Using the Arduino development platform you will learn how to display numbers and letters on a single 7-segment LED display. There are many ways to drive 7-segment displays, and this is a fairly simple method. However, using this method to drive even one LED 7-segment array “burns” (occupies) many of the digital I/O pins on your Arduino. In later projects, I’ll show you how to use a dedicated 7-segment LED driver.
Projects from Make: Magazine
Drive a 7-Segment LED with an Arduino
Learn how to hook up and drive a 7-segment LED display using the Arduino. We will use the Arduino alone to display numbers and letters (a-f) on our LED display.
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Steps
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Step #1:
- Gather up your gear:
- Two 220-ohm resistors (close to that value is good enough)
- 11 male-to-male jumper wires
- 1 Breadboard
- 1 Arduino Development Board