I was wondering if anyone else had built a tricopter or quadrotor? Got some parts lying around for it but its well down on my TODO list. Was wondering if anyone else had played with one.
For the price seams like a decent low cost option for a basic accelerometer setup with a built in micro. AVR on board with ISP so easy to customise and play with. Would probably get one of their cheap frames initially as well.
Joined: 17 Jun 2004
Posts: 1459
Location: Brisbane
I have been playing with a MultiWii setup for several months but didn't have an airframe until today. I have a V2 Paris board from www.multiwiicopter.com with a clone wii+ and a analog accelerometer that the pick-and-place machine rejected at my old job. I have been playing around with a custom V1.7 firmware and bluetooth serial adapter to adjust setting using the android app. I have been meaning to get the V1.8 firmware going but I had to change jobs so have been busy.
I have been slowly raising funds for the rest of the parts but its a low priority. Thanks for some xmas pressies I am almost ready to get airborne. just need some mounting hardware, props and battery. Some higher rated BESCs would be nice too. The trouble is I need 4 of everything.
The hobby king board is a direct copy of the KKopter board. It is a very nice, basic setup but lacks the customisation that the MultIWii allows. It uses 3 gyros from the HK401b and no accelerometers. no auto leveling just stabilizing. _________________ Get Some!!!
Secretary of the Queensland Robotics Sports Club inc.
Sun Dec 25, 2011 8:25 pm
kkeerroo Experienced Roboteer
Joined: 17 Jun 2004
Posts: 1459
Location: Brisbane
Not flying yet, just a few hops. I'm waiting for a new battery. _________________ Get Some!!!
Secretary of the Queensland Robotics Sports Club inc.
Wed Jan 04, 2012 10:18 pm
Philip Experienced Roboteer
Joined: 18 Jun 2004
Posts: 3842
Location: Queensland near Brisbane
You will have to bring it to the next event you attend. _________________ So even the rain that falls isn't actually going to fill our dams and our river systems
Thu Jan 05, 2012 3:42 am
kkeerroo Experienced Roboteer
Joined: 17 Jun 2004
Posts: 1459
Location: Brisbane
now this is skillful flying _________________ Andrew Welch, Team Unconventional Robotics
Wed Apr 04, 2012 8:11 pm
Nick Experienced Roboteer
Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
I'd certainly like to build one - there is still too much on my to-do list though. One question: Does anyone know why there are no quadcopters built using ducted fans meant for EDF planes? They are much more efficient than the open blades normally used and I saw a video of an expensive industrial quad that had EDF-like cowls around the blades for better lift. The only reason I could think of was the noise.
Wed Apr 04, 2012 8:27 pm
dyrodium Experienced Roboteer
Joined: 24 Aug 2004
Posts: 6476
Location: Sydney
I think this may answer the question and more
Flies good.
EDIT: ok, it's not actually ducted fan. My bad...
Wed Apr 04, 2012 8:32 pm
Nick Experienced Roboteer
Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
LOL still a good video. I just researched the question and EDFs work but are very inefficient for a quadcopter design. apparently, the regular copter blades with a small cowl around them are a good compromise.
Yeh the extra weight for Quads probably offsets the increase in efficiency from cowl.
Cowls are usually only on Quads to stop blades running into people or things. _________________ Steven Martin
Twisted Constructions
http://www.botbitz.com
Wed Apr 04, 2012 9:46 pm
kkeerroo Experienced Roboteer
Joined: 17 Jun 2004
Posts: 1459
Location: Brisbane
Electric Ducted Fan units have been used before but give poor control and require relatively large amount of power to fly.
EDF units are designed to move small volumes of air at high speeds. For a multi-rotor aircraft you want to move large volumes of air at low speeds. Ideally you want a low Kv motor turning a large diameter / large pitch prop.
There is a difference between a cowling and a duct. a duct simply guides airflow while a cowl is designed to produce secondary lift as air flows over and into it. _________________ Get Some!!!
Secretary of the Queensland Robotics Sports Club inc.
A very old thread, but this is exactly what I am building next.
How successful was everyone that built one? Did you get any FPV going? Any tips for a newbie?
Cheers,
Mark
Tue Jun 18, 2013 4:50 pm
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