Raspberry Pi Foundation / Home Assistant · Open-source Linux hubs
Raspberry Pi 4 with Home Assistant OS
Wi-Fi · Bluetooth LE · REST · about $75
local-onlyno cloud lock-in
Protocols
Wi-FiBluetooth LE
3.5 W
Idle power
$75
List price
~2000
Devices (est.)
Specifications
| Category | Open-source Linux hubs |
|---|---|
| Protocols | Wi-Fi, Bluetooth LE |
| Cloud dependency | no cloud lock-in |
| Local API | REST |
| Voice assistants | local (Whisper/Rhasspy) |
| Open source | fully open-source |
| Directly supported devices (est.) | ~2000 |
| Idle power draw | ~3.5 W |
| Update outlook | actively maintained |
| List price (Amazon.com, Q2/2026) | about $75 |
Best for: Privacy-firstBest for: Tech enthusiast / tinkererBest for: Budget under $80
Setup & gotchas
💾 Boot from a USB SSD instead of an SD card to avoid the classic corruption failures under heavy logging.
📡 Add a Zigbee or Z-Wave USB stick on a short extension cable to keep radio range away from the Pi board.
Editorial take
Our hands-on read — the specs above are the sourced facts.
Strengths
- + Runs the full Home Assistant OS on cheap, widely available hardware
- + Huge community, thousands of integrations, no subscription
- + Onboard Wi-Fi and Bluetooth cover basic connectivity out of the box
Trade-offs
- − No Zigbee or Z-Wave radios onboard, so USB sticks are mandatory
- − SD-card installs can corrupt over time, SSD boot is recommended
- − Initial setup expects some Linux and networking comfort
Related hubs
Frequently asked questions
Does the Raspberry Pi 4 with Home Assistant OS require the cloud?
No. The Raspberry Pi 4 with Home Assistant OS runs local-only — REST, no vendor account is required for core automations.
Which protocols and voice assistants does the Raspberry Pi 4 with Home Assistant OS support?
Protocols: Wi-Fi, Bluetooth LE. Voice: local (Whisper/Rhasspy). It directly supports an estimated 2000 devices/brands.
How much does the Raspberry Pi 4 with Home Assistant OS cost and how much power does it use?
List price is about $75 (Amazon.com market observation, Q2/2026 — actual prices fluctuate). Idle power draw is roughly 3.5 W.
Source & last checked
- Home Assistant OS Raspberry Pi install docs: home-assistant.io/installation/raspberrypi/ ↗
- Raspberry Pi 4 Model B product page: raspberrypi.com/products/raspberry-pi-4-model-b/ ↗
- Sources last checked: 2026-07-20 · Prices: Amazon.com market observation, Q2/2026
- Idle-power and device-count figures are vendor-claimed or community-measured estimates. Prices fluctuate. Details without warranty — check the current manufacturer spec sheet before buying.