Best Way To Build A DIY UAV?

Shojun writes "I am very interested in building my own UAV. Not just one that can fly around happily, but one that I can program to say, take photos every second as it does a barrel roll under a bus (ok, that part may be a pipe dream). I have enough embedded programming experience — it's the hardware which I'm uncertain about. I can go the kit way, and then build the remaining stuff, or get some Dollar Tree Foam boards and build it all. I'm in favor of ease, however. Once the plane is built, buying a dev board seems like a possibility, but I wonder whether it's overkill. Alternatively, if there was a How-to-build example on the net for such an activity that I could adapt, to the degree that I could then program in even completely hardcoded flight instructions, I can certainly take it from there. Thoughts? Has anyone here tried something like this before?"

Comments

forums.

[guantamanera]

go to the http://www.rcgroups.com/forums/index.php RC forums there is alot of info in what you want to do. and here is the forums you want http://www.rcgroups.com/uav-unmanned-aerial-vehicles-238/ Note that if you live in USA it is illegal to make UAV. Even first person view flying is illegal. But first you need to learn how to make stuff fly before you even attempt to do the UAV stuff.

Have tried it, and it is awesome. ND Aero Eng

[AnthonyA7]

I'm a just-graduated aerospace engineer from Notre Dame. For our senior design project, we build uav's... well, really RC planes. Everything had to be constructed from scratch, except for the electronics (motor/battery/GPS/receiver/etc). This year's goal was to have a mothership-daughtership configuration where the daughtership would detach mid-flight and maneuver on its own. Believe me, it's loads of fun to build everything from scratch, but it is a lot of work. And I definitely think it is doable by anyone, not just aerospace engineering majors.

Here was my team's plane: http://www.youtube.com/watch?v=eW68B3DnNWA

If you're interested in actually constructing the structure by yourself, I'd definitely suggest picked up a book on model airplane construction. Hobby shop dudes are also a big help, just go in and throw some ideas out and most hobby store owners will be very enthusiastic. And, if you're _really_ interested, I'd suggest Aircraft Design: A Conceptual Approach by Daniel Raymer. Link: http://www.aiaa.org/content.cfm?pageid=360&id=1396

Oh, also, flying a model aircraft requires a hell of a lot of skill- we get the awesome dudes down at the South Bend RC Plane Club to fly ours.

Autonomous glider

[bcmm]

There were some people who built an autonomous glider which could perform many of the things you mention (with the notable exception of powered flight), including flying pre-programmed routes while taking photos (as well as navigating to specified coordinates autonomously). The process of building and testing it is documented in a fair amount of detail, including information on choices made for the on board electronics.

I have no particular interest in building aircraft, and still thought that page was a good read.

Start With a Slow Stick

[Bob9113]

Not sure if you already have radio-controlled airplane experience. If you do not, I have a very solid recommendation for you:

A world-class starter platform for both learning to fly and lifting is the Slow Stick. It is one of the most popular planes with RC hackers, is cheap as dirt, has solid lifting potential (and upgrades can make it a real monster), and has lots of commercially available upgrade parts.

I'd go with a slow stick glider, and add a cheap brushless motor for starters (in fact, that's precisely what I have about six feet behind me for my first aerial photography platform). That will give you a good mix of cheap and solid lifting potential.

As for the forum, Slashdot is a good place to start for all things geeky, but the specialist forums you're looking for are at RCGroups:

http://www.rcgroups.com/

Here's the main starter thread for Slow Sticks:

http://www.rcgroups.com/forums/showthread.php?t=122951

Admit your noob-ness, ask for advice, be respectful, weather the occasional ornery response with good humor, and you can learn everything you want to know at RC Groups.

Re:Make darn sure the Feds don't mind!

[Kell Bengal]

Also expect FAA regulation, enforced by the police. Model RC planes have enough trouble getting room to fly free of interfering bureaucrats.

As you rightfully point out, though, once people appreciate that the difference between RC planes and a cruise missile is a smattering of electronics and a hand grenade, I think they'll tighten the screws. It might start with parts, but the stuff you need to make a UAV/missile is very similar to what goes into many many other things (eg. gyroscopes, accelerometers)

Re:Make darn sure the Feds don't mind!

[w0mprat]

Someone has already tried a DIY payload carrying cruise missle powered by pulsejets and GPS + RC components, to try and prove exactly that point.

http://www.interestingprojects.com/cruisemissile/

It was remarkable not only that it was exceedingly cool, and perhaps the ultimate DIY hack ever, but that it flew right in a legal sh1tstorm before it even took off. This, in a country (NZ) with relatively deregulated airspace.

The result is the government really did not like this, and moved to stop him actually testing this, including some pretty underhand ways of shutting him down (threatening to call in all his Tax debt all at once). As a result he got some very high profile prime time publicity in this country at least. Basically his point was, anyone could do this, and he set out to prove just that. Rather successfully. But this fellow is not exactly your average terrorist but a rather a patent-holding backyard engineer. I still don't think even highly resourced terrorists would go down this route, so perhaps he wasn't right after all, and was just asking for trouble.