GPS/compass". This is a flight controller that is somewhat expensive compared to the multiwii or kk2 it has everything you need from the basics to the advanced, like return to launch, loiter, GPS lock, way points etc. This is the ideal flight controller for most quadcopters since its performance is noticeable compared to the kk2 and multiwii with that is has more than a dozen features to help you start out with the basics of flying a drone.
APM "ArduPilotMega" just like an arduino mega it packs a lot! making this flight controller a good one
setting this APM up is a long process so a youtube video will help a lot
Watch every step in the video, but you will notice some changes when you do it yourself since the video has an outdated mission planner and the up to date mission planner guides you in the whole setup.