This is my project, I have been working on it for a couple of months. Is not ready yet and certainly it's not good looking, need more work but here is a video of some features.
Note this is a Steadycam design based on ECILOP ideas. But with a Multiwii board instead of gyros. Multiwii is fixed to the steadycam arm and acts as stab controller. I did a couple of changes in multiwii firmware to add a new mode "STEADYCAM" couse "GIMBAL" mode is just delta angle stab, and I need a PID loop stab + delta angle.
I use high speed servos and rubber bands as actuators couse direct drive is a mess.
The inner frame is connected to main frame by rubber band, so vibration cant pass trough to the FC and Steadycam system.
Here are the arms and main frame:
Fully assembled, note that no camera is attached bellow, instead a use a dead lipo battery as ballast and my bike back light which has a laser similar to a laser level.
Comment by George on January 6, 2013 at 9:24pm Let me know if I understand this correctly. The system is primarily a mechanical steadycam style motion compensation/smoothing system, but the servos engage and act as dampers to reduce oscillation and alter the "home" position to compensate for hexacopter pitch and roll? Then that whole system is rubber band isolated from the motors/airframe to reduce high frequency vibration?
Comment by Alejandro Martin Pirola on January 6, 2013 at 9:34pm George, I couldn't describe it better. Yes you are right. Thank you to write it down in correct words. English is no my native language.
Comment by James masterman on January 6, 2013 at 9:54pm Great to see you have removed the props for testing this hexa. We are still seeing too many hand injuries from accidental motor startup.
Comment by Drone Savant on January 7, 2013 at 6:17am I see that you fly an RCTimer board...
Comment by Alejandro Martin Pirola on January 7, 2013 at 6:31am Drone Savant, yes I do, I have to keep my costs low. Here in Argentina US Dollars gets more expensive everyday.
I can help you about comparation between FC, all I have to say is that it works just fine.
Comment by Alejandro Martin Pirola on January 7, 2013 at 6:32am Sorry, I mean, I can't help you about comparation between FC, all I have to say is that it works just fine.
Comment by Drone Savant on January 7, 2013 at 6:34am I just like to see *successful* users of CC-BY-SA 3drobotics hardware clones. Glad to add you to the list of happy users. Some people act as if ArduFlyer and the folks that use them are evil.
Cheers to your success.
Comment by leonardo.bueno on January 7, 2013 at 7:03am Another problem when buying 3DR APM, at least for us south americans is shipping and taxes... 3DR only ships by Fedex, which is expensive, always taxed and the taxes are higher than when shipped by regular postal services. If I buy a clone from china they will probably provide free shipping and for small packages most of the time its not taxed... the difference will be huge, probably 5x more expensive to buy from 3DR
Comment by Alejandro Martin Pirola on January 7, 2013 at 7:16am Thats right Leonardo, I have awful experiences with Fedex, UPS and DHL. I prefer International Registered Air Mail/Parcel or EMS. I have to pay almost u$s100 taxes for a small FC multiwii of u$s40 when DHL came to my door. Of course you can say no, and walk a long way of paperwork, bureaucracy and waste of time to get that taxes reduced a little bit.
Comment by Drone Savant on January 7, 2013 at 7:20am This is a point that is rarely brought up, yet I have seen it about 3 times this week. Some people will say you are just users of *evil* clone hardware and you won't be supported here. To me however it is funny how you guys have completely legit reasons to be using the clone hardware.
Have you tried asking 3drobotics about their "Low Price Guarantee"? Maybe they can find a way to help offset the cost. http://store.diydrones.com/help_answer.asp?ID=13#21
"It is our commitment to provide you with the best value, at the best price. We value your business and strive to keep our prices low, and SAVE you money!"
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