Home Assistant is a free, open-source, and lightweight home automation software that runs on top of Home Assistant Operating System.
Home Assistant OS can be installed and configured on Raspberry Pi 4, which is a low-power and compact device for running Home Assistant.
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Download the Home Assistant OS image for your Raspberry Pi 4 64-bit using this hyperlink.
Then download, install, and open the Raspberry Pi Imager tool to flash the Home Assistant OS image to an SD card.
In the Imager tool first select the downloaded OS image.
Click Storage and choose the connected Micro SD card.
Click Write and wait for the process to complete. This may take a while.
After the Home Assistant OS image is flashed successfully, eject the Micro SD card, and connect it to the Raspberry Pi’s card slot.
To boot Home Assistant, connect the LAN cable to the Ethernet port on Raspberry Pi. Connect the power supply to turn on the Raspberry Pi. Wait for a few minutes as it boots and updates. This can take up to 10-20 minutes
If that standard URL is down open your router admin page and find the IP address of the raspberry pi. Then type the IP address of your Raspberry Pi in the web browser, such as http://xx.xx.xx.xx:8123. Alternatively, you can use the android application for home assistance.
After installing all the updates, the Home Assistant will display the following screen to create an account.
Enter your name, username, and password to create your account. Ensure the password you enter is strong. Then click Create Account.
Then choose your location using the Detect button, select Unit System, Currency, and click Next.
If there are smart devices in your home connected to your network, Home Assistant will automatically display them for integration. You can select them and set them up or do it later. Click Finish.
At this stage, the Home Assistant installation and setup is complete.