pomoDoNotDisturb

Purpose

Have a small screen showing if you are available, do not disturb, or out of office and another screen as a control hub. I wanted to learn something new and learn how to make a pi zero communicate with a Raspberry Pi 3. I also wanted to keep it offline.

What it can do

• Switch status:
  • Available
  • Do Not Disturb
  • Out of Office
• Start a Pomodoro:
  • Sets status to Do Not Disturb
• Start a Break:
  • Sets status to Available

Demo

For my setup I have the Pi Hub with a touchscreen and and the Pi Zero on a regular hdmi screen

What I learned

• Setup usb/ethernet Gadget
• Setup static IPs for usb connections
• Serve js libraries offline
  • copy unpkg or cdn libraries to local files
• Use Python3
  • pip3, python3 server.py
• Open browser after booting on a raspberry pi
• Use Dockerfile to create python container
• Setup Development environment using Docker

Install Instructions for Docker

1. Install Docker
2. Clone repository
3. Open terminal and navigate to repository
4. Create docker image

   docker build -t pomodonotdisturb -f .Dockerfile .

5. Run server in background on docker

   docker run -d -p 5000:5000 pomodonotdisturb

6. Open browser and go to the following address

   http://localhost:5000/hub

   1. The page should now be served

Install + Run Instructions for Linux

1. Clone repository
2. Open terminal and navigate to repository
3. Install libraries

   pip install -r requirements.txt

4. Run server

   python src/server.py

5. Open browser and go to the following address

   http://localhost:5000/hub

   1. The page should now be served

Install Instructions for PI3 + PI Zero W

Setup Pi Zero W

• Make sure to have Raspian Desktop installed

• You can also use a regular Pi Zero for this, we will not be using Wifi or Bluetooth for this

• Setup Ethernet Gadget

  • ONLY SETUP BASIC SSH, DO NOT DO THE ADVANCED SETUP IN THE ARTICLE

  Turning your Raspberry PI Zero into a USB Gadget

• Add Static IP to usb interface

  • Open sudo nano /etc/dhcpcd.conf and add the following:

  # add to the end of the file
  ## for pi zero
  interface usb0
  static ip_address=10.0.0.2

• Force the screen to stay on:

  • Open sudo nano /etc/lightdm/lightdm.conf and add the following lines to the [SeatDefaults] section:

  # don't sleep the screen
  xserver-command=X -s 0 -dpms

• Open website after booting

  • Open sudo nano /etc/xdg/lxsession/LXDE-pi/autostart and add the following at the end of the file:

  #@xscreensaver -no-splash  # comment this line out to disable screensaver
  @xset s off
  @xset -dpms
  @xset s noblank
  @chromium-browser --kiosk --disable-session-crashed-bubble --disable-infobars --app=http://10.0.0.1:5000/status

  • http://10.0.0.1:5000/status is pointing to the IP of Pi Hub

Setup Pi Hub(Pi 3)

• Make sure to have Raspian Desktop installed

• Clone repository

• Install libraries needed

  • Open a terminal on Pi Hub and run the following from pomoDoNotDisturb:

  pip install -r requirements.txt

• Add usb0 static IP

  • Open /etc/dhcpcd.config and add the following:

  # add to the end of the file
  ## for pi hub
  interface usb0
  static ip_address=10.0.0.1

• Run the server

  • In a terminal, navigate to pomoDoNotDisturb/src folder and run the following:

  python3 server.py

• Go to control hub

  • Open browser and go to the following address

  http://localhost:5000/hub

Putting it all together

• Make sure that both Pi's are shut off
• Plug in a micro-usb cable to the center micro-usb port of the Pi Zero and plug in the other side to the Pi Hub
• Turn on Pi Hub
• Run the server
  • In a terminal, navigate to pomoDoNotDisturb/src folder and run the following:

  python3 server.py

• Go to control hub
  • Open browser and go to the following address

  http://localhost:5000/hub

• Pi Zero should now be showing the current status

Development Setup

ToDo

• Restart server on *.py file changes
• Reload webpages on html/js changes
  • For now you have to reload the page manually

Application restarts when any .py file changes using python-hotreload

Make sure that file sharing is enabled for Docker. To enable file sharing go to Docker Dashboard -> Settings -> Resources -> FILE SHARING and enable for your drive.

Docker Development Setup

1. Clone repository
2. Open terminal and navigate to repository
3. Create docker image

   docker build -t pomodonotdisturb -f .Dockerfile .

4. Run options:
   1. Run in terminal

      docker run -it --rm -e "APP_ENVIRONMENT=development" -v %cd%:/app -w /app -p 5000:5000 pomodonotdisturb

   2. Run in the background

      docker run -it --rm -e "APP_ENVIRONMENT=development" -v %cd%:/app -w /app -d -p 5000:5000 pomodonotdisturb

5. Open browser and go to the following address

   http://localhost:5000/hub

   1. The page should now be served

Linux Development Setup

1. Clone repository
2. Open terminal and navigate to repository
3. Install libraries

   pip install -r requirements.txt

4. Run server and watch files for changes

   python src/sourceChangeMonitor.py src/server.py

5. Open browser and go to the following address

   http://localhost:5000/hub

   1. The page should now be served
6. When you make a change, the app should restart