[Robotgroup] Two questions

[Def Egge]

Thanks, Vern.

What about your charger?



At 14:52  2007-11-05, you wrote:
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 >Def Egge wrote:
 >> Rechargeable batteries:
 >
 >I've used a lot of AA rechargeables, mostly 
NiMH in the 1600-2500ma
 >hour
 >range. Haven't seen much difference in the 
performance of the "name
 >brand" (i.e. "Duracell") or the "house brand" 
(i.e. Whatever is on the
 >
 >shelf at Frys) rechargeable. Most of the 
difference seems to be in the
 >
 >Mah ratings as to how long they last in a given 
setting (my Canon A560
 >
 >is a battery eater, as is Kym's Sony camera). I also use them in
 >robotic
 >projects as the BOEBOT and other systems like that use 4xAA for a
 >power
 >source. Lots of the kids toys (game boys and 
robotic dolls) use AA as
 >well.
 >
 >I tried getting some AAA NiMH batteries for use with some handy
 >talkies,
 >but I noticed an unsettling tendency of *someone* in my household
 >putting non-rechargeable AAA into the NiMH 
charger on occasion (hmm
 >whats that smell..?) :) I think this may be because the text is so
 >small
 >on the batteries. I ended up just using regular AAA's most of the
 >time.
 >I don't have many items that require D cells 
'cept for flashlights and
 >
 >those are not good candidates for rechargeables 
if you don't plan to
 >run
 >them empty and recharge them regularly. NiMH 
will "self discharge" in
 >my
 >experience:
 >
 >http://en.wikipedia.org/wiki/Nickel_metal_hydride_battery#Self-dischar
 >ge
 >
 >Things that use 9v around my house are usually things like clock
 >backups
 >and smoke detectors. Again not good candidates for rechargeables.
 >
 >> Stereo computer speakers with subwoofer:
 >
 >I've used a set of Altec Lansing ATP3's for about 4-5 years now:
 >
 >http://www.smartbuy.ro/cs-photos/products/original/13796.jpg
 >
 >Bought them at Compuseless for about $80.00 
IIRC. They don't make that
 >
 >model anymore, but the successor seems to be the VS4121:
 >
 >http://www.alteclansing.com/product_details.asp?pID=VS4121
 >
 >Seems for about that same price point. Mine get 
plenty loud and have
 >what I consider to be good frequency response 
and low end. Some of you
 >
 >may also have seen the Creative Labs speakers I 
have brought to some
 >of
 >the TRG functions. Those also work fine and sound good.
 >
 >I guess the best thing to do is go to one of 
the stores where you can
 >
 >demo the speakers and bring a iPod full of the music you expect to
 >listen to. Connect up each set and see what you think. :)
 >
 >Vern
 >--
 >Vern Graner CNE/CNA/SSE    | "If the network is down, then you're
 >Senior Systems Engineer    | obviously incompetent so why are we
 >Texas Information Services | paying you? Of course, if the network
 >http://www.txis.com        | is up, then we obviously don't need
 >Austin Office 512 328-8947 | you, so why are we paying you?" ©VLG
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-- 

All the best....

Mike