Last time, we read the state of a push button using a pull-down circuit with a 10kΩ resistor. This time, we will use the "pull-up resistor" built into the Arduino. This is a convenient method that ...

Last time, we learned how the holes in a breadboard are connected internally. This time, we will take a detailed look at the "LED" and "resistor," which are the first electronic components to be ...

In this experiment we are going to use a element called photoresistor. This sensor allows us to interact with the external environment, through intensity of light. The photoresistor is based on light ...

A resistor is an electical component that controls the "flow" of current in a circuit. Think of it like a faucet that controls the flow of water so that just the right amount comes out. Many resistors ...