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 ...

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 ...

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 ...

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 ...