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Topic: Push-Button Switches ON/OFF loud clicking sound
Message: Posted by: Bill08 (Feb 10, 2021 09:10PM)
I've been working on some electronic projects and can't seem to find a small ON/OFF switch (not momentary) that doesn't produce a LOUD clicking sound when pressed. The slide switches aren't too bad - they're quite quiet actually - but the push-button ones I've tried (and I think I need a push-button switch for this idea) are really noisy. The mini rocker-switches also give off a loud click (which is surprising because the larger rocker switches used on wall fixtures can be almost silent) Hopefully there's a push button switch out there that can be activated covertly!
Message: Posted by: magic259 (Feb 12, 2021 06:09AM)
Hi Bill08,

To get round this problem I use a small (silent) momentary push button switch with an Arduino Pro Mini. A simple Arduino programme sketch will allow the momentary switch to act like a toggle switch...i.e push ON / push OFF.

You will need to use a pull up resistor with the switch or add a few extra lines of code to use the Arduino digital internal pull up resistor. Also, depending on the output load, you may need a few extra components to prevent overloading the Arduino....however, nothing too difficult!

Check the internet and you will find a raft of information on this, and programme sketches to do the job.

Hope this helps!

Kind regards,

Message: Posted by: Bill08 (Feb 12, 2021 10:14AM)
Very interesting, thanks so much! Looking forward to giving this a try
Message: Posted by: rhiro (Feb 20, 2021 09:35PM)
The microcontroller suggestion is a great approach, particularly if you need or want the flexibility. Among many other things you can do with a microcontroller, you can program in whatever delay you wish, which is really great for covert triggering. Your spectators can be burning you and see nothing, not knowing you did the dirty work 15 seconds ago.

You could also use one of the microcontroller outputs to turn on a small LED, trigger a silent vibrator, etc. in order to give the performer confirmation that the device is indeed triggered.

If you don't need the flexibility that a microcontroller affords and are just happy with push-on/push-off behavior, maybe use a latching circuit? You could use either a latching relay, or a non-latching relay that's been wired into a latching circuit, so long as the relay is not too noisy for your application. Google "latching relay circuit momentary switch".

Have fun!

Message: Posted by: Bill08 (Feb 21, 2021 12:41PM)
Thanks Ross, much appreciated!