Subject:
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Re: Battery Power and handyboard.
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 19 Sep 2000 12:48:52 GMT
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Viewed:
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1301 times
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i'm not sure if wiring two nicad packs in parallel is a good idea.
the packs would fight each other if either one's voltage varied even
slightly from the other.
i'd recommend either (1) John's initial suggestion of adding a
separate pack solely for motor drive, cutting traces as he mentions,
or (2) replacing the stock pack with a higher capacity one.
get the best nicad you can fit into the case. should be able to get
900 mAh or better.
just don't go nickel metal hydride; those require a different (more
complicated) charging circuit.
fred
In your message you said:
> Jerry,
> I really haven't timed how long a battery charge lasts on the Handyboard but • I
> did add a second 9.6v battery pack for the purpose of isolating the motor
> power from the logic circuit power. I did this to eliminate motor RF
> interference to the sensor readings. As a side effect my time between
> recharges has increased. I had to cut the motor power trace and ad a jumper • to
> the expansion board to power the motors, expansion servos and lego ports. I
> see no reason why you couldn't just add another 9.6v battery pack in paralle • l
> to the original. In this way you would maintain the 9.6v input but effective • ly
> double your ampere hour capacity and your time between recharges.
> John Edwards
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Message is in Reply To:
 | | Re: Battery Power and handyboard.
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| Jerry, I really haven't timed how long a battery charge lasts on the Handyboard but I did add a second 9.6v battery pack for the purpose of isolating the motor power from the logic circuit power. I did this to eliminate motor RF interference to the (...) (24 years ago, 19-Sep-00, to lugnet.robotics.handyboard)
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