News Programmer Turns Raspberry Pi CPU Turned Into a Button

[Admin]

This maker has forgone using external hardware to get the input he needs by using the Raspberry Pi’s CPU as a button.

Programmer Turns Raspberry Pi CPU Turned Into a Button : Read more

 

[Deleted member 1353997]

When Mcllrn touches the processor with a bare finger, the temperature rises.

It's actually the other way around. The finger cools the CPU down.

According to the OP on Reddit:

As I’m touching the CPU, its temperature drops, I’m detecting those drops and registering it as a “button press” which changes the color of the font on the screen

 

[klarkent]

I find it kind of incredible that people in Tom's Hardware think that a finger could raise the CPU temperature 😅 unless you're lava man... Sure!

 

[JWNoctis]

Comes winter and this could easily become a fry-my-Pi-with-static-electricity button.

Intriguing, but do use caution.

 

[TerryLaze]

Comes winter and this could easily become a fry-my-Pi-with-static-electricity button.

Intriguing, but do use caution.

As long as you only touch the heat sink it should be safe, I mean we slap big chunks of metal on there, if it would let electricity through we would have a very bad time with CPUs in general.