Tech Xplore on MSN
These penny-size ultrasonic tags ditch batteries and silently turn everyday objects into private smart home trackers
Most smart home devices require power one way or another. You have to plug them in, recharge them, or replace their batteries ...
Works with the HC-SR04 ultrasonic sensor in the 3 Pin Mode/4 Pin Mode, the Ping))) ultrasonic sensor in the 3 Pin Mode and the DHT temperature/humidity sensors for getting precise distance values. !
Measuring the speed of a rotating object is a common requirement. Knowing the speed of table and ceiling fans, as well as kitchen appliances such as mixers and grinders, can often be useful. However, ...
This project measures the height of static objects using ultrasonic echo-ranging. The sensor is mounted at a fixed height (30 cm), and the object's height is calculated by subtracting the measured ...
Abstract: The optical fiber sensors (OFSs) have been demonstrated to exhibit intrinsic safety and resistance to electromagnetic interference (EMI) that make them highly effective in partial discharge ...
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