EP-0077

Power Button For RPi

Old Version V1.22

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New Version V2.02

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Description

As everyone at some point will recognize the Raspberry Pi doesn't include any kind of shutdown button.
So the only way to power it off is by unplugging it from the power supply.
To make sure you get no corruption of your data files on the SD card you should shutdown the Raspberry before powering it off.
So the whole procedure can be a bit annoying especially if you want to use the Raspberry as some kind of embedded PC .
e.g. a media server or an internet radio.
NOTE:There is new version: V2.02, using this method to setup the driver, Link is under below:
Driver installation for Version 2.02

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Compatibility List

• Compatibility

Platform	Version 2.02	Version 1.22	Notes
Raspberry Pi 4 Model B	Need wiringPi version 2.46	Need wiringPi version 2.46	√
Raspberry Pi 3 Model A Plus	Need wiringPi version 2.46	Need wiringPi version 2.46	√
Raspberry Pi 3 Model B Plus	Need wiringPi version 2.46	Need wiringPi version 2.46	√
Raspberry Pi zero	√	√
Raspberry Pi zero W	√	√
Raspberry Pi 3 Model B	√	√
Raspberry Pi 2 Model B	√	√
Raspberry Pi Model B+	×	×
Raspberry Pi Model A+	×	×
Raspberry Pi Model A	×	×

Features

Power Button provides a small circuit that includes the features:

• Sending a shutdown signal to the Raspberry if the Shutdown Button is pressed
• Waiting for the Raspberry to shut down
• Powering off the Raspberry after save shutdown
• Powering on the Raspberry after the Button is pressed again
• LED light indicating the current state: On / Shutdown / Off
• Easy to setup

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ChangeLog

• Updated MCU
• Changed Layout
• Changed Button
• Optimized code

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Dimension

Parameter	Value
Dimension	65mm x 30 mm x 20mm
Weight	22.72g

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Package Includes

• Power Button For RPi Module x1
• IR Remote controller ( without battery) x1

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Mechanical Drawing

• V1.22 and V2.02 has the same Mechanical Drawing, means that they has the same size.

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Parameters

There is a chart which can show you the function of the GPIO Pin definition of this board:

Function	BCM	RPi
Disk Status	21	Pin 40
Shut Down	24	Pin 18
PWR Status	26	Pin 37
GND	N/A	Pin 6/9/14/20/25/30/34/39
5V	5V	Pin 2/4

NOTE: Please make sure that your Raspberry Pi  have  5V/2.5A  power supply with this module!!!

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How to update wiringPi's Version

Currently, the version of wiringPi is 2.44, but it is not work properly on raspberry pi 3 B plus, so you need to update the wiringPi's version according to this manual.

• 1. Check current version of GPIO:

 gpio -v 

• 2. Typing this command on a Terminal in raspberry Pi 3 B plus.

 gpio  readall

you will see this:

pi@raspberrypi:~ $ gpio readall
Oops - unable to determine board type... model: 13

you need to update wiringPi by following steps:

• 3. Get the source from github.

sudo apt-get install wiringpi
cd  wiringPi/
sudo ./build

After that, you can typing : "gpio -v" to check whether the version is updated.
If you've got this message means it was successfully.

gpio version: 2.46
Copyright (c) 2012-2018 Gordon Henderson
This is free software with ABSOLUTELY NO WARRANTY.
For details type: gpio -warranty

Raspberry Pi Details:
  Type: Pi 3+, Revision: 03, Memory: 1024MB, Maker: Sony
  * Device tree is enabled.
  *--> Raspberry Pi 3 Model B Plus Rev 1.3
  * This Raspberry Pi supports user-level GPIO access.

How to wire it up

Do NOT connect your power supply to Raspberry Pi,  Please connect it to Power Button directly.

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How to set it up

• 1. Remove your TF card and connect it to your PC or laptop with TF card adapter.
• 2. Modify /boot/config.txt file as following:

Raspberry Pi 4 model B

dtoverlay=power-off,gpiopin=26
dtoverlay=pi3-act-led,gpio=21

Raspberry Pi 3 model B

device_tree=bcm2710-rpi-3-b.dtb
dtoverlay=power-off,gpiopin=26
dtoverlay=pi3-act-led,gpio=21

Raspberry Pi 2 Model B

device_tree=bcm2709-rpi-2-b.dtb
dtoverlay=power-off,gpiopin=26
dtoverlay=pi3-act-led,gpio=21

Raspberry Pi zero / zero W

device_tree=bcm2708-rpi-0-w.dtb
dtoverlay=power-off,gpiopin=26
dtoverlay=pi3-act-led,gpio=21

more info please access this link:

[Device Tree| https://www.raspberrypi.org/documentation/configuration/device-tree.md]

Raspberry Pi model	Device_Tree Info
Raspberry Pi 3 B+:	device_tree=bcm2710-rpi-3-b-plus.dtb
Raspberry Pi 3 B:	device_tree=bcm2710-rpi-3-b.dtb
Raspberry pi zero /zero w:	device_tree=bcm2708-rpi-0-w.dtb
Raspberry Pi 2B :	device_tree=bcm2709-rpi-2-b.dtb
Raspberry Pi B :	device_tree=bcm2708-rpi-b.dtb
Raspberry Pi B+ :	device_tree=bcm2708-rpi-b-plus.dtb

• 3. Install the library of wiringPi and Download shell script to check the GPIO pin's status:

sudo apt-get install -y wiringPi
cd ~
git clone https://github.com/yoyojacky/powerbutton.git
cd ~/powerbutton
sudo  mv   ~/powerbutton/gpioshutdown    /etc/init.d/
sudo  chmod   +x   /etc/init.d/gpioshutdown

• 4. Edit the initialized file in /etc/rc.local :

sudo  nano   /etc/rc.local

Add those three lines before exit 0

sudo /etc/init.d/gpioshutdown &      #Thanks for Steven Porter's kindly advise. (update the "&" mark at the end of command)
gpio mode 25 out
gpio write 25 1

After edit this file, Press "Ctrl + X" to save this file and Press "Y“ to save it.

• 5. Reboot your Raspberry Pi and plug power button on your RPi, press the button to test.

Have fun.

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How to install driver for Version 2.02

• One-Step Automated Install

For those who want to get started quickly and conveniently, you may install Driver using the following command for your Raspberry Pi:

curl -sSL git.io/vpqzF | bash 

Notice:Linux Command Case sensitivity

• Feature:
  • Power on/off/reboot by remote controller.
  • Power on/off/reboot by keys.
  • fit for IR remote Power button Version 2.02 and later

Reboot your raspberry and try to press the power button, reboot button and test it.

FAQ

• Q: Cloud it be used on Pi4B?

 A: Yes.

• Q: The version2.02 is same with the 1.22?

 A: Yes.

Video Tutorial

Please follow the link: [ Raspberry Pi 3B with Ir remote power button and pi supply & USB HUB | https://youtu.be/BhEoGZshiPM ]