Working Principle The IR sensor emits infrared light from an LED. When an object comes into range, the emitted light reflects back to the sensor’s receiver module. Based on the intensity of the ...

The part list consists of one Arduino, two resistors, and one IR emitter. That’s right, an emitter. When an LED (IR or otherwise) is reverse biased it can act as a light sensor.

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 ...

Arduino Uno (or any compatible microcontroller) DC Motor with driver (e.g., L298N) IR Sensors (for ground and first floor detection) Seven-Segment Display (for showing the current floor) Push Button ...

STMicroelectronics has introduced a multi-spectral ambient light (plus UVA and near-IR) sensor, with flicker detection, in a package smaller than 1mm x 2mm. Applications are foreseen with phone ...