Alt-BEAM Archive
Message #10553
To: beam@sgiblab.sgi.com
From: "Dennison Bertram" dibst11+@pitt.edu
Date: Sat, 19 Feb 2000 22:26:42 -0800
Subject: [alt-beam] Re: walker - a bit better
If they are lithium batteries then it's definitly the batteries. Lithiums
can't take high current draws for very long at all, use alkaline.
dennison
> Thanks for the help, especially Wilf.
>
> So I removed the 7805, and put a 100 and .1 uF filter across power rails.
> Also i put a .1 across each motor, and 1 for both h-bridges. Anyway, the
bot
> walks about a meter, before the LEDs start glowing less bright, and the
> motors also slow down. Eventually the LEDs start flickering and go out
> altogether. The motors also stop. If I power off, and then on again, the
bot
> takes a step and dies. But after about a 10 minute wait, its fine, but
dies
> again after about a metre. Im suspecting battery trouble. They're 2 no
name
> generic lithium batteries, each 3V, put in parallel for 6V total. What do
> you think?
> ______________________________________________________
>
10554 Sun, 20 Feb 2000 22:34:47 EST [alt-beam] Re: walker - a bit better beam@sgiblab.sgi.com Bumper314@aol.com if you say you put them in parallel then that would double the current, not
the voltage
Steve
10555 Sun, 20 Feb 2000 19:37:10 -0800 Direct-Drive LCDs BEAM List Victor Snesarev
> Does anyone know of a source of direct-drive LCD's (the ones used by Lee
> Golden to make LCD name tags
> http://www.geocities.com/leemon1/Bots/LCD/lcdname.htm
> )?
>
> I checked BGMicro's catalog and they don't have any. I searched the web,
> and found Optrex Corp., but there's no ordering or contact info.
>
> If anyone has any lying around, I would like to purchase up to 10 of
> them. Please, contact me in private by e-mail, if you are willing to
> sell some.
>
> Best regards,
>
> Victor
>
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