Let's Make Robots!

My UAV ideas

I've been reading this site for the past week or so, and it has really inspired me to get more into robotics. I've had a couple of ideas for robots that I want to make in the future, I am going to start of with fritsl's starting robot, but I just wanted to share some of my future ideas to see what you guys think.

My favorite of a bunch of (probably a bit rubbish) ideas is for a UAV. There don't seem to be many posted on the site, and I expect that making it will be pretty hard (defiantly not a first robot). My ideas are partly based upon the lego model #8222 which features two movable rotors, I would also probably need some smaller fans for stabalisation. Here are some of my first drawings:

first drawings

The top two are just a helicopter and the lego model i sketched, the bottom two are my designs, I ought to label them to make it clearer for you, and me in future:

labeled drawing

Hope this is fairly clear, my writing isn't very good.

Here are some more design pictures:



These are partly designed upon the Eurocopter PAH-2 Tiger (featured in Goldeneye if anyone is a James Bond fan). But my final design will probably look more like the dragonfly from Trek Aerospace, on a much smaller scale as it will definatly not be a PAV.

What do you think?

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I dont know exactly what you mean by  "paperwork predator"  but I know I sure wouldnt mind takeing a look!!!

This person has build a UAV with a blimp.


it's is a pretty simple design and you don't have trouble stabelising this.

Cause an airplain is pretty difficult to stabelise.

You only need to work on the GPS and the other localisation stuff.


I don't know if you are interested since i've seen from the pictures that the chassis is going to be different, but in case you want it, i have the link to make a paperwork predator UAV.

The predator looks more like what Justin was designing, I have drawn a few more designs, I will put them into the main post. These were partly based upon the Eurocopter PAH-2 Tiger. But after seeing the dragonfly on trek aerospace, I will probably base it more on that.

Thanks, diydrones looks really good, lots of info and has made me realise that more thought needs to go into this. The motor control would be handled by the processor and code, so I would need to implement the algorithms into this. I guess that accelerometers would also help to detect and stop the uav from flipping or rolling.

Lanternfish, do you mean to build a concept with RC helicopters or what? I don't quite understand what you are saying.

Things I'm going to need for this project:


  • Chassis/frame
  • Powerful ducted fans
  • gyro/accelerometer (combined)
  • distance sensors (IR/Ultrasonic)
  • servos (for motor positioning)
  • RC module
  • controller & code 
  • gps?


A UAV that would have the ability to hover (apparently anyway) like the one your proposing could be tricky. To do this right, you need to look into dynamic balance and feedback. Keeping the lift "balanced" on both fans would be crucial, especially while the UAV is in motion, otherwise the UAV would at some point go into self-oscillating side to side and just simply flip over. Here is a website I ran across awhile ago you might find really useful http://diydrones.com/ Lots of articles and how-to's and some interesting hardware. To give you an idea of SOME of the math's involved this Wikipedia article has some good stuff.

Yes, RC helicopter stuff should be a good source for material. Don't get discouraged, it may be a bit harder than you think initially, but keep at it! You are thinking about doing some really interesting stuff that others here would love to see!

Have you thought about buying a couple of this miniature RC/InfraRed controlled helicopters to get you started? That is, to get a proof of concept vehicle happening.



Ok sorry for the poor quality I didn’t feel like hooking up the scanner…



Ok I’ll scan them in soon, but same as you there just ideas for the future. I love that one robologist just showed. So far my idea was to build something similar to a Drown used by the military. But the stability of that thing was incredible, would be very nice for surveillance. I made a 3’ wing in aerospace engineering class which flew very good, so at least I know how to make one of them.    

Here's a commercial version of your UAV.

THey have a video page, but was unable toi see it in Firefox.