Let me share my contactless heart rate monitoring device project and future plans.

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About three months ago, I built a contactless heart rate monitor and posted it on Reddit. I even mailed it to a helpful Reddit user for testing. One of the reasons I created this device was because I'm allergic to Apple Watch bands, which led me to consider making a contactless heart rate monitor. I chose a millimeter-wave radar and had a circuit engineer friend design the circuit. I was responsible for burning the open-source code into the chip. This device can display basic heart rate and respiration, but its drawbacks are also obvious: it can only display a maximum heart rate of 100 and is easily affected by interference—a common problem with millimeter-wave radar. Now I've completely open-sourced it, including detailed PCB design, 3D printed models, code, and sensor data, so anyone should be able to easily replicate it.

https://github.com/BioSeries/BioZero

I'm currently upgrading this product. I've hired a professional designer to design its form factor, and I've reselected the millimeter-wave radar sensor. In the past few days, I've been designing algorithms to try and reduce the noise of the millimeter-wave radar. My circuit engineer friend is currently screening for a screen with a suitable size and resolution. Even more exciting is that we plan to give this product a unique switching mechanism, and for this, we're racking our brains trying to find electronic switches that can realize our ideas. I've updated the project development process in more detail in my article

https://georiginai.com/posts.html?p=2026-01-02.md

feel free to leave a comment if you're interested.