Giving Life to an OLD Digit Display

Posted on 30/10/2025 by PTSolns
Modified on: 31/10/2025
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Introduction

If you tinker around with electronics long enough, you'll eventