CaptainDario/RPI-Zero-MagicMirror

A 50€ Magic mirror using a raspberry pi zero W.

RPI-Zero-MagicMirror for ~50€

A 50€ Magic mirror using a raspberry pi zero W. Prices always fluctuate a little bit. Therefore when you are reading this it could be like 45-55€. This guide will explain how to set up the MagicMirror2 OS on a raspberry pi zero.

Hardware required for the Mirror (tools not included):

• Raspberry pi zero W - ~11€
• Micro SD-card 16GB - 5€
• micro HDMI to HDMI adapter - ~1€
• Dependent on your monitor inputs a matching cable I used this - ~2€
• micro-USB male - ~1€
• 3.3v Relay - ~1€
• ikea Ribba frame at least 50x50cm - ~10€
• old monitor (or find one on ebay kleinanzeigen/craigslist/etc...) - ~0€-10€
• 5v PSU - ~2€
• if you do not have this lying around:
  • some cables for soldering - ~5€
  • wood to cover the back of the frame (I used the 50x50cm RIBBA) - ~2€
  • maybe some wood to secure the display in place - (~2€)
• PIR motion sensor
• mirror foil - ~10€

Total: 11€ + 5€ + 1€ + 2€ + 1€ + 1€ + 10€ + 0-10€ + 2€ + 5€ + 2€ + 2€ + 10€ = ~50-60€

RPi ZeroW Pinout (BCM numbering is the same as the number behind GPIO): source

Installing the OS on the RPI 0W

I used as a reference this guide however I need to make some changes. Also somethings were unclear to me. But he provides a ready made image that you can use to skip over all the steps described here (I did not test the image).

1. download Raspbian Lite
2. flash image to SD-card (I used Balena Etcher)
3. copy "SSH" and "wpa_supplicant.conf" to the boot-partition of the SD-card (don not forget to change the placeholders in "wpa_supplicant.conf")
4. Install Node.js
   1. sudo wget https://nodejs.org/dist/v10.16.0/node-v10.16.0-linux-armv6l.tar.xz
   2. tar xvf node-v10.16.0-linux-armv6l.tar.xz
   3. cd node-v8.3.0-linux-armv6l
   4. sudo cp -R * /usr/local/
   5. sudo reboot
5. sudo apt install npm
6. sudo apt install git
7. Install MagicMirror:
   1. git clone https://github.com/MichMich/MagicMirror
   2. cd MagicMirror
   3. npm install –arch=armv7l
8. sudo apt install chromium-browser
9. sudo raspi-config
   1. -> Boot Options
   2. -> B1 Desktop/CLI
   3. -> B2 Console Autologin
10. sudo apt-get install xinit
11. sudo apt install xorg
12. sudo apt install matchbox
13. sudo apt install unclutter
14. copy "chromium_start.sh" and "mmstart.sh" to your homefolder
15. sudo chmod a+x ~/mmstart.sh
16. sudo chmod a+x ~/chromium_start.sh
17. To start the browser and show the mirror after boot up follow this guide

Installing Modules

Turn on and off the mirror with the PIR-sensor:

I used pin 23 for the relay and pin 22 for the IR-sensor (BCM layout).

• 1st option (Did not get this working)
• 2nd option (setup as described in the link and used the 'toggle_relay.py' as callback script)
  • I had to follow this suggestion to turn hdmi off/on:
    • in ~/MagicMirror/modules/MMM-PIR/callbackScripts/default/ the files "displayOff.sh" and "displayOn.sh" had to be slightly modified (look at the provided files)
  • To toggle the relay:
    • install pip:
      • sudo apt-get install python3-pip
    • install RPi.GPIO:
      • python3 -m pip install RPi
    • move the turnOn/OffRelay python scripts to the ~/MagicMirror folder

Show guest wifi credentials and QR-code

• Shows a QR-code and wifi SSID and pwd
• Show a microsoft To-Do-List

Other modules

• complete official list

Helpful

Check config:

• goto your MagicMirror folder
• npm run config:check