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PIR sensor period — Parallax Forums

PIR sensor period

umdteam7umdteam7 Posts: 1
edited 2011-04-05 02:24 in Accessories
I noticed that once the PIR sensor is triggered it takes a while for it to go back to a low state. The period is about 2 seconds and I was wondering if there is anyway to decrease the period of the PIR sensor after it is triggered or to force it to a low?

Comments

  • ajwardajward Posts: 1,130
    edited 2011-04-05 02:24
    umdteam7 wrote: »
    I noticed that once the PIR sensor is triggered it takes a while for it to go back to a low state. The period is about 2 seconds and I was wondering if there is anyway to decrease the period of the PIR sensor after it is triggered or to force it to a low?

    That delay is fixed in the innards of the module. The only thing you can change is the supply voltage and that has seemingly no effect on the output pulse. :blank:
    You would have to use some sort of external circuitry to develop a signal of shorter duration.

    Amanda
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