As I progress with my build I am doing research into building my own brushless gimbal frame using spare carbon fibre and control based on the Alex Mos board http://www.simplebgc.com/eng/. I have spent the last week looking at suitable motors.
Looking at Zenmuse and the AM gimbal the idea of flat dc motors was appealing aesthetically yet expensive on the basis of purchasing very good Maxon motors that would not require me rewinding the copper. Most third-party manufactures of complete AM brushless gimbals use these motors. From a DIY perspective 40 GBP (60 USD) is quite expensive.
I also knew that there were potentially better motors out there that have higher resolutions. Ie piezo motors used in autofocus SLR units, engraving machines, medial machinery. The advantage is the higher resolution, response speed and power-saving features. A supplier in the UK of the rotary motor manufactured in Sweden http://www.piezomotor.se/products/rotary/ quoted 1,200 GBP for the 50mNm and 600 GBP for the 80mNm.
However I have now ruled this out as the distributor has informed me that I would require a 4 phase motor driver to control the motors.
Other than using a sub $10 Turnigy low kv/ low profile motors and rewinding the copper has anyone out there found a better alternative high resolution motor for their brushless gimbals?
Comments
@ Erman - who do you use for t-motors? Im after these too...
http://www.x468.com/blog/brushless-gimbal/
Yeah, I'm holding out for Alex's excellent gimbal. I counting on it for my new, 350 size FPV quad, with foldable arms. Rather than underslung though, I'll adapt it to mount out front. Bring it on Jani, I'm keen!
Here next week! :)
Put my order in today for the alex mos board via flyduino.net. Shipping via DHL. Hopefully only two weeks till I get my t-motors.
here it is nice calculator how to rewind motors,just enter number of stator arms and magnet poles,y configuration
http://i.caendle.de/dev/test2/
also i do not understand this post approvment;Your comment must be approved before everyone can see it. WHY?
i am building one myself...all information about simple brushless gimbal can be found here,i sugest using russion version (and translate google)of web page bcs it contains more information
http://www.simplebgc.com/eng/
more information about it is this thread on rcgroups suported by Flyduino and Viacopter.eu
http://www.rcgroups.com/forums/showthread.php?t=1815204
nowdays more and more motors are avalible
http://flyduino.net/Flyduino-GBM4008-021mm-150-Turns-Motor-for-Alex...
http://www.rctimer.com/index.php?gOo=goods_details.dwt&goodsid=... (i rewinded this one myself,still testing but i think it will be able to swing bigger cameras too)
also tiger motors looking good 2208 10 Ohm = 30$
4006 20 Ohm = 48$
Got mine from www.multirotor.co based in Poland. Not sure on shipping outside of EU. But they have the widest selection of T-Motors I have seen online. Responsive to my emails with good customer service. Definitely going to send a high value order for some 4000 series low kv motors when I do my Y6/X8 build.
The Tiger gimbal motors should be here also by the endof next week.
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