The HC-SR501 Infrared sensor will detect Infrared changes and if interpreted as motion, will set its output low. What is or is not interpreted as motion is largely dependent on user settings and ...

Note: A compact analogue reflectance sensor such as the CNY70 was not used in the Arduino Uno experiments described. Instead, a homemade sensor was assembled using a single infrared LED (IR333C) and a ...

The Arduino Uno IR Sensor detects infrared (IR) radiation emitted by objects. It typically includes an IR transmitter and receiver pair, with the receiver detecting reflected IR light. This enables ...

For building a basic robot like this one, the components are quite flexible, and you can always scale up or down depending on your needs. Below are the components, that I used in this project: Arduino ...

“Muxall open source Infrared Detector (IRD) for reflective sensing, light curtains, and fast proximity applications. Works with Arduino (5V) and Raspberry Pi (3.3V) TTL.” ...

[ladyada] has a freshly-published and amazingly thorough tutorial on passive infrared (PIR) motion sensors. Most often seen in security floodlights and automatic doors, in creative hands these sens… ...