 | | Re: Batteries again
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in theory this can be a problem. in practice, as long as the nicads are occasionally allowed to fully discharge, they'll last for a good long time in fine condition. fred In your message you said: (...) es. (...) (24 years ago, 22-Sep-00, to lugnet.robotics.handyboard)
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| | Batteries again
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As Fred is recommending using nicads due to the constant trickle charge when connected to the mains adapter I have a question regarding the nicad batteries. If the batteries are trickle charged before they are fully discharged (usual practice I (...) (24 years ago, 22-Sep-00, to lugnet.robotics.handyboard)
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| | Re: Possible error in assembly guide.
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Are you getting a good ground???...??? If it works.. then hey! RS232 is +10 to -10 but there is room for slop! +7 to -7 will work too!!!!!!! It just won't drive a cable to the max length of the RS232 spec. Most of the time though people just don't (...) (24 years ago, 22-Sep-00, to lugnet.robotics.handyboard)
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| | Possible error in assembly guide.
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Near the end of the "interface/charger serial circuit" heading of the "Assembling The Handy Board" guide, it says measure the voltage of pin 6 of the MAX232, I did that and got -9.5 which is correct. Then I connected pin2 of j9 and pin6 of max232 so (...) (24 years ago, 22-Sep-00, to lugnet.robotics.handyboard)
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| | Re: nimh batteries
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the issue with nimh is that plain trickle charge is not appropriate. you must remove charge current when the cells are full charge. the HB charge circuit just doesn't do that. i'd really recommend switching back to nicad. fred In your message you (...) (24 years ago, 21-Sep-00, to lugnet.robotics.handyboard)
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