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I'm not sure there is much interest but here is a video showing the new 1000mm Quad carrying a video/still camera payload and the resulting video from 120 feet:
Flying Quad VIDEO And here is a sample still shot: ![]() Mike |
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OK, more info. Looked on there site and didn't see it.Bud
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Bud,
I assume you are asking about the special Brushless PWB I used: Qty 1 Dammar Brushless PWB - $ 375 (MDammar@spectrolutions.com) Dammar does not list this board on his Spectrolutions website. It is something special that he is making available to experimenters who wish to build a custom quad copter (if there is enough interest). You have to email him for details. Mike |
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Quote:
All I have ever wanted has been such a machine as you so vividly demonstrate. As you know there are many machines of a similar nature "doing the rounds" and I have a kit for such a machine ie the XUFO german designed quadrocopter complete with the latest X*ACC module which apparently will improve stability when I finally persuade my colleague to finish off the kit. You have bought this module from Mike Dammar, made the frame with the motors but WHAT THEN IS REQUIRED! as the machine I have has to be programmed with the required firmware and software. Have you yourself had to work out the program for the machine; also how did you come across this module and what information have you obtained from Mike Dammar? How stable is the machine and how resistant to mild wind? Also can the board take more current than you are presently using so that more powerful motors can be used with larger props and a consequent increase in payload. All in all however, a fantastic machine! Best Wishes and kind regards Ted Robinson Cheshire UK |
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Hi Old Man Mike,
Excellent looking QC. Any more information you have will be gladly accepted. I'm currently building the UAVP (www.lipoly.com), but would be very interested in a second machine such as this. Cheers Colin. |
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Quote:
I'll try to answer your questions without getting too verbose: There is nothing more to program or change with the PWB. You just plug in the servo connectors directly from the ESCs into the PWB. You need to solder the three wires from the brushless motors to the three wires of the ESCs and that is it. Since I was the first person to convert the Draganflyer to a brushless design, Dammar allowed me to test and help refine the gyro settings. I asked him to consider selling just the PWB so that experimenters could build their own without having to get involved with the programming and electronics. Quote:
With the camera payload flying as shown in my posted video, the total current averages just under 9 amps (2.2 amps per motor). Considering that these motors have a max current rating of over 13 amps, you see that there is a LOT of margin. I have flown with these motors carrying more than a 2 lb payload which averaged 22 amps (5.5 amps per motor). But I would recommend keeping the payload around 1 lb or less just so there is a good margin in throttle control. Since my camera and mount is less than an 8 ounce payload, I have plenty of margin. I look forward to soon flying a High Def camcorder which weighs 1 lb. I don't know of any real limit with the PWB for even higher power motors since the motors/ESC connect directly to the battery. Thanks again for you comments. Mike |
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Last edited by Old Man Mike; Nov 08, 2007 at 05:32 PM.
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Quote:
Thanks. I hope my previous posts provided more info. I will try to show some additional details on the frame design if people are interested. And the UAVP is also quite interesting to me since I have an engineering background and enjoy digging deeper into the design. I have two UAVP boards on order so that I can play with them in my 1000 quad frame and using the same ESC/Motor combination. I really do not understand why people are using such expensive ESCs and Motors when the low cost units seem to work so well. Mike |
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Thanks Mike,
I would certainly be interested in seeing more of your frame design. OT: I see that you appear to be fairly serious ham radio operator as well, by the looks of the antenna in the back yard. I've just got back into it after many years of being off air. 73's Colin ZL2ARL |
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Thanks for showing such detailed and close up photos of your frame. I was wondering how one would mount a TowerPro motor and you gave me the answer!
In one of your videos it looks like you have some sort of foam mounted on each arm and underneath the frame. Could you provide some photos and more information about what you are using and how it is mounted? I'd also be interested in more information about how you built the little cage around the electronics in the center of the frame. Also, I'm curious about what other sensors the PWB uses. What type of gyros does it use? Are they the ADXRS300's like the UAVP, MLX90609's, or something else? |
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Thanks for the detailed reply.Quote:
Yes, it is the programming side which terrifies me! and if that is taken care of it certainly does give me food for thought. The machine (kit) I have bought at present ( which incidentally must have cost some $1000 plus) and am trying to persuade my colleague to build after which I have to load the programs via downloads is the XUFO quadrocopter developed by the German guys. The base is much smaller than the one you suggest and I do understand that bigger is better as far as stability is concerned. Anyway, thanks again for a very interesting insight Best Wishes and Regards Ted |
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Quote:
The bumpers and camera mount are made from a kid's foam stick used to play in a pool. They sell it in 6 foot lengths for a few dollars. I use soft stretch elastic (used in clothes) tied to nylon washers which slide over the aluminum tubing. The mount is then suspended just below the Quad to reduce any vibrations from the motors. The pictures show provide enough detail on how it is used. During the early development period, I had several crashes from 100 feet and higher without damage to the camera. ![]() ![]() ![]() ![]() The RollCage is made from 0.025 inch aluminum sheet cut into two strips 0.7" wide. The strips are bent to shape and secured with 4 screws and a center screw. Not much to it but it does an excellent job protecting the PWB and still allowing the TI sensors a clear view. The Gyros are labeled as ENCO5EA9 but I have no details. Mike |
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Are you using your own receiver? If I purchased something like this, I would like to use my DX7.Bud
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Hi Mike,
Thank you for the detailed reply! I like the innovative use of the foam sticks and elastics. I'll have to consider using something like that to shield a camera when I get one in the air. It sounds like it provides plenty of cushioning should a fall occur! |
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