potentiometer

FM Radio

FM Radio

Recently, I came across RDA5807 module which is an FM Radio Tuner in a very tiny package. It is very cheap and uses I2C protocol for communication which means that only two wires will be required to talk to the IC. Less wiring! My mom used to listen to the radio every day while cooking food before

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Upright Laser Harp

Upright Laser Harp

Laser harps are musical devices with laser beam “strings.” When the beam is blocked, a note is played by the instrument. Usually laser harps have the beams travel vertically in the shape of a fan or vertical lines. In this project, I built a laser harp with stacked laser beams that propagate horizontally. The beams

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Read a Potentiometer With Arduinos Analog Input

Read a Potentiometer With Arduino’s Analog Input

Let’s learn how to read a potentiometer, a type of rotating variable resistor, using Arduino’s analog input! We’ll connect up a simple circuit using a solderless breadboard and use some simple Arduino code to control a single LED. So far you’ve learned to control LEDs with Arduino’s output, and you learned to detect a pushbutton’s state (on

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