I recently got a 4-Digit 7-Segment LED Display from Sparkfun, and couldn't wait to use it. Here, I will show you how to wire it, and some sample programs to use with it!

Step 1: Display info

This is the way the display works. It's multiplexed, so you select the digit by setting its pin (we'll get into pins later) HIGH, and you select the segment by setting its pin LOW. You display multiple digits at once by rapidly cycling through them.
The Pins (digits are numbered from the left):
Digit 1: 1
Digit 2: 2
Digit 3: 6
Digit 4: 8
Segment A: 14
Segment B: 16
Segment C: 13
Segment D: 3
Segment E: 5
Segment F: 11
Segment G: 15
Decimal Point: 7

About This Instructable


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Bio: I love electronics, computers, and everything DIY!
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