Home Forum Hardware Making a clicker

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  • #2867
    Dave K


    Would it be possible to tap into the pulses coming from the tube, as to add a clicker sound to the Radiation Monitor A3.4 ? I would like the device to click on each incoming particle.

    What I would like to know is which point in the circuit (if any) can be used to connect to a simpel amp to drive a piezo.




    Hi Dave, this is a nice question and the answer is YES.

    The PCB’s have been designed with a connector where you can add a clicker. See it in the picture attached.
    I recommend the self oscillating 3V piezo buzzers. Here’s an examples:
    You will also need a firmware upgrade, as by default the digital output pulses on that connector are disabled.



    Old topic, I know, but would a (weather-proof) LED also be possible?


    hi Rob, are you asking for a way to modify an existing unit or is this a question/suggestion for a future hardware revision?



    Hi Radu,
    In my case it would be modifying an existing Model A3.4, if possible.
    As some kind of “in-service” indicator. (thus flashing instead of making the clicking-sound)

    Unfortunately the link to the eBay listing is a dead-end as it is too long ago and no history shown, so I can’t see the technical details (impedance, load etc) of that piezo buzzer.


    Nothing fancy there, really, these were some 3.3V (5V is good too) active buzzers . They are controlled with a NPN transistor so you can use pretty much anything. You can also connect a LED instead. Here is another link: https://www.aliexpress.com/item/33059794164.html and a picture attached.

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