Re: [Gumstix-users] Gumstix/Robostix with ESC and Switching BEC forpower?

[Jay P. <jay...@tr...>]

I have a Verdex XM4, Robostix, NetwifimicrsoSD stack which I'm powering
using a pair of Dimension Engineering's adjustable switching regulators. I
have one supplying +5 for the board stack, and the other supplying +6 for
servos via the Robostix servo power connector (after cutting the jumper
between the two power pins). Source power is a pair of 12V NiMH battery
packs. Works fine for me so far.

 

-----------------------------------------------------

Jay Phillips

Tronix LLC - http://tronixllc.com

 

  _____  

From: gum...@li...
[mailto:gum...@li...] On Behalf Of Brian Joly
Sent: Friday, March 14, 2008 3:30 PM
To: gum...@li...
Subject: [Gumstix-users] Gumstix/Robostix with ESC and Switching BEC
forpower?

 

I will basically be converting an R/C boat to be teleoperated via a wifi
link by replacing the R/C receiver with my
Verdex-xm4/netwifimicrosd/Robostix stack.  I will likely power it with an
electric motor and one main battery.  I'm thinking of using a fairly
standard brushless ESC and brushless motor and probably an A123 Racing
lithium battery over 14V.  I've been doing a bit of research on switching
voltage regulators and power supplies and found some products from
www.dimensionengineering.com <http://www.dimensionengineering.com/>  that
may do the trick.  I should be able to control the ESC by simply connecting
the ESC control lead into an open PWM port on my Robostix.  Power would be
supplied to the Gumstix stack using Dimension Engineering's switching
SportBEC (http://www.dimensionengineering.com/SportBEC.htm).  I think I can
simply make an adapter to plug the BEC's RX lead into the Robostix power
jack.  Using the SportBEC, I can switch voltage between 5V and 6V to
whatever works best.  The SportBEC handles up to 3.5 A current.  Is this too
much current for Robostix? Has anybody ever done anything like this before?
Any ideas will be greatly appreciated.  

 

Thanks,

 

Brian Joly

 

  _____  

Looking for last minute shopping deals? Find
<http://us.rd.yahoo.com/evt=51734/*http:/tools.search.yahoo.com/newsearch/ca
tegory.php?category=shopping>  them fast with Yahoo! Search.