USB Splice and connect

[masscrazy]

I want to cut a USB cable in half and pass the the cable through a small hole inside my PC case. Then join then using a 12v DC connector. The USB A end will connect to the back of the motherboard and the micro USB end will plug into an IoT remote PC power button. I was thinking to use those 12v DC jacks to connect the positive and negative wires together, seems like a sound option but thought I'd ask.

Only because I have thesee connectors laying around.

Please ignore the 4 cables - just want to attach negative and positive

https://imgur.com/aARMafm

 

[Why Not Indeed]

If you're sure it will work with only those two wires connected, then don't see why not.

 

[masscrazy]

Why not indeed!

 

[RandomGrinch]

Please correct me if I'm wrong, but for a remote PC switch, won't you need another cable into the case, to connect to the motherboard front panel header?
If you purely wanted to get a 5V supply to power the module, could it have a core in this cable and connect to any 5V supply within the case, i.e. a molex?
What IoT module are you looking at?

 

[masscrazy]

Basically its this nifty little thing. Decided aginst splicing the USB cable's cables are like 26AWG and fiddly. Instead just bent the metal mesh a bit to allow the USB to go through.

Works quite well this device, has a little 433 button too.

 

[RandomGrinch]

Interesting unit, it looks to be based on an ESP8266 type module?
The USB connection could possibly be used to re-flash it, if you ever felt like tinkering!
Given the external antenna, for neatness, I may have considered keeping the module within the case, running the antenna outside and if I had a spare USB header on the motherboard, possibly used one of these, to power it...

 

[masscrazy]

That might be a shout, although its some chinese cheap stuff with god knows what the device might transmitting, I am tied to the Tuya/Smart life ecosystem and works very well with Alex and such. So maybe if i'm feeling brave could flash it. I have a second one I bought for my main gaming PC might try it. It cost like £14 from AE.

But that USB 2 to UBC A thing - its on its way - but intended to use for the OS USB drive - but might use it to power this! This is the one I got.