Make Your Own Rain Detector

    

A simple electronic kit for beginners, transistors, resistors and cable are connected together with drawing pins on a wooden base. The resulting electronic instrument can be used to test for moisture, as a plant protector or conductivity meter. There is a clear description of transistors and resistors and their function.

Delivery without battery.

Contents:

• Wooden board,
• transistors,
• resistors,
• cable,
• battery clips,
• drawing pins,
• LED,
• blotting paper and
• instructions.

From 12 years, develops understanding of Physics and logical reasoning.