How It Works: A bar graph is a series of LEDs in a line. It’s made up of a row of LEDs with an analog input,which is a potentiometer. The Sketch The sketch first reads the input from the potentiometer ...

How It Works: A bar graph is a series of LEDs in a line. It’s made up of a row of LEDs with an analog input,which is a potentiometer. The Sketch The sketch first reads the input from the potentiometer ...

The use of this book as a jumping off point could have used a little help. For example, the LED bar graph uses 10 pins on the Arduino, which is great for an introductory example.

Take a gander at the Giant LED bar graph which [Chunky Hampton] recently completed (from this image we don’t think the nick name suits him). It’s simple both mechanically and electrical… ...