I bought a powerblock and had install errors...no one seemed to be wiling to help with ideas, so I threw it in an box to forget about it.
After that I discovered this super cool and easy method:
I learned this from building a mini NES but the concepts apply, in general.
Adding power switch, reset switch, fan, and led to a raspberry Pi 3:
Site with the detailed instructions-
http://www.westaby.net/nespi/assembly2.htmlSummary:
Power switch- Put a latching or toggle switch across pin5 and a GND.
Reset switch- Put a momentary/pushbutton switch across pin7 and GND.
Power Light- Put an LED and 100-300ohm resistor across pin8 and GND.
Fan- Add small fan red wire to pin4, ground to GND.
Update the Pi with the scripts in the assembly guide above.
How it works:
The power switch will power up and power down the pi.
the reset switch will restart a game......come on, do over!
the fan stays running while the power is applied to the pi itself, it is not controlled by the power switch.