Re: Photopopper answers from Ben
- I was referring to the Photopopper circuit at Beam-online:
(don't click the link to photopopper, just scroll down after circuits page
loads, it's down there a ways)
or just the circuit drawing:
I see the misunderstanding now after seeing Chiu's circuit :)
>Which schematic are you looking at? I went by the one at Chiu's site
>It doesn't show touch sensors, so I just made up what I thought would work.
>No guarantees though :-)
>>From: Ken Hill <hardlock@...>
>>Subject: Re: Photopopper answers from Ben
>>Date: Thu, 20 Apr 2000 15:43
>> Thanks Ben! Making much more sense now!
>> >> (Photopopper drawing shows the wires crossing near 1381s but not
>> >> they are connected at that junction).the motor
>> After further study, I'm thinking that junction must be connected or the
>> PDs wouldn't have any effect on the 1381 (am I right?)
>> >> And lastly, is the RC timer (if that's what it is?) used to keep
>> >> from firing for a while assuring the turn or what?This is
>> >Eh? RC networks? Where? The cap on the trigger of the 1381 is there to
>> >allow different resistances of light sensor to have some effect...
>> >an RC network I guess, but only if you replace the Photodiode with a LDR.constant is
>> >Is this what you're talking about? If so then yes the RC time
>> >affected by light, therefore the popper will be affected by light andwill
>> >either turn away or come towards the light.
>> Oh...I saw the .22 cap and 680k resistor to ground on the feeler switch and
>> thought it was an R/C timeout for the turn action of the switch like other
>> bots I've seen have. I'm learning :)
>> Thanks again; Ken