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.
Ready to ship prebuilt all-terrain enclosed platform! This is a heavy-duty robotic platform with IG42 078 RPM motors, an enclosed chassis, and RC control system. Powered by DeWalt batteries.
Ready to ship SST2 tracked robotic platform. Features IG32 53 RPM gear motors and FLYSKY remote control. Charger for robot included. Handles up to 5lbs of additional payload and travels 40 ft/min.