A fully open hardware drop-in replacement PCB for the 1st generation Home Mini enclosure. Retains the original enclosure and speaker while giving you full control — local processing, ESPHome integration, and hardware wake word detection without any cloud dependency.
Available on Crowd Supply
Back the campaign to get your board. Pre-orders ship once the campaign reaches its goal.
Order on Crowd Supply →Specifications
| MCU | ESP32-S3 |
| Audio processor | XMOS XU316 |
| Amplifier | TI AIC3204 DAC + TPA6211 amplifier |
| Wake word | okay_nabu hey_jarvis hey_mycroft alexa |
| Firmware | ESPHome (open source) |
| Connectivity | Wi-Fi 802.11 b/g/n, Bluetooth 5 / BLE |
| Provisioning | BLE Improv Wi-Fi |
| Integration | Home Assistant Voice Assistant |
| Form factor | Drop-in for Home Mini Gen 1 enclosure |
| Power supply | 5 V via original Micro-USB connector |
| Hardware license | CERN OHL-S v2 (open hardware) |
| Firmware license | MIT |
Key features
No cloud required. Wake word detection and voice processing run entirely on-device.
First-class ESPHome support. Update firmware via ESPHome Dashboard, no command line needed.
Same PCB footprint as the original board. Reuses the speaker, enclosure, and original power supply.
Works out of the box as a Home Assistant Voice Assistant satellite.
XU316 handles microphone processing, noise cancellation, and acoustic echo cancellation.
Full KiCad schematics and PCB design files available on GitHub under CERN OHL-S v2.
Back the campaign on Crowd Supply to be among the first to receive a board.