Here is the diagram of my Arduino infrared close proximity sensor. As you can see, the core part of my experimental setup is an Arduino UNO, but other compatible microcontrollers can also be employed.

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.

We’ve featured loads of IR Arduino projects and they are all exciting and unique. The projects spring from a specific need or problem where a custom infrared remote control is the solution. [… ...

On line 4 we use sensorPin array to set the sensor pins, on line 5 ledPin is where we connect the 3 leds. We connected the motor on pin A4 so we use this in our motor variable. Inside the setup() ...

This clever hack projects infrared dots onto the wall so your Wiimotes work without the Wii IR sensor bar. If you're unfamiliar with the setup of the Wiimote, the design is simple.

The sensor is intended as an alternative to pyroelectric sensors or PIR detectors in home automation, building automation, healthcare, security and industrial applications. Typically human presence ...