Subject:
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Re: Need help with bumpers connected to the HB
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 23 May 2001 23:34:36 GMT
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Viewed:
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1561 times
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Hello,
Can you describe more about "HB turns itself off ?"
Does the HB reset itself?
The analog inputs for HB have pull-up resistors. This pull-up resistor may
cause the problem.
Thanks.
Patrick Hui
http://www.RobotStoreHK.com
----- Original Message -----
From: "Haberlag" <bhaberlag@compuserve.de>
To: <lugnet.robotics.handyboard@lugnet.com>
Sent: Thursday, May 24, 2001 2:29 AM
Subject: Need help with bumpers connected to the HB
> Hi, I've got a problem in getting started with the Handy Board. I'd like • to
> connect a bumper detection circuit to the analog0 of my HB. But when I
> connect the bumper circuit to my HB , the HB turns itself off. Can anybody
> help me? Any help would be really appreciated!
>
> I've taken the circuit from the book "Mobile Robots: Inspiration to
> Implantation"(Loseph L. Jones, Anita Flynn). For somebody who hasn't got
> this book I tried to describe as well as possible this circuit.
>
> Bumper circuit description:
>
> From +5V to Gnd are 3 resistances (2.2K ; 1.2K ; 1.2K) connected in • series.
> Two of three 47K resistances are wired from the nodes between the three
> resistances to the 5V pin of each micro-switch. One 47K is from the node
> between the 2,2K to +5V.
>
> Each mico-switch is wired up like this:
> (the left side is where the lever is fasted to the plastic case)
>
> left pin to signal
> middle pin to Gnd
> right pin to 47K resictance (to +5V)
>
>
> Thanks and best regards,
> Jan
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Message is in Reply To:
 | | Need help with bumpers connected to the HB
|
| Hi, I’ve got a problem in getting started with the Handy Board. I’d like to connect a bumper detection circuit to the analog0 of my HB. But when I connect the bumper circuit to my HB , the HB turns itself off. Can anybody help me? Any help would be (...) (24 years ago, 23-May-01, to lugnet.robotics.handyboard)
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