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6 smart home devices anyone can build with a cheap ESP32 and an even cheaper sensor

These are some great DIY projects that you can do for cheap.

Track Room Occupancy Without Cameras Using ESP32 Wi-Fi Drops

Learn how to repurpose your spare ESP32 boards into cost-effective presence detection sensors using the Tommy Sense ...
GitHub

BlueDisplay library for Arduino

With the BlueDisplay library you create the GUI for your application, e.g. Graphics, Text, Buttons, Sliders and Charts on the Arduino itself. No Android programming required! The Arduino is connected ...
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I Built a Fall Detection Sensor for Under 5,000 Yen: A Development Record of a Monitoring Device Using ESP32 and an Accelerometer

I was looking for a sensor that could automatically detect falls to monitor the elderly. The first candidate that came to mind was a millimeter-wave radar sensor like the Aqara Presence Sensor FP2. It ...