|
[DPRG] R/C heli technology
Subject: [DPRG] R/C heli technology
From: Glenn Pipe
ggpipe at yahoo.com
Date: Mon Jun 11 20:37:47 CDT 2007
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
_______________________________________________
DPRGlist mailing list
DPRGlist at dprg.org
http://list.dprg.org/mailman/listinfo/dprglist
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://list.dprg.org/pipermail/dprglist/attachments/20070611/86be31ce/attachment-0001.html
More information about the DPRG mailing list
|
