This is particularly useful for connecting 5V sensors or components to 3.3V logic-level microcontrollers like the Arduino Nano ESP32, Raspberry Pi ... is the time it takes for the ultrasonic pulse to ...

Since I had a spare ESP32 lying around, I tried building a smart dashboard that pulls metrics from the other smart devices in ...

This project transforms an ESP32 and one or more HC-SR04 ultrasonic distance sensors into a versatile Bluetooth Low Energy (BLE) MIDI controller. It offers two primary modes of operation: Single ...

Designed by Everything Smart Home, the Everything Presence Lite is a compact, ESP32-based mmWave presence sensor designed to be easily integrated with Home Assistant open-source home automation ...

It claimed this would be the industry’s first 3D ultrasonic sensor operating in air receiving such certification. Sonair’s acoustic detection and ranging technology equips AMRs with omnidirectional ...

Ultrasonic time-of-flight (ToF) sensors come to rescue indoor sensors, which often fail to detect and avoid barriers like plexiglass walls, translucent doors, and glass windows. Here is how ToF ...

Abstract: This paper presents a multi-ultrasonic-sensor system designed for Simultaneous Localization and Mapping (SLAM) on the open source robot Kobuki Turtlebot. The operating system used in this ...

we propose a defense system called LightDefender to protect current PIN-based systems from PIN replay attacks using a single ambient light sensor. Specifically, we protect the PIN input by leveraging ...