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[DPRG] R/C heli technology
Subject: [DPRG] R/C heli technology
From: dpa
dpa at io.isem.smu.edu
Date: Mon Jun 11 23:33:04 CDT 2007
Hi,
Glenn,
Great, thanks! I especially like the water cooled version.
I also found this link to parts and pdfs:
<http://www.lsicsi.com/brushless_dc.htm>
best,
dpa
> Yes David there are hobby bushless controllers that reverse. The R/C cars and boats are starting to pick up on brushless too.
>
> Here are a few links to check out:
>
> http://www.teamnovak.com/products/esc/gtb/index.html
> http://www.hobby-lobby.com/boatcont.htm
> http://www.castlecreations.com/products/barracuda-80.html
> http://www2.towerhobbies.com/cgi-bin/wti0093p?&C=MJE&P=0
>
> Some are kinda pricey but brushless is considered high end.
>
> Thanks,
>
> Glenn
>
> ----- Original Message ----
> From: dpa <dpa at io.isem.smu.edu>
> To: dprglist at dprg.org
> Sent: Monday, June 11, 2007 4:09:13 PM
> Subject: [DPRG] R/C heli technology
>
> Howdy,
>
> Did my first hover today with my new helicopter, (a TREX-450 with a
> Spektrum DX7 radio, for those in-the-know :)
>
> This is some seriously cool technology. The gyro itelf is about the
> size of a nickle, and includes an 8-led "level meter" with 5 green
> leds for programming modes and a push button for user input! The
> motor is brushless with a very nifty speed controller that uses sound
> output for programming feedback and the R/C link for programming input,
> all based on timing, for things like slew rates, gain controls,
> and gain limits. Extremely nice.
>
> The whole thing lights up like a Christmas tree and sings like R2-D2
> during powerup. I love it!
>
> The heli uses a 2200 mAh 11.7v LiPo battery pack about the size
> of a small Snickers candybar, that charges in just one hour.
>
> Once again I think we robot folks have a great ally in the R/C car/
> plane and now helicopter crowd. Seems like one of these "heading
> hold" gyros might be just the ticket for odometry+gyro robot
> navigation, indoors or ourdoors.
>
> Does anyone know of a brushless speed controller that can be reversed?
>
> The helicopter, of course, just runs the motor in one direction and
> reverses the pitch of the blades, but a robot needs to be able to
> reverse its motors in software. The speed controller has three
> leads and reversing any two of them reverse the direction of the
> motor. That suggests that it would not be difficult to build a
> controller that can reverse the motor. Anybody know if such a
> thing exists?
>
> best,
> dpa
>
> _______________________________________________
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> DPRGlist at dprg.org
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>
>
>
>
>
> --0-1515554776-1181612267=:64400
> Content-Type: text/html; charset=ascii
>
> <html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">Yes David there are hobby bushless controllers that reverse. The R/C cars and boats are starting to pick up on brushless too.<br><br>Here are a few links to check out:<br><br><span><a target="_blank" href="http://www.teamnovak.com/products/esc/gtb/index.html">http://www.teamnovak.com/products/esc/gtb/index.html</a></span><br><span><a target="_blank" href="http://www.hobby-lobby.com/boatcont.htm">http://www.hobby-lobby.com/boatcont.htm</a></span><br><span><a target="_blank" href="http://www.castlecreations.com/products/barracuda-80.html">http://www.castlecreations.com/products/barracuda-80.html</a></span><br><span><a target="_blank"
> href="http://www2.towerhobbies.com/cgi-bin/wti0093p?&C=MJE&P=0">http://www2.towerhobbies.com/cgi-bin/wti0093p?&C=MJE&P=0</a></span><br><br>Some are kinda pricey but brushless is considered high end.<br><br>Thanks,<br><br>Glenn<br><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">----- Original Message ----<br>From: dpa <dpa at io.isem.smu.edu><br>To: dprglist at dprg.org<br>Sent: Monday, June 11, 2007 4:09:13 PM<br>Subject: [DPRG] R/C heli technology<br><br><div>Howdy,<br><br>Did my first hover today with my new helicopter, (a TREX-450 with a<br>Spektrum DX7 radio, for those in-the-know :)<br><br>This is some seriously cool technology. The gyro itelf is about the<br>size of a nickle, and includes an 8-led "level meter" with 5 green <br>leds for programming modes and a push button for user input! The <br>motor is brushless with a very nifty speed controller that uses sound<br>output for programming
> feedback and the R/C link for programming input,<br>all based on timing, for things like slew rates, gain controls,<br>and gain limits. Extremely nice.<br><br>The whole thing lights up like a Christmas tree and sings like R2-D2<br>during powerup. I love it!<br><br>The heli uses a 2200 mAh 11.7v LiPo battery pack about the size<br>of a small Snickers candybar, that charges in just one hour. <br><br>Once again I think we robot folks have a great ally in the R/C car/<br>plane and now helicopter crowd. Seems like one of these "heading<br>hold" gyros might be just the ticket for odometry+gyro robot<br>navigation, indoors or ourdoors.<br><br>Does anyone know of a brushless speed controller that can be reversed?<br><br>The helicopter, of course, just runs the motor in one direction and<br>reverses the pitch of the blades, but a robot needs to be able to<br>reverse its motors in software. The speed controller has
> three<br>leads and reversing any two of them reverse the direction of the<br>motor. That suggests that it would not be difficult to build a<br>controller that can reverse the motor. Anybody know if such a<br>thing exists?<br><br>best,<br>dpa<br><br>_______________________________________________<br>DPRGlist mailing list<br>DPRGlist at dprg.org<br><a target="_blank" href="http://list.dprg.org/mailman/listinfo/dprglist">http://list.dprg.org/mailman/listinfo/dprglist</a><br></div></div><br></div></div></body></html>
> --0-1515554776-1181612267=:64400--
>
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