This lets him alert the Arduino when an object approaches the sensor without the need for polling or extra code on the Arduino side of things. As you can see, a single chip on the board takes care ...

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 ...

The usual solution is to use some sort of statistical averaging to reduce noise in sensor readings. This is often called “filtering”. The goal of this quick project is to experiment with two types of ...