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  1. Home
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  3. AM612 PIR can

AM612 PIR can

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  • W Offline
    W Offline
    waspie
    wrote on last edited by
    #1

    Did anyone ever find a PIR sensor that could handle voltages below 2.8v without going wonky?

    I use CR123a batteries with my PIR and I recently had to replace one. It was at the moment I realized I had at least of year of life out of this one and it had only then dropped to 60%.

    If there was another sensor readily and cheaply available it could be of some interest although I'm pretty content with a year of life.

    C 1 Reply Last reply
    1
    • W waspie

      Did anyone ever find a PIR sensor that could handle voltages below 2.8v without going wonky?

      I use CR123a batteries with my PIR and I recently had to replace one. It was at the moment I realized I had at least of year of life out of this one and it had only then dropped to 60%.

      If there was another sensor readily and cheaply available it could be of some interest although I'm pretty content with a year of life.

      C Offline
      C Offline
      chey
      wrote on last edited by
      #2

      @waspie Have you tried something like this?

      https://www.adafruit.com/product/4667

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      • mfalkviddM Offline
        mfalkviddM Offline
        mfalkvidd
        Mod
        wrote on last edited by
        #3

        BL412 (the adafruit link) is rated for 2.7V minimum.

        However, the BS412 is rated for 2.0V minimum. Maybe that's a good candidate?

        W 1 Reply Last reply
        1
        • mfalkviddM mfalkvidd

          BL412 (the adafruit link) is rated for 2.7V minimum.

          However, the BS412 is rated for 2.0V minimum. Maybe that's a good candidate?

          W Offline
          W Offline
          waspie
          wrote on last edited by
          #4

          @mfalkvidd said in AM612 PIR can:

          BL412 (the adafruit link) is rated for 2.7V minimum.

          However, the BS412 is rated for 2.0V minimum. Maybe that's a good candidate?

          nice find!
          and 11ua, a little lower than the 612. Might have to try one of these some day

          @chey I really never did much looking around. As I said, it wasn't really much of an issue. The first PIRs I built are having their batteries die just now. I started down this road with the PIRs about 2 years ago - so that's about how long they've been lasting as-is. :)

          C 1 Reply Last reply
          1
          • W waspie

            @mfalkvidd said in AM612 PIR can:

            BL412 (the adafruit link) is rated for 2.7V minimum.

            However, the BS412 is rated for 2.0V minimum. Maybe that's a good candidate?

            nice find!
            and 11ua, a little lower than the 612. Might have to try one of these some day

            @chey I really never did much looking around. As I said, it wasn't really much of an issue. The first PIRs I built are having their batteries die just now. I started down this road with the PIRs about 2 years ago - so that's about how long they've been lasting as-is. :)

            C Offline
            C Offline
            chey
            wrote on last edited by
            #5

            @waspie I like it when people come back and share their experience. It's helps newbies like myself get direction in our own projects. So thank you :)

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