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How do i make use of the output of a PIR sensor to toggle a switch? Answered

Currently I had build a board according to this schematic, http://www.massey.ac.nz/~wlxu/reports_pdf/HealthArticle2002.pdf . I was told that a edge triggering monostable 555 timer will allow me to have a stable high/low signal. Problem is how do i make use of the output to generate the switch from the edge triggering 555 timer?

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iknowvations (author)2012-01-03

Instead of 555 go for RS toggle circuit using CD 4013. That will give you better performance.

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Acronymm (author)iknowvations2012-01-05

Thank you for replying, but i've tried the comparator method since I'm running out of time.

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iknowvations (author)Acronymm2012-01-06

Ok. That is good. But whenever you get time, try CD 4013. It is very robust IC.

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steveastrouk (author)2011-12-30

You really need a comparator, not an edge trigger to clean up the input first.

Steve

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Acronymm (author)steveastrouk2012-01-05

Thanks for your reply! I've tried adding a comparator and it works.

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steveastrouk (author)Acronymm2012-01-05

Glad it helped. Please mark my answer as "best Answer" - it means others will be able to search for the question.

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