PC Modding

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A place for Modders to show off their PC mods that they have made or found online, discuss new mod ideas for their rigs and look for help getting their dream mod project off the ground.

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Use switch as button (alien.top)

submitted 9 months ago by [email protected] to c/[email protected]

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Hi! So, the power button on my case isn't working properly, and I wanted to try to replace it. I accidentally bought some capacitative switches instead of buttons, and I'm wondering if I can do anything with them to make them work.

Thank you!

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[–] [email protected] 1 points 9 months ago (2 children)

What switches do you have exactly?

If by capacitive switches you mean actually capacitive touch sensors mounted to mini PCBs then you usually set their operation by solder bridging some pads. So bridge one pair and you get a momentary switch, bridge a different pair and you get a latching switch.

If so, solder bridge to make them momentary switches - which is what you need for a PC power switch - and enjoy turning on your computer with the power of touch!

Is this what you're talking about?

https://youtu.be/QaoFh1DH51U?feature=shared&t=1568

Otherwise all you need are momentary push switches, or push-to-make switches, wired into a 2-pin female Dupont connector. Nothing special about them, they'e everywhere.

[–] [email protected] 1 points 9 months ago (1 children)

iHaospace 2 Pcs HTTM Capacitive... https://www.amazon.es/dp/B07M5XJFCL?ref=ppx_pop_mob_ap_share

That's what I have. It would be awesome if I could just solder or desolder something. Is it possible in this model? I could send more detailed pictures if needed.

[–] [email protected] 1 points 9 months ago

I have no idea how these work from pictures alone. Do you have a manual or whitepaper with them to explain how they work?

They are designed to drive relays, so it's not going to be a case of just hooking them up directly to your motherboard.

Might be easier for now to just get some momentary switches until you can do further reading on how those capacitive pads work, how to integrate them with relays, and how you can get those relays to operate as motherboard switches.