Home Assistant Yellow Kit

The foundation of your smart home needs to be local and private. Home Assistant Yellow is that foundation.

We now stock two versions of the Home Assistant Yellow Kit – read on to find the right version for you.

These kit versions do not include a CM4 or CM5 – we previously stocked a version with a CM4 included, however as we now stock a range of CM4 and CM5 boards, we’ve moved over to the kit versions to give you flexibility on memory and eMMC storage to fit your needs.

Update! Home Assistant Yellow can now benefit from a 2x speed boost by installing a Compute Module 5, see the official word here, and also reported by Jeff Geerling!

Option 1: Home Assistant Yellow Kit (with power supply)

This version includes everything you need to create your Home Assistant Yellow, just without a Compute Module.

You get the carrier board, custom enclosure, power supply (with international heads – UK, USA, EU and AUS), heatsink, fixings, ethernet cable and a couple of HA stickers!

You will need add your own Compute Module 4 or 5 and you’re ready to go. Naturally, some minor assembly is required.

Option 2: Home Assistant Yellow Kit (with Power-over-Ethernet)

This is the Power-over-Ethernet version of the Home Assistant Yellow Kit, meaning the carrier board supports PoE. use this version with your PoE-ready router, switch or PoE injector. Again, this is a kit version without a Compute Module.

You get the carrier board, custom enclosure, heatsink, fixings, ethernet cable and a couple of HA stickers!

You will need add your own Compute Module. This version does not come with a power supply as it is intended to be powered via PoE. Naturally, some minor assembly is required.

Home Assistant Yellow is Matter-ready, upgradeable, and extendable! Be sure to check out our dedicated Home Automation section for everything else you might need for your smart home project. We also stock the Home Assistant Green!

Lithium Battery Shipping: Due to courier restrictions, this product can only be shipped within the United Kingdom. With this item in your cart your shipping options will be limited and may cost more than our usual rates. Why?

Features

• Carrier board for Raspberry Pi Compute Module 4 or 5 (CM4 / CM5)
  • CM4/5 board-to-board connector
  • Supports direct boot from NVMe devices (e.g., for CM4/5 Lite)
  • 12 cm x 12 cm
  • Compatible with all 32 variants of CM4/5
  • Regulatory approval does not cover wireless variants
• Integrated smart-home wireless (Silicon Labs MGM210P Mighty Gecko Module)
  • Supports Zigbee 3.0, OpenThread, and Matter
  • 2.4 GHz radio with TX power up to +20 dBm
  • 1024 KB flash program memory, 96 KB RAM data memory
  • Pre-installed with Zigbee 3.0 firmware (EZSP), can be upgraded
• Expansion slot
  • For NVMe SSDs (M-Key)
  • M.2 socket M-Key
  • Supports 2230, 2242, 2260, and 2280 modules
  • PCIe x1
  • Note: Google Coral AI Accelerator not working, details in this issue
• Gigabit Ethernet
• 2 x USB 2.0 Type-A host port
• 1 x USB-C 2.0 device port (Silicon Labs CP2102N USBXpress USB bridge)
  • UART mode (default): debug USB-to-serial adapter
  • USB mode: CM4/5 USB 2.0 interface for USB recovery
• High-quality stereo audio DAC
  • 2 V RMS line-out on 3.5 mm audio jack
  • SNR 106 dB
• 2 x Push button
  • Red: Factory reset
  • Blue: To be determined
• RTC backed by CR2032 lithium battery
• Status LEDs (can be powered off during regular operation)
  • Red: Power
  • Green: Disk usage
  • Yellow: Home Assistant system state
• Power
  • 12 V / 2 A through barrel DC power jack (5.5 mm x 2.1 mm)
  • Typical power usage
    • Idle ~1.5 W
    • Idle with NVMe ~2.5 W
    • Load ~5-9 W
• Enclosure
  • 123 mm x 123 mm x 36 mm
  • Translucent injection-molded polycarbonate plastic
  • Tool-free assembly
  • Accommodates custom heat sink (included)

Open hardware

We spend a lot of time and resources on fine-tuning our products. We want other people to be able to study our work and be able to make their own great smart home products. For this reason, we’ve released the schematics of Home Assistant Yellow as open-source. Explore the board and view the source.

Package Contents

• 1x Home Assistant Yellow Kit (Standard or PoE version – select before adding to cart), which includes:
  • Carrier board (only the PoE version has PoE functionality)
  • Custom enclosure
  • Heatsink
  • Fixings
  • Ethernet cable
  • A couple of Home Assistant stickers
  • Standard version only: 1x 12V Power Supply (with international heads – UK, USA, EU and AUS)

CM4/5 not included. Power supply not included with PoE version

Resources

• Home Assistant Yellow Documentation
• News: Home Assistant Yellow gets CM5 support in HAOS 14