You know when you press a power button for 5 or 10 seconds to power down?

Other Hardware General Electronics
1

Is this possible to achieve using logic gates (no micro-controller)? I'd like to have a button pressed for 5 or 10 seconds trigger an LED to turn on, but I have no clue how to achieve this or if it's even possible.

2

You could probably do this with a 555 in one-shot mode...

3

These sorts of buttons do not turn off a device completely, they just put it into a standby mode. It is easy enough to do with a capacitor and resistor. The switch discharges the capacitor until it reaches a threshold witch then triggers the thing off (standby).

4

I presume you want be able to then press the same button to turn the LED back off :stuck_out_tongue:

Yes it's possible (I mean a MCU is simply made up of lots and lots of transistors).