Home Automation¶

The install process on slower SBC models can take a very long time, up to 2 hours, hence take a coffee, find some other activity and check back once in a while. It will show Installing Python-3.8.0… a very long time.
If you want to see processing details, run htop on a dedicated terminal or SSH session to watch Python build process live.

After dietpi-software has finished and the service starts the first time, please go through the following steps manually:

• Run htop and wait until the CPU usage of the homeassistant processes goes down to nearly zero.
• Run systemctl restart home-assistant
• Run htop and wait until the CPU usage of the homeassistant processes goes down to nearly zero.
• Open the HA web UI (see below). It will again install some Python modules on first access, which can again take a little while. Always check htop if you are unsure, which reveals any Python/pip module install process, if currently done.

The web interface is accessible via port 8123:

URL = http://<your.IP>:8123

The configuration files are stored system-wide within:
/mnt/dietpi_userdata/homeassistant

Please see the online documentation: https://home-assistant.io/docs/

Home Assistant is installed within a dedicated Python environment, powered by: pyenv/pyenv.
This places a standalone Python instance which runs completely independent from any other installed Python instance or modules. If you need to install additional Python modules into this pyenv environment, update Python itself or similar, you need to open a shell as user homeassistant and activate the pyenv environment:

sudo -u homeassistant bash
. /home/homeassistant/pyenv-activate.sh
pip3 install <module> # Or whichever install/update you need to do

To quickly update Home Assistant to the current version, run:

/home/homeassistant/homeassistant-update.sh

IKEA TRÅDFRI: apt install autoconf

You will be asked to create a emoncms.org account and input your unique API Key. DietPi will automatically apply your API Key during installation. If you did not complete this, or wish to change the API Key on your system, please follow the steps located here, otherwise continue below.

• Attach GPIO extender/riser to RPi:
  
  
• Attach EmonPi to RPi:
  
• Verify pins are visible:
  

Connect the sensor to measure the power consumption to the EmonPi:

• Plug the 3.5mm power consumption sensor into the EmonPi:
  
• Clip the power consumption sensor onto a positive (red) cable (cables are live, use caution):
  

Assign a name to your power sensor input¶

Inputs are the real time value of the data received from the EmonPi. We will assign a name to the power value so we can use it later.

• Login to your https://emoncms.org account
• Click Setup at the top right of screen, then click Inputs
• Node 5 and Key 1 is your power value reading. Click the pencil on right hand side and change the name to Power WATT. Click the tick to save.

Setup feed¶

Feeds allow your EmonPi data (inputs) to be saved to a database. You will need feeds setup if you want to view historical (and pretty) stats.

• Login to your https://emoncms.org account
• Click Setup at the top right of screen, then click Inputs
• Select the spanner on the far right of Power WATT
• Check the screen matches the following image
  
  then click add
• To verify the feed is active, click Setup at the top right of screen, then click Inputs. You should see log under Process list of Power WATT:
  

My electric is an application that will allow you to view historical usage of your electricity. Also renders a pretty graph and can calculate costs.

• Login to your https://emoncms.org account
• Click Apps at the top of screen, then click My Electric
• Under the Logout button at the top right, click the spanner
• Under Power feed (Watts): select Power WATT
• Under Bar graph feed: select Power WATT
• Under Wh or kWh feed?: select Watt hours elapsed
• Enter your unit costs for your electric (optional).

Then click Save.
Press F5 to refresh the page and view your energy consumption.

The web interface is accessible via port 8124 resp. 8424:

• HTTP: http://<your.IP>:8124
• HTTPS: https://<your.IP>:8424

Use the following commands to control the Domoticz system service:

systemctl status domoticz

systemctl stop domoticz

systemctl start domoticz

systemctl restart domoticz

/opt/domoticz

/mnt/dietpi_userdata/domoticz

http://<your.IP>/tasmoadmin