Home Assistant adds support for a $4 mmWave sensor

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mmWave sensors are a recent sensation in the Home Assistant community. Unlike passive infrared sensors, which detect motion, mmWave sensors detect the presence of objects by emitting high-frequency electromagnetic waves in the millimeter wave band. These waves are reflected by any objects in their path, and the sensor then analyzes them to determine the distance of the object. Thus, a mmWave sensor will pick up your presence when you are sitting on a chair and working for hours, or watching TV on the couch while barely stretching a leg.

Currently, most mmWave sensors on the market share a common drawback – they are relatively expensive. This is especially true when compared to the more widely available passive infrared sensors. However, as production of mmWave sensors increases, costs are becoming more reasonable. In the upcoming Home Assistant Core 2023.2 update, support will be added for the Hi-Link LD2410B, which at ~US$4 is one of the most affordable options available. Though it may be a bare board without a casing, it does support Bluetooth Low Energy, and it can be easily discovered by Home Assistant and its Bluetooth proxies.

A portrait photo oif Liam Alexander Colman, the author, creator, and owner of Home Assistant Guide wearing a suit.

About Liam Alexander Colman

is an experienced Home Assistant user who has been utilizing the platform for a variety of projects over an extended period. His journey began with a Raspberry Pi, which quickly grew to three Raspberry Pis and eventually a full-fledged server. Liam's current operating system of choice is Unraid, with Home Assistant comfortably running in a Docker container.
With a deep understanding of the intricacies of Home Assistant, Liam has an impressive setup, consisting of various Zigbee devices, and seamless integrations with existing products such as his Android TV box. For those interested in learning more about Liam's experience with Home Assistant, he shares his insights on how he first started using the platform and his subsequent journey.

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