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Ever needed an excuse to start building Lego again? Now is the time! Turns out Lego bricks can be used to build a perfect symmetrical frame for your quadcopter! And... it's super cheap.

I used Lego Technic because it has holes in the bricks. You can mount the motor's with tie wraps through the holes and it's an ideal weight reduction. For the motor's and flight controller I used parts from the famous Hubsan X4.

Interested...? Then dust of those Lego bricks and start building! Or get the complete kit at kitables.co. It has everything you need to get your Lego quad in the air!

Step 1: Tools and materials

You'll need the following tools/materials:

  • Lego (of course)
  • Soldering iron
  • Elastic band
  • Soldering tin for electric components (optional)
  • Doublesided tape (optional)

I ordered my Hubsan X4 parts from Banggood.com. http://www.banggood.com/buy/Hubsan-x4.html They have the parts even cheaper then ebay. This is what you need:

  • Hubsan flight controler 107l or 107c (107l if your planning on adding fancy led lights, 107c if your planning on adding a camera)
  • 4 7mm hollow cup motors
  • 4 blades (and maybe some spare)
  • 3.7v battery + charger
  • Hubsan remote (if you dont have one)

If you don't have a remote yet, then it's probably cheaper to buy a rtf hubsan x4. You can take it apart and as a bonus you get the original hubsan x4 frame!

