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Old Dec 02, 2009, 04:23 PM
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Austin, Texas
Joined Apr 2009
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Anyone know where to get small counter rotating props like this?
The smallest I can find are 8" APC props.
I'm looking for something closer to 5"

Thanks,
Brent
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Old Dec 02, 2009, 10:33 PM
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Texas
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Its refreshing to see some new development in the quadrocopter community. Great job sir
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Old Dec 03, 2009, 10:28 AM
Tri-Quad-Hexa-Octo-copters!!
United States, TX, San Antonio
Joined Feb 2007
14,453 Posts
Nice work! Added to my: Quadrocopter and Tricopter Mega Link Index
That is a nice source for the Murata gyros. Good replacement gyro source for the MK v1.3 and X-Stuff boards too Another good source I have found for the Murata gyros and other usable parts is in the Walkera UFO #4 boards: http://www.walkera.com.hk/walkera-uf...er-p-2064.html
Also I would love to know the name of the 3-axis mechanical quad of which you mentioned and show board photos. I have not heard of that one before and am curious about it.
Cheers,
Jim
Quote:
Originally Posted by kapteinkuk View Post
Hello and thank you all!
The frame is from a 8 year old old foam toy quad-rotor that I got for free, still new in the box. It had 3 mechanical gyros (see picture) like the early helicopter gyros. It was not R/C, but had a wire to the controller. It had brushed motors with geared foam propellers
Maybe some of you remember it?
The ESC's is from the same time period, GWS ICS50 2Amp.
I'm not too keen on tri-rotors. I like the symmetry and simplicity of a quad-rotor.
I'm not sure about the $, but it is not much.
Gyro sensors can be extracted from the $16 HobbyCity HK401B gyro (also known as the "GYRD", as written on the case )
http://www.hobbycity.com/hobbycity/s...dProduct=10113
The sensor is a Murata ENC-03M GYROSTAR, see attatched datasheet.
As a nice bonus you also get an Atmel ATMega88 and a 8MHz crystal
Any questions, just ask
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Last edited by jesolins; Dec 03, 2009 at 12:36 PM.
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Old Dec 03, 2009, 12:33 PM
UFO addict
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It would be nice to get a parts materials list that way we can see what it would cost overall to build one.
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Old Dec 05, 2009, 09:39 AM
Quad Whisperer
Joined Jul 2008
942 Posts
Thanks, the toy quad was made in 2000 by wow wee international. The letters UFS is written on the controller. That is all I know about it.

Material list:
3 x HC 401B gyros $48
1 x Atmega 48 $3
3 x 100 uF $1
3 x 33 uF $0.8
2 x 2.2 uF tantal $1
1 x 100 uF $0.3
7 x resistors $1
1 x lm185-2.5 $1
1 x stripboard $10

Total : $66.1
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Old Dec 05, 2009, 09:43 AM
Tri-Quad-Hexa-Octo-copters!!
United States, TX, San Antonio
Joined Feb 2007
14,453 Posts
Thanks.
That is neat historical info. Up until now I thought the 2003 XUFO was the first quad after the 1994 Roswell flyer quad which developed into the Draganflyer
Cheers,
Jim
Quote:
Originally Posted by kapteinkuk View Post
Thanks, the toy quad was made in 2000 by wow wee international. The letters UFS is written on the controller. That is all I know about it.

Material list:
3 x HC 401B gyros $48
1 x Atmega 48 $3
3 x 100 uF $1
3 x 33 uF $0.8
2 x 2.2 uF tantal $1
1 x 100 uF $0.3
7 x resistors $1
1 x lm185-2.5 $1
1 x stripboard $10

Total : $66.1
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Old Dec 05, 2009, 11:32 AM
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Thank you so much for that! You know I had a feeling that thing was made by WOW WEE... I remember clearly seeing it a few years ago. I tried finding it online, but I cant
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Old Dec 10, 2009, 02:00 AM
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Quote:
Originally Posted by jesolins View Post
Thanks.
That is neat historical info. Up until now I thought the 2003 XUFO was the first quad after the 1994 Roswell flyer quad which developed into the Draganflyer
Cheers,
Jim
i had that rosewell flyer, was a foam frame, before it evolved to the draganflyer. this was a great thread to read! very cool!
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Old Dec 10, 2009, 02:01 AM
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Quote:
Originally Posted by dmsgodeep View Post
Anyone know where to get small counter rotating props like this?
The smallest I can find are 8" APC props.
I'm looking for something closer to 5"

Thanks,
Brent
silverlit x-ufo props are smaller then 8" i believe 7-ish you can always cut down the 8"
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Old Dec 10, 2009, 08:52 AM
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Hey how about a tutorial/guide on how to build it for us newbies with not enough electronics expertise
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Old Dec 11, 2009, 07:43 PM
Quad Whisperer
Joined Jul 2008
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If I am going to build another controller, I will try to make a guide then
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Old Dec 11, 2009, 08:52 PM
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That would be awesome! I've been meaning to build my own quad, and this would be the perfect project to get me going and understanding the principles of the subject. I've subscribed to this thread, and I'll be dropping by to see the progress

Thank you kapteinkuk
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Old Dec 12, 2009, 03:38 AM
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Quote:
Originally Posted by 41i3n777 View Post
That would be awesome! I've been meaning to build my own quad, and this would be the perfect project to get me going and understanding the principles of the subject. I've subscribed to this thread, and I'll be dropping by to see the progress

Thank you kapteinkuk
yes i agree, a good project to learn, but dont expect this for AP. def nice and cheap to build for fun to learn, i just might do as well.
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Old Dec 12, 2009, 08:24 AM
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Oh of course not, ap didn't even cross my mind
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Old Jan 22, 2010, 02:37 AM
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Joined Jan 2010
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kapteinkuk,
Good job, really. I like it very much. And thanks for sharing all info. The first idea was: “I must assemble this simple quad”. But after going deeper into things I have a question.
Murata ENC-03M GYROSTAR generates 0.67 mV/deg./sec. ATmega has 2.5V reference and using 10 bit ADC LSB value is 2.5mV. So ATmega can “sense” only 3.7 deg/sec rotation. Is it enough? Or may be I mistaken with calculation?
I wondering, may be I should pay a bit more - $20 and have more accurate gyro from Spark Fun.
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