In short, the ESP32 needs to find the sensor ... The data is then converted to RPM and displayed on a small OLED display. [publidave] does an excellent job of describing what exactly he did ...

It shares the same Seeed Studio XIAO ESP32-C3 microcontroller, 0.49 inch OLED display, and tiny 40 mAh LiPo battery. The only thing that’s really changed, aside from the adjustments necessary ...

Raspberry Pi HATs offer small, stackable data acquisition with features like analog and digital I/O.

A hot potato: The ESP32 chip, found in over a billion devices worldwide, contains undocumented vendor-specific commands that could potentially be misused to access device memory and manipulate ...

ESP32, manufactured by a Chinese company called Espressif, is a microcontroller that enables Bluetooth and Wi-Fi connections in numerous smart devices, including smartphones, laptops, smart locks ...