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Arduino based auto trigger spray keeps cats at bay

Posted on Tuesday, April 8th, 2014 in Arduino, hacks, open source, sensors by the machinegeek
This entry was posted on Tuesday, April 8th, 2014 at 12:01 am and is filed under Arduino, hacks, open source, sensors. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

7 Responses to “Arduino based auto trigger spray keeps cats at bay”

  1. Max says:

    It’s somewhat amusing how the Arduino between the PIR sensor an the motor is entirely redundant…

  2. Sleepwalker3 says:

    Not entirely, it does keep the motor going for a few seconds after being triggered, but yes you could do this without the Arduino and just using a few extra components.

    • Max says:

      Ah, but precisely therein does the ludicrousness lie. These modules already do hold their output active a variable amount of time after being triggered; the better versions of this sensor come with the relevant two pots already installed (mine did), but if you look closely on the vid, at 1:20 the unpopulated “Delay” pot footprint is clearly visible, helpfully labeled as such. And it does _exactly_ what the Arduino is set up to…

  3. Pat Harding says:

    This is awesome! Now I can stop the neighbors from crapping on my lawn. Just need to step up the pressure to something like a water mains hose :p

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