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Hack your old Google Home Mini into a Home Assistant-ready offline smart speaker with this DIY kit

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Why This Matters

This DIY kit transforms an old Google Home Mini into a fully offline, privacy-focused smart speaker compatible with Home Assistant, allowing users to control smart devices without relying on cloud services. This development is significant as it promotes local processing, enhances user privacy, and extends the lifespan of existing smart home hardware. It also offers a cost-effective way for consumers to upgrade their devices while maintaining data security.

Key Takeaways

Rita El Khoury / Android Authority

TL;DR The MiciMike Home Mini Drop-In PCB kit is made to replace the internals of the Google Home Mini, making it a Home Assistant-compatible offline speaker.

The kit also allows the speaker to be used with cloud-based services like ChatGPT.

You can get a kit for $85. They’re expected to ship in October.

The first-generation Google Home Mini is nearly a decade old at this point, and with so many in circulation, there’s a decent chance you might have one sitting around unused. If you’re looking for something to do with a spare, an upcoming crowdfunded kit will let you swap the Home Mini’s guts to make it a fully local smart speaker that can control your gadgets without any data leaving your home.

The MiciMike Home Mini Drop-In PCB is made to install inside your existing first-generation Google Home Mini without much technical knowhow: there’s no soldering involved, and the kit comes with step-by-step instructions that include photos. The project has crushed its funding goal on Crowd Supply, having raised nearly $20,000 (to its initial goal of $8,000), with units expected to ship this year.

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With the MiciMike board installed, your Google Home Mini will work with Home Assistant to let you do basic smart home stuff with “no cloud, no vendor account, no subscription.” For extra privacy, the kit preserves the Home Mini’s mic control switch that physically disconnects the speakers’ microphones from power. You can check out detailed info about the project on GitHub.

If you’re not so concerned with keeping things local and private, MiciMike’s Crowd Supply page also clarifies that you have the option to “use a cloud-based conversation agent such as ChatGPT or another LLM.”

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