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Arduino Development Cookbook by Cornel Amariei

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The 7-segment display

Since the beginning of electronics, 7-segment displays have been used to display numbers. They are easy to connect and understand, and quite fun to use once they are properly implemented. We can use such a display to show the status of our system or to show data from a sensor.

Getting ready

The following ingredients are needed for this recipe:

  • An Arduino board connected to the computer via USB
  • A breadboard and jumper wires
  • A 7-segment display
  • Resistors between 220–1,000 ohm

How to do it…

Follow these steps in order to connect a 7-segment display to the Arduino:

  1. Mount the 7-segment display on the breadboard.
  2. If the display is a common anode (+) configuration, connect the common anode (+) pin to the VCC port on the Arduino. If it is ...

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