Washing Machine App

Installation

• Requires git, python3
  • curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
  • python get-pip.py --user
  • pip install --user pipenv
• Clone repository: git clone https://github.com/M4a1x/laundrymeter
• Enter directory: cd laundrymeter
• Install dependencies: pipenv install
• Run ./start_development.sh or ./start_production.sh

To run the server on port 80 (or other port < 1024)

• Change the script accordingly (i.e. substitute 8000 with 80)
• Install authbind (as root)
• i.e. add all users to be able to use port 80: touch /etc/authbind/byport/80 and chmod 777 /etc/authbind/byport/80 (also as root)
• Start the script: authbind --deep start_production.sh

To be able to logout from ssh after starting the server

• Use nohup authbind --deep sh start_production.sh &
• or tmux / screen

Configuration

• VM IP: 100.117.66.20
• Needs the following connections:
  • TP-Link Smartplug (for sensor readout), in 192.168.22.3
  • LDAP-Server, SSL-Port 192.168.21.10:636, for authentication
  • Port 587 to connect to gmail via STARTTLS, to send notifications
  • Port 8000 for unencrypted access to REST Api. Reverse proxy for https is recommended.

Washing Machine Stats

• Closed door, not running, but on: 2.2W, current: 33mA
• Open door, not running, but on: 0W, current: 42mA
• Off: 0W, 42mA
• Finished: < 50W distinct pattern, sharp spikes with pauses
• Heating: > 2000W Temperature can probably be infered from duration

Running Detection

Problem

• Machine pauses after heatup. 3min, 2min
  • -> Threshold of 50W, delay of 4min (48 ticks)

Other ideas:

• Simple Threshold
• Signal Energy, AKF
• Double Threshold
• Timed Threshold