Subject:
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Re: 9V batery box (6 AA) - pressed too much
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Newsgroups:
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lugnet.technic
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Date:
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Fri, 7 Oct 2005 13:20:38 GMT
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Viewed:
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3855 times
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In lugnet.technic, Mark Bellis wrote:
>
> The battery box switch is designed so that if you press on both sides at once,
> nothing will happen. The switch deliberately short circuits the motor output
> when neither side is pressed.
>
> If you have one side clicked 'on' and gently press the other side, it is
> possible to get a simple open circuit, letting the motor float to a stop rather
> than be shorted by the switch moving to the 'off' position.
>
> I think it's part of the design that is meant to discourage rough handling by
> the switches being over-pressed.
>
> You can press gently to get a "go until released" function or you can press till
> it clicks and get a "go until I press the other side" function, but if you press
> harder continuously you get no power because it's not designed to be used that
> way.
>
> Mark
Thanks Mark.
Could you expand on : "its not designed to be used that way"
I actually discovered this when I tried to replace the red button with a dual
set polarity switch for these robot games:
http://news.lugnet.com/org/ca/rtltoronto/?n=14594
MY simple idea was to use a beam along one edge of the battery box, and use it
to always hold down the switch. It would seem, that using this method to hold
down a switch is "too much."
has anyone found a more elegant way to hold down a battery box switch?
thanks
Chris
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Message has 2 Replies:
 | | Re: 9V batery box (6 AA) - pressed too much
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| (...) I wouldn't call it elegant, but it works. I used a pair of those egg shaped cams set at right angles on the same shaft, one over each battery box button. With both cams at 45 degs, neither button is pressed. With + and - 45 deg drive to the (...) (19 years ago, 7-Oct-05, to lugnet.technic)
| | | Re: 9V batery box (6 AA) - pressed too much
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| (...) I've never found in necessary to do more than let them hold themselves. If I'm worried about the switch being unpressed, I'll build something over the top, to make sure they won't get hit elsewhere. Steve (19 years ago, 7-Oct-05, to lugnet.technic)
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Message is in Reply To:
| | Re: 9V batery box (6 AA) - pressed too much
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| (...) The battery box switch is designed so that if you press on both sides at once, nothing will happen. The switch deliberately short circuits the motor output when neither side is pressed. If you have one side clicked 'on' and gently press the (...) (19 years ago, 7-Oct-05, to lugnet.technic)
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