Being able to measure ducted airflow cheaply and non-intrusively, like with this ultrasonic ... things that makes perfect sense in theory, but takes some engineering to turn into a functional sensor.

and after running across a $4 ultrasonic sensor, decided to build his own speaking distance sensor (.de, Google Translation). Inside [Klaus]’ device is an Arduino Uno, an HC-SR04 ultrasonic ...

Creation Crate is a monthly subscription box service that sends you kits so you can build cool gadgets using open-source Arduino microcontroller ... that uses an ultrasonic sensor, a reflex ...

it’s time to make eight intense Internet of Things projects. The Internet of Things with Arduino Blueprints book will teach you how to assemble everything from a Wi-Fi signal strength sensor to ...

This one is an unusual smart home project, potentially - how to monitor a fish tank’s health with an AI-enabled ultrasonic sensor system. The detailed project is highlighted on Hackser.io and features ...

The ESLOV IoT Invention Kit is an official Arduino product that adds Internet of Things capabilities to your hardware products. Trying to build a connected ... multiple sensors and outputs ...