Read a PIR Motion Sensor
Detect movement and tune sensitivity and delay.
What a PIR Detects
A PIR sensor watches for changes in infrared heat. When a warm body like a person moves across its view, it fires.
Why It Sees Movement
PIR stands for passive infrared. It only reacts to a change in heat, so a still object soon fades from notice while motion stands out.
All lessons in this course
- Read a PIR Motion Sensor
- Measure Light with an LDR
- Set a Light Threshold
- Automatic Night Light