Passive Infra-Red (PIR) sensors are used to detect motion based on the infrared heat in the surrounding area. This makes them a popular choice when building a system to detect potential intruders or people in general. These sensors can take for 10-60 seconds to warm up, so try to avoid motion during that time.
Basic motion detection.
The H8054 PIR motion detection module provides basic motion detection in a small package. Compatible with the Arduino and Raspberry Pi
This is a very small light sensor. A photo resistor (also known as a photodector, or photocell) changes resistance depending on the amount of light it is exposed to.
Inspect hard to reach areas such as crawlspaces and attics with this complete inspection robot package. New Anodized Black Chassis. Full of features including: DeWalt batteries, debris guard, roll cage, wheelie bars, and travel case!
Ready to ship All-Terrain 4WD Robot Platform. This robot has 122RPM motors, and can handle most terrain with ease! A rollcage offers additional protection!