A Raspberry Pi is a $40 computer that automates the house one project at a time. A Pi 5 with a case and power supply, a 64GB microSD card, a starter sensor pack (temp/humidity, motion, relay), jumper wires and a breadboard, and Home Assistant. The Pi runs the brain; the sensors are the senses; the scripts are the reflexes.
Plans
Choose a plan that fits your needs and budget
Item List
4The Pi
2 items
Sensors
2 itemsPlan Totals$162
FAQ
Common questions about this kit
Why a Pi over a smart-speaker hub?
A Pi runs open-source Home Assistant — local, private, no cloud dependency, and it talks to every brand of smart device (not just one ecosystem). A smart speaker locks you to one company and dies without internet. The Pi is the flexible, future-proof hub that owns its own data.
Do I need to know how to code?
For the basics, no — Home Assistant has a GUI for automations (when this, do that). For anything custom, a little Python or YAML goes a long way, and the community has published templates for almost everything. Start with the GUI, learn the code as the projects get more specific.
What can I automate first?
The lights-on-at-sunset and the door-open notification — small wins that prove the system. Then the thermostat that follows a schedule, the garden sensor that texts you to water, the camera that records on motion. Each project teaches a sensor, an automation, and a small win.
Why a relay sensor?
A relay is a software-controlled switch — the bridge between the Pi's 3.3V world and the 120V world of lights and fans. With a relay, the Pi can turn a real appliance on and off. It is the component that turns data into action in the physical world. (Wire mains safely, or use a pre-built smart plug instead.)
User Reviews
4.0 / 5.0
The Pi and my game engine share the cheap-computer-infinite-projects gospel — a $40 board and a few sensors and you automate the house one script at a time. Start with the GUI automation, learn the code as the projects grow, agreed.