Subject:
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Re: sensors input
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 1 Jan 1999 15:53:35 GMT
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Original-From:
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K.L.McKinnon <"KLMCKIN@NOSPAM"@stopspamMAGMACOM.COM>
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Viewed:
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3849 times
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You don't really show your connection to your Handyboard, but I would
suspect that with 16 connectted in parallel, you are probably drawing
sufficient current to drop your voltage below the reset value of the
micro monitor (DS1233? if I remember corretly).
Perhaps try testing the voltage with all in place, and making sure it is
above about 4.5v.
K.L. McKinnon
Michael Toh wrote:
>
> hi everyone,
>
> i have tried to configure a set of sensors used for sensoring the wall in
> the maze.
>
> the circuitry of each of the sensors is:
> +5V +5V
> ----- -----
> | |
> | |
> \ \
> / /
> R1=82 ohm \ \ R2=120Kohms
> / /
> | |
> | |
> ------- |/
> IR emitter \./ |\ IR receiver
> ----- |
> | |
> | |
> --- ---
> GND GND
>
> the IR sensor is sharing the same +5V source and the same ground. but when i
> assembly 16 of them together, the habdyboard will immediately switch to
> reset mode. so i tried to troubleshoot by only connecting the digital sensor
> port and it works. but after about 2mins, the HB switch to reset mode again.
> the same situation happen when i tried with the analog port only.
>
> i like to know what is wrong and how to solve. could it be the wire is short
> or the circuitry is faulty? or could it be the HB cannot supply enough
> current to the sensors ?
> please help! i am really at my wits end.
>
> michael
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Message is in Reply To:
 | | sensors input
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| hi everyone, i have tried to configure a set of sensors used for sensoring the wall in the maze. the circuitry of each of the sensors is: +5V +5V ----- ----- | | | | \ \ / / R1=82 ohm \ \ R2=120Kohms / / | | | | ------- |/ IR emitter \./ |\ IR (...) (28 years ago, 30-Dec-98, to lugnet.robotics.handyboard)
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