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Power & Energy
Forum Use SPST to trigger a momentary switch
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Use SPST to trigger a momentary switch

uxphil
uxphil over 2 years ago

Hi, I’m new to the forum and a keen, but clueless DIY dad, so expect seemingly silly questions … sorry

I’m building a busy board for my 1 year old son, which will run off a 5V power supply with lots of chunky switches and LEDs etc.

I’ve bought a little Adafruit soundboard that lets you trigger sounds with a momentary switch. 

my question is this:

i have a chunky flip switch that I’d like to turn on a light or something like that, but also play a sound from the sound board when it’s flicked.

any advice how I could use a SPST switch to trigger a momentary switch signal that would trigger the sound to be played?

below some pics of the switches and the sound board (can’t paste links in here) …

Thanks for any advice!

image

image

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  • shabaz
    shabaz over 2 years ago +2
    Hi, I think that sound module will work with a toggle switch, it may just loop the audio. Otherwise if you really want a momentary action like a push-button, then another option is to use toggle switches…
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  • JWx
    JWx over 2 years ago

    you will probably need edge triggered monostable generator - maybe built from some logic gates, maybe IC like 555. But it would require one circuit for each key

    https://www.electronics-tutorials.ws/waveforms/monostable.html

    circuit from NOR gate circuit seems simplest - and from 1 IC you would get two of them (74LS02 - or better something modern like 74HC02  - includes 4 gates) - but the question is if the final circuit wouldn't be too complicated?

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  • JWx
    JWx over 2 years ago

    you will probably need edge triggered monostable generator - maybe built from some logic gates, maybe IC like 555. But it would require one circuit for each key

    https://www.electronics-tutorials.ws/waveforms/monostable.html

    circuit from NOR gate circuit seems simplest - and from 1 IC you would get two of them (74LS02 - or better something modern like 74HC02  - includes 4 gates) - but the question is if the final circuit wouldn't be too complicated?

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