pi Zero NES cart with power button

This is a remix of HauntFreaks’s pi Zero NES cart "A Better Bezel", published Mar 27, 2017, his original design can be found here http://www.thingiverse.com/thing:2205100




This new spin adds a power button to the “Bezel” and makes the HDMI slot compatible with the Cable Matters Mini-HDMI to HDMI Male to Female Cable Adapter., I remove one of the USB cables on the Micro USB OTG Charger HUB. to make the hub fits properly on the cartridge, the power button is a 6 Pin DPDT Self-locking Micro Push Button Switches 7mm x 7mm.



Script Notes
This is the script I'm currently using.

1.-Copy and paste the following into new text file and save as shutdown.py on the /home/pi/ directory


import RPi.GPIO as GPIO
import time
import os
GPIO.setmode(GPIO.BCM)
GPIO.setup(3,GPIO.IN, pull_up_down=GPIO.PUD_UP)
while True:
if (GPIO.input(3) == True):
os.system("sudo shutdown -h now")
break
time.sleep(0.50)


2.- Edit rc.local.


sudo nano /etc/rc.local


3.- Add the