Alt-BEAM Archive
Message #03137
To: Wouter Brok w.j.m.brok@stud.tue.nl, beam@corp.sgi.com
From: Sharon Williams swilliam@cadvision.com
Date: Mon, 10 May 1999 07:41:41 -0600
Subject: [alt-beam] Re: any other ideas?
maybe if you used a D1 SE but swapped out the capacitor and put in the
battery in its place. might need some modifacation, i dont know.
-Jeremy Williams
At 08:31 AM 5/10/99 +0200, Wouter Brok wrote:
>Hello,
>
>For my walking solarpowered (batterycharging) phototropic robot I need a
>little circuit that does the following:
>When the input of the circuit goes high (when there is enough light to
>charge the battery) the output should be low (the robot shouldn't walk),
>but when then the input goes low again (because the light is gone) the
>output should get high as to give the robot a signal that it should start
>seeking for new light. This high output should be maintained until there is
>enough light again or until the battery runs out.
>
>I have a little drawing of a circuit attached (R2 could also be the
>leakage-resistance of the capacitor), which I made up, but I was wondering
>if anybody (you maybe, Wilf) had another, better idea?
>
>Thanks already
>
>Wouter BrokContent-Type: image/gif;
Attachment: D
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