PIR Motion Sensor Motion sensing is useful for a range of applications, from intruder detection to home automation. PIR motion sensors use infrared light to detect movement.

This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module,used here for non-contact object detection purpose. The HC-SR04 module includes ultrasonic ...

While PIR sensors can be used with Arduino and other microcontroller boards, those best-suited for hobby use are smart enough to perform simple tasks without any programming.

Historically, we’ve used IR and ultrasonic sensors but [Makers Mashup] decided to use an ESP32-Cam as a motion sensor in his latest animatronic creation. You can see a video of the device and ...

Echo’s Hidden Motion Sensor Can Turn On Your Lights and Other Cool Stuff. Published June 14, 2023. Grant Clauser. ... Echo speakers use ultrasonic sound waves to detect motion, ...

The options when specifying sensors for long-range object detection or positioning usually boil down to two alternatives: optical sensors using either infrared or visible-red light and ultrasonic.

Sensor Sense: Eliminating ultrasonic cross talk May 10, 2007 Proximity sensors that use ultrasonic sound waves calculate distance to an object using the time it takes to receive the echo from an ...