Laser Ranging Sensor RS485 (4-400cm) [Discontinued] Colour_Clear Mini Controller (with battery CR2025

Mini Controller (with battery CR2025 inside) x1

Adafruit Ultimate GPS Logger Shield - Includes GPS Module (0:55)

air pressure and humidity can all affect particulate levels (and the gas sensor readings) too

Universal ball caster Wheels x2

Laser Ranging Sensor RS485 (4-400cm) [Discontinued] Colour_Clear Mini Controller (with battery CR2025This laser range sensor can be used to detect objects in 4~400cm with 2cm accuracy. With 3 measurement modes supported, it is well applicable to various detection scenarios like security gate detection, access control systems, security alarm devices, smart trash cans, smart cars, or robots for obstacle avoidance. The sensor metal black shell adopts a threaded barrel design and its probe comes with an optical cover. The integrated design makes the