Button to press switch in enclosure

[dpbarry]

Hi Folks.

Apologies for asking what may appear to be a stupid question. Not sure if it’s covid brain fog or whatever but ive a circuit board I want to mount inside an enclosure. It has a small on/off switch but I want to control it from a button on the outside of the enclosure - a kind of spring loaded extension that when i press on it, it will touch the switch and switch it either on or off.

For the life of me, I don’t know what to call it on Google/Bing to search for such an ‘extension’

This is the board I have. Switch is on bottom right. I’m using it to link to a computer PSU to give me the 3.3, 5 and 12 volts at banana sockets on the enclosure

GeeekPi 24/20-pin ATX DC Power Supply Breakout Board Module Adapter, Screw Terminal Block Breakout Module for Computer PC : Amazon.co.uk: Computers & Accessories

Buy

www.amazon.co.uk

any assistance greatly appreciated

Declan

 

[danadak]

Spring loaded pin ....?

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Cabinet pins -

Regards, Dana.

 

[Pommie]

Do you have a schematic of that board?

Mike.

 

[dpbarry]

Spring loaded pin ....?

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

Cabinet pins -

View attachment 136651



Regards, Dana.

Cheers Dana. seems so simple now

 

[dpbarry]

Do you have a schematic of that board?

Mike.

Hi Mike

unfortunately not. I suppose I could meter it out and see which pins on the pub switch actually switch the module on and modify it with a fly lead switch.

 

[rjenkinsgb]

The typical "official" names are such as an "Extended reset operator", but the industrial parts tend to have ludicrous prices!

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I'd look for some form of modular pushbutton (that has interchangeable contact assemblies) and add your own plastic rod extension to it, something like one of these:

Pardon our interruption...

www.ebay.co.uk

Unscrew the contact block and you have a smart looking button you can attach an extension to.

 

[dpbarry]

Cheers folks. Many thanks for the assistance. Much appreciated

Declan

 

[JimB]

I'd look for some form of modular pushbutton (that has interchangeable contact assemblies) and add your own plastic rod extension to it, something like one of these:

Pardon our interruption...

www.ebay.co.uk

Unscrew the contact block and you have a smart looking button you can attach an extension to.

Or, why not just wire one of the new switch contacts in parallel with the contacts of the switch on the breakout board?
That would save all the mechanical fiddling to make the push rod line up between to new PB and the switch.

JimB

 

[dpbarry]

Or, why not just wire one of the new switch contacts in parallel with the contacts of the switch on the breakout board?
That would save all the mechanical fiddling to make the push rod line up between to new PB and the switch.

JimB

Actually, it’s something I may look at. Just looking to see what type of latching switch it is. It has 6 pads on it - surface mounted to board.

Declan

 

[Pommie]

Are you sure it's a latching switch? Many devices use a push button and the latching is done by other parts of the circuit. Metering it without power will tell you if it's latching or not.

Mike.

 

[Nigel Goodwin]

Are you sure it's a latching switch? Many devices use a push button and the latching is done by other parts of the circuit. Metering it without power will tell you if it's latching or not.

Mike.

While it might not be a latching switch, it looks like a very common type of one - you see them a lot, and do have 6 pads.

 

[rjenkinsgb]

Are you sure it's a latching switch?

The amazon link photos show a legend next to the switch, with it depressed for on and released for off.

However, the board has the PSON connection brought our to a screw terminal already - so an external on/off switch could be wired between that and 0V/GND, & just ignore the on board one, leaving that off??

 

[Pommie]

Yes, can see it now.

Mike.

 

[dpbarry]

The amazon link photos show a legend next to the switch, with it depressed for on and released for off.

However, the board has the PSON connection brought our to a screw terminal already - so an external on/off switch could be wired between that and 0V/GND, & just ignore the on board one, leaving that off??

Sometimes the easiest options are the ones staring you in the face! Should have read the silkscreen legend properly. Tested it out and it works. Obviously needs to be a latching switch.

cheers folks