Introduction: Quadcopter MultiWii Pro

Hello everyone.

I would like to share my Quadcopter story, including the mistakes and problems. First of all, I would like to tell you who I am. I’m Martijn and I’m a third year student at The Hague University of Applied Sciences ( The building is located nearby the TU Delft) in the Netherlands. I started flying in the summer of 2013.

Step 1: Order List

This is my order list:

I bought a lot of parts, and some of them were bought incorrectly. Fortunately I could make a second one with the spare parts(Still working on it). Somewhere in the near future, I will edit this post to make for both of the quads a list of the parts.

Step 2: Safety

Be safe or you will have to go to the first aid. I’ve got a beautiful nose-cut due to unsafe handling. It happened when I was calibrating the ESC. I didn’t follow the safety advice, which was to remove the propellers when calibrating the ESC! 
My advice: Watch yourself, First aid is expensive in the weekends.

(ESC= The speed-controllers of the Multi-copter.)

Step 3: First Quadcopter

Here you can see my first quadcopter. T
he most important part was that it flew, but the motors were spinning to fast. 
I was happy that it could fly. But I had problems getting it in the air, so I bought some other servo motors.
The quadcopter was lightweight.

Click here to see my first flight with the quadcopter..

Step 4: Upgrades

My uncle and I made new arms for the quadcopter. I changed the motors to bigger ones, a bigger 12 inch 4,5 propeller, new positions for the high power leds, a new ESC for higher Ampere and a new transmitter.

Step 5: Led Power

You can see the blue package. It is a set of 2 rechargeable batteries. Both containing 1,5V, resulting in 3V. The lights are parallel connected to the batteries.

The two LiPo battery's I didn't use because this was to heavy for the first quad. The battery's both are 2 cells Li-Po battery's and my second setup quad i use a 3 cells Li-Po battery.
 

Step 6: Second Quadcopter

This is the start of something beautiful…

The arms

That angle profiles are far from ideal for this application. Because they are not symmetrical, the poor will not only bend the vertical force, but also twist. That would be annoying torsional vibrations may cause.

Usually, the strength (in normal flight conditions) is not critical for aluminum arms, tensions are relatively small. However, the stiffness may still pose a problem. Insufficiently rigid means risk of vibration. In crashes can obviously much greater stresses occur, but which are difficult to predict. But both strength and stiffness of perspective is a closed tubular section (round or square) is by far the most favorable. You might be a profile, but is considerably less stiff than a tube. Compare the moments of inertia of the different profiles / sections only once.

Step 7: New Quad

this is still in develop

Step 8: Communication and Camera System

Fly data:

For the communication between computer and quadcopter, I’m using the APM220(#define SERIAL2_COM_SPEED 57600). In the WINGUI, the refresh rate is set to 5hz.

Camera system:

On this link you can see my camera setup as it is at the moment. It’s still in test-mode though!

- TerraTec Grabby

- 5.8 GHz transmitter 200mW (Boscam)

- 5.8 GHz reciever (Boscam)

- SONY CCD 1/3inch Camera

- Circular polarized antenna's aka "clover leaf antennas"

Step 9: Programs

I use a few programs:

- Arduino

- MultiWiiGui (WINGUI)

- VLC

- ecalc (Use this to calculate your setup before buying something!!!!!)


I’m not going to explain this part, because there is a lot of information out there on the internet to.

Step 10: Crashes

I made a few beautiful crashes, though I learned from it and tried to repair it. Once repaired, I took it back into the air and now it’s flying again. Everyone is about to crash with a quadcopter. It’s just an amount of time….

So make sure your fail-safe works before you fly!

One time I had lost my quadcopter, but I was lucky enough to find it back. Here is the video.

Step 11: Questions

Yes it is able to fly and I like to fly aswell. So don’t hesitate to ask for help.

I will make this instructable more complete soon enough along with some more information.

If you got questions, I’ll try to answer them for you. You can mail your questions to : martijnvwezel@gmail.com, use in subject MultiWii, so it will go to the right map.

Comments

author
Revanchist (author)2014-03-16

I have a question for you, or anyone well versed in the science of quadcoptering.... will 3D printed propellers work the same? or do I have to get one off the shelf at any hobby shop? I don't live in the US so those stores are rare, and extremely expensive. I do have a Replicator 2, so 3D printing quality is amazing... Thank you kindly

author
mwezel (author)Revanchist2014-03-16

I wouldn't recommend to 3d print your propellors, because the little imperfections will cause much of vibrations. I ballance my props with just a few mm of tape. ________

Are you familiar with hobbyking.com or dx.com? Or is this not possible to let you diliver your props? I bought 8 new props just in case. If you are new go the hobby I recommend a flitetest.com I will send you soon the link of a beter beginners quad.

author
Revanchist (author)mwezel2014-03-16

Thanks for your quick response, I am familiar with dx.com, however it takes like 2 months to arrive in Canada. What size props would I need for a regular sized quadcopter? I see there are a lot of different sizes out there... some seem to be for RC planes etc..

Thanks again!

author
mwezel (author)Revanchist2014-03-16

depend witch motors

author
Revanchist (author)mwezel2014-03-17

I see... would the motor manufacturer specify a prop size? I am looking at some on ebay: http://www.ebay.com/itm/130952293024?ssPageName=ST... but it doesn't say which props to use.

Thanks

author
mwezel (author)Revanchist2015-04-30

8 inch is quit good

author
mwezel (author)Revanchist2015-04-30

depending totally how big your quad would be, I recommand 10 inch for my quad and 12 when I fly package with me

author
mwezel (author)mwezel2014-03-16

https://www.youtube.com/watch?v=B7R_B2aOiho&feature=youtube_gdata_player

author
Revanchist (author)mwezel2014-03-16

love the link, thanks!

author
mwezel (author)Revanchist2014-03-16

you will like the channel

author
mwezel (author)2015-04-30

It's not that hard, used my battery and connect it to an special board. And from this board there are separations to the ESC. The servo connection from the ESC to the multi-wii board and the each ESC to one motor

author
vibhor92 (author)2014-03-26

I wanted to know which camera you are using and how are you transmitting the video feed to your laptop.

author
mwezel (author)vibhor922014-03-26

I add the info @step8

I hope there's enough information. If you want how i hook it up? Look at youtube video

author
ishan553 (author)2014-03-13

please tell us how to make it , all the steps , the code and the list of materials to buy plz

u can email on ishanphansalkar@gmail.com

author
mwezel (author)ishan5532014-03-13

Soon I will do it

author
ishan553 (author)mwezel2014-03-13

thanks

author
Stan1y (author)2014-03-13

This is on my list of things to do.

How ever whilst I don't normaly do health and saftey, but having cut the sides off my indexfinger on an 8x4 prop conected to a speed 400 motor, I'll make this suggestion.

Use a black ink marker and colour the prop tips it makes the edge of the prop arch easier to see. I learnt the hard way that whilst an internal combustion (I/C) motor will stall if something gets in the prop electrics keep trying to turn whilst they have power hence I lost both sides of my finger had it been a suitable I/C engine for that prop I'd probably just got a single nasty but lesser wound.

author
mwezel (author)2014-03-11

you are sireus? I am happy I had a good reflect that protected my eyes!

author
Stan1y (author)mwezel2014-03-13

Sorry I was trying to make the comment from a mobile device and it kept publishing before I completed

author
mwezel (author)2014-03-12

tank you!

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