Messing around with Arduino can lead to some fun projects ... t work right and also might short out and create a fire risk. Resistor values are measured in Ohms, which indicates electrical ...

How the resistor color-code bands work At the heart of the project is an Arduino Nano clone and a potential divider that measures the resistance of the test resistor against a known fixed value.

It uses Arduino Duemilanove microcontroller board. Two wires placed in the soil pot form a variable resistor, whose resistance varies depending on soil moisture. This variable resistor is connected in ...