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 Robotics / Handy Board / 7407
7406  |  7408
Subject: 
Re: Battery Capacity
Newsgroups: 
lugnet.robotics.handyboard
Date: 
Tue, 8 Feb 2000 09:42:21 GMT
Viewed: 
4595 times
  
William Bain wrote:
> 
> I power my HB with an 8-AA-cell, 500 mAH Panasonic battery,
> soldered together by Digikey (I think it's the one listed in
> the HB Tech Ref) and it has no trouble at all driving a couple
> Lego motors. My robot is pretty heavy, too, with sonar, a color
> video camera, and a video transmitter.

I am using 8-NiMH-AA-cells, 1100 mAh each, without any problems.
For German Handyboard users: www.reichelt.de sells either single
sells or a soldered pack of batteries. Actually you can even get
upto 1700 mAh-cells (no experience with those cells). Instead of
using the recommended 500mA DC adapter, I changed to 800mA.
> 
> However, I'm using the Lego gear motors, which may be more
> efficient than the old style of Lego motor, and I gear them
> down even more. Have you tried gearing your motors down? Maybe
> you aren't getting enough torque and that's causing your motors
> to stall.

Same motors are used by me and I geared them down, too.
> 
> I really recommend getting the soldered batteries from Digikey.
> Using a battery holder with single cells never worked very
> reliably for me.

No problems with single sells.

Hope this helps.

Dirk



Message is in Reply To:
  Re: Battery Capacity
 
I suppose that maybe your NiCd cells are just nearing the end of their useful life. Either that, or you have a wiring problem somewhere in the power circuit. Also, it's generally not a good idea to mix different types of cells (different capacities) (...) (27 years ago, 7-Feb-00, to lugnet.robotics.handyboard)

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