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Desk banging sensor scheme?

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    Desk banging sensor scheme?

    Anyone done something like use a vibration sensor to track cumulative events? I'd like to implement something that detects banging on a desk surface. As in, kids banging on the desk out of frustration while gaming. Yeah, parenting is fun sometimes. I could hard-mount something to the underside of the desk to get a solid signal. I'd want to avoid mis-fires for unrelated activity like walking around, doors closing or passing trucks. It'd be interesting to tie this into discord/steam or other gaming networks as an additional indicator.

    I was going to suggest a Geophone but these days you can purchase an Ebay "Vibration Sensor Trigger Board Relay Switch Module for DIY Alarm Time System" which is what I used for my DIY'd brick mailbox many many years ago.

    I wrote about using this sensor here a few years back.

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      If you already have or don't mind adding a 433Mhz receiver to your setup:



        Originally posted by 123qweasd View Post
        If you already have or don't mind adding a 433Mhz receiver to your setup:
        I do have an RFXCom that I never used much... though I recall it being tedious to configure/use. And I'm trying to move things into VMs, and USB raises... complications in that regard.


          Heh, an earthquake sensor would be a fun way to approach it.


            This zigbee aqara sensor should work well:

            I have one mounted on a safe door to send me email anytime it's opened, but it also picks up vibration if I bump the safe as well. Cheap and effective, and works well with jowihue's zigbee PI.


              Easy Peasy.

              I have one of these attached to a basket that I need to check every day. If it moves, I know it and I have a counter to count how many times it gets moved. Takes 5 minutes to set add to your Z-Net and create a counter for it.