rpi-shutdown

Purpose

Safely shutdown (halt) Raspberry pi using a normally open momentary switch

Hardware Requirements

Requires one small normally open momentary push button switch and two short insulated wires.

Instructions

Mount switch and Connect each wire per below.

Connect control wire from one switch terminal to RPI GPIO control pin 5 (default)
Connect ground wire from second switch terminal to RPI GPIO ground pin 6 (default)
or set gpio_pin variable by editing shutdown.py and setting gpio_pin = variable to desired control pin, then connect control wire as appropriate

Note: If desired set button_hold_sec variable by editing shutdown.py and changing button_hold_sec = variable to desired number of seconds required to hold down momentary switch before RPI halt action is taken.
default is 2 seconds. 0=No delay

Software Install

Easy Install

Step 1 With mouse left button highlight curl command in code box below. Right click mouse in highlighted area and Copy.
Step 2 On RPI putty SSH or terminal session right click, select paste then Enter to download and run script.

curl -L https://raw.github.com/pageauc/rpi-shutdown/master/install.sh | bash

The command above will download and Run the GitHub rpi-shutdown install.sh script and install to ~/shutdown folder.

Manual Install

cd ~
mkdir shutdown
cd shutdown
wget -O shutdown.py https://raw.github.com/pageauc/rpi-shutdown/master/shutdown.py
chmod +x shutdown.py
sudo crontab -e

Add line below to sudo crontab -e (without #) Ctrl-x y to exit nano and save change

@reboot /home/pi/shutdown/shutdown.py

Operating Instructions

After initial power boot of Raspberry Pi, To Initiate Halt, press momentary switch for specfied time to Initiate safe shutown. You can then safely power off RPI or alternatively Restart from Halt by waiting approx 5 seconds, then press and holding momentary switch for specified seconds. This will restart the raspberry pi from the Halt state.