CodeBug – Wiring up your sensor

Wiring up your sensor

You may need to check the information sheet of your PIR sensor, however they usually have three pins, labelled (+) (OUT) and (-). Using three jumper cables, connect the positive (+) pin of the PIR to the VCC hole on CodeBug’s black expansion port, connect the negative (-) pin to the GND hole on CodeBug’s expansion port and the output pin to the SDO hole.

Top Tip!

PIR sensors are used everywhere to detect movement, such as in security lights. PIR stands for Passive InfraRed, it is a type a sensor that can detect changes in the amount of infrared (IR) light. The IR light it senses can either be reflected by objects or given off by anything that produces heat (such as people and animals).

Activities with this step

Motion Sensing Codebug