FHEM (open source) · Open-source Linux hubs
FHEM on Raspberry Pi
Wi-Fi · Bluetooth LE · REST · about $80
local-onlyno cloud lock-in
Protocols
Wi-FiBluetooth LE
3 W
Idle power
$80
List price
~1000
Devices (est.)
Specifications
| Category | Open-source Linux hubs |
|---|---|
| Protocols | Wi-Fi, Bluetooth LE |
| Cloud dependency | no cloud lock-in |
| Local API | REST |
| Voice assistants | Alexa |
| Open source | fully open-source |
| Directly supported devices (est.) | ~1000 |
| Idle power draw | ~3 W |
| Update outlook | long-term support 5y+ |
| List price (Amazon.com, Q2/2026) | about $80 |
Best for: Tech enthusiast / tinkererBest for: Privacy-first
Setup & gotchas
🛠️ FHEM rewards users comfortable editing configs by hand, it is one of the most flexible but least beginner-friendly options.
Editorial take
Our hands-on read — the specs above are the sourced facts.
Strengths
- + Mature Perl-based server with very broad protocol and device support
- + Completely local and highly scriptable for power users
- + Long track record and stable, well-documented modules
Trade-offs
- − Dated, configuration-heavy interface with a steep learning curve
- − Perl-centric customization is unfamiliar to many newcomers
- − Smaller, mostly German-speaking community
Related hubs
Frequently asked questions
Does the FHEM on Raspberry Pi require the cloud?
No. The FHEM on Raspberry Pi runs local-only — REST, no vendor account is required for core automations.
Which protocols and voice assistants does the FHEM on Raspberry Pi support?
Protocols: Wi-Fi, Bluetooth LE. Voice: Alexa. It directly supports an estimated 1000 devices/brands.
How much does the FHEM on Raspberry Pi cost and how much power does it use?
List price is about $80 (Amazon.com market observation, Q2/2026 — actual prices fluctuate). Idle power draw is roughly 3 W.
Source & last checked
- FHEM official site: fhem.de/ ↗
- 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.