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Button to press switch in enclosure

dpbarry

New Member
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


any assistance greatly appreciated

Declan
 

danadak

Well-Known Member
Most Helpful Member
Spring loaded pin ....?


Cabinet pins -

1650194217416.png




Regards, Dana.
 

dpbarry

New Member
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.
 
Last edited:

rjenkinsgb

Well-Known Member
Most Helpful Member
The typical "official" names are such as an "Extended reset operator", but the industrial parts tend to have ludicrous prices!


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:


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

JimB

Super Moderator
Most Helpful Member
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:

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

New Member
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

Well-Known Member
Most Helpful Member
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

Super Moderator
Most Helpful Member
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

Well-Known Member
Most Helpful Member
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??
 

dpbarry

New Member
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
 

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