Hey Weseley can I get a shipment for this chip and controller in India, please copy the link as well if it's possible, thank you
<p>Hello Insga, I have no idea what webshops ship to India. I ordered mine from banggood.com. You can also find them on E-bay. Just search the internet, I think you know better which webshops ship too India then me. Good luck!</p>
<p>Hi Wesely,</p><p>I've never owned a drone before. What's better in your opinion, building my own lego drone or buying some cheap drone to learn how to fly first. I've seen some nice quads at an affordable price for sale here : <a href="http://www.dronesglobe.com/guide/drones-for-sale/" rel="nofollow">quads for sale</a>. I can buy JXD 509V for $65 from amazon which is pretty cheap, maybe that's good decision. I would like to build some more complex drones in future, not only lego drone. It looks like I'm right on the begining of some nice journey :)</p>
<p>Hello Anteloff,</p><p>To be honest, before building this drone I've never even flown or owned a drone. I just liked the idea of building one and started gathering parts. That way you can enjoy building your own as well as learn flying it :). You can also buy a cheap drone, learn flying it and later use it for parts for your own build. Good luck!</p>
<p>Hi there, </p><p>What type of battery is compatible with the flight controller and motors? What amperage did you use? </p><p>We were thinking of buying these: <a href="http://www.banggood.com/1-To-5-3_7V-220MAH-15C-Lipo-Battery-with-Charger-for-JJRC-H22-RC-Quadcopter-p-1010310.html" rel="nofollow">http://www.banggood.com/1-To-5-3_7V-220MAH-15C-Lip...</a></p><p>Do you know if they would work?</p><p>Thanks!</p>
<p>Hello,</p><p>The battery in the link will work. It's a little low on the amperage so it wont flight for long. On the other hand, it's not a heavy battery which makes flying easier.</p><p>I have a 220mAh and a 500mAh battery, both 3.7v, they work fine.</p><p>Good luck!</p>
<p>Awesome! Thanks so much for the response. We ended up going with the 500mAh batteries and they work great!</p>
<p>Hello,</p><p>The battery in the link will work. It's a little low on the amperage so it wont flight for long. On the other hand, it's not a heavy battery which makes flying easier.</p><p>I have a 220mAh and a 500mAh battery, both 3.7v, they work fine.</p><p>Good luck!</p>
<p>can we use any remotes other than<strong> hubsan</strong> remote ?</p>
<p>I don't know what other transmitters are compatatteble with the Hubsan X4 but I know you can make your own with an Arduino and rf chip.</p>
tnx<br>
<p>how much it costs in total </p>
<p>it is nice good instructable</p>
<p>Thank you!!</p>
<p>Thanks for the idea of lego, I was looking for a carcass and that's the best. Thanks a lot.</p>
<p>I made it and almost everything is working. The instructable is great. It seems like one of the motors works only if I manually flip the drone to almost 70 degree, so I assume that the gyro is broken or maybe the motor is wrong too. Any other ideas it can be causing it?</p><p>Thanks!</p>
<p>Hello Gabryg29,</p><p>I'm sorry for my late response... But it looks really cool! I suspect that flight controller isn't perfectly leveled. Because if that's the case, the flight controller will constantly try to balance the quad. So try to put the flight controller exactly in the middle and as level as possible. I'm almost sure that's the cause. Hope it helps, good luck!</p>
<p>why are all the parts more expensive if I buy them separate when a fully built mini quad copter costs $13 from them the board itself is like $12</p>
<p>Please send me a private message with a quote for one of these pre made posted to UK. Best, MNS</p>
can i use KK Multicopter V5.5 Flight Controller Xcopter V2.9
hey dude!! Is it necessary to use esc's(electronic speed controller)..<br>please tell me,i am new to this..
<p>Wesely, cool job !</p><p>I have been looking for a good, cheap and easy method to mount the main hubsan X4 (mainboard/flightcontroller or whatever is the right word for it and it's motors) on something else that the original &quot;fuselage&quot;.</p><p>Your method seems to be nice, especially i think of more than only having the X4 electronics to be mounted on such a lego frame, i have a 7.4 volts toy quadcopter with brushed motors here which is damaged, but electronics are okay. So i am thinking i could use your lego method on this one probably.</p><p>This leads me to my question: I have read what you did and the comments several times, but i did not find WHICH Lego parts you use ! I remember LEGO very good from my childhood and still much of them here on the attic, but those LEGOs are different, they don't have that holes inside. Please, can you exactly decribe WHICH LEGOs you use, a part number or name of that series would be helpful !</p><p>Thank you very much ! </p>
<p>Thank you Ulfulf!</p><p>The ones with the holes in it is Lego Technic. I found a website where you can get them. <a href="http://www.brickowl.com/catalog/lego-red-technic-brick-1-x-6-with-holes-3894">http://www.brickowl.com/catalog/lego-red-technic-b...</a> or google &quot;lego technic brick 1 x 6&quot; . Guaranteed to find something there. If you have some lego on the attic you probably already have the rest of the parts because they are very common. I you need more help I'll be happy to answer some further questions!</p><p>Good luck building!!</p>
<p>please explain the remote controller part............contact me at iamrohanvidhate@gmail.com</p>
<p>If you scroll down, there is a comment of me explaining how the remote works ;).</p>
<p>Would this be able to hold a camera/webcam?</p>
<p>Yes it is possible. A very light camera such as a keychain camera will work.</p>
<p>Hi,</p><p>I have 7.4V battery.It is good instead of 3.7V battery ?</p>
<p>Where can i get the Materials?</p>
<p>Hi. Thanks so much for the inspirtion. I see on Banggood they currently have what they are calling a receiver, but not a controller. <a href="http://www.banggood.com/Hubsan-X4-H107C-RC-Quadcopter-Spare-Parts-Receiver-H107C-a43-p-87802.html" rel="nofollow">http://www.banggood.com/Hubsan-X4-H107C-RC-Quadcop...</a></p><p>Could this piece serve as the controller? If not, is the receiver an optional addition?</p><p>I am also considering getting this camera. <a href="http://www.banggood.com/Hubsan-X4-H107C-RC-Quadcopter-Spare-Parts-Camera-Module-2MP-p-912169.html" rel="nofollow">http://www.banggood.com/Hubsan-X4-H107C-RC-Quadcop...</a> </p>
<p>Thanks for this amazing project. I am having some issues with flight stability. Do you have any suggestions. Thank you. Here is the video of my build. https://youtu.be/RadPd1OrpR0</p>
<p>To bad, your video isn't working... I'm really curious about your build. Instability can be caused by numerous things. You should read a comment I made 2 months a go. It covers all common instability issues. But if you try to post your video again, maybe I can see what's the problem. </p>
Hi Wesley,<br><br>I was able to fix everything after your recommendation.<br><br>Thanks.
<p>how do you charge the battery?</p>
<p>You can charge the battery with something like this: <a href="http://www.banggood.com/4-In-1-X4-Battery-Charger-For-Hubsan-X4-WLtoys-UDI-JXD-Syma-Quadcopter-p-933932.html" rel="nofollow">http://www.banggood.com/4-In-1-X4-Battery-Charger-...</a></p>
Can u also plzz send pictures for 107c about how to fix the camera
I am from India and I am not getting that 107c on amazon what should I do ???
Pretty cool build! I have an old Heliquad Blade Runner I've been eying. Might be time to dust it off and take it apart...<br><br>As far as putting a camera on, don't be afraid to take the case off folks. most of the weight in those key fobs is the shell.
<p>What about ESC's?</p>
<p>I don't think I fully understand your question, but my quad has a Hubsan flight controller which controll's the speed of the motors. </p>
<p>Could I use the motors from small rc helicopters and just add hubsan props?</p><p>And also, if I were to do this and NOT get the hubsan x4, what cheap transmitter and reciever should I get?</p>
<p>Depends on the rc motor, if the motors have the same thrust and voltage i'll think it will work. And the original transmitter costs around $17. If you want to control your quad for less money you could try to make one yourself with an arduino en rf transmitter. You should get that working for under $10, but its a lot of work. There are some instructables on that topic.</p>
Can I control this quad with smart phone? And I don't understand the connecting a controller. How I control this?
<p>could it carry light things </p>
<p>It can carry really light things yes. I have a keychain camera which weights around 15 grams. But that's really the max it can carry.</p>

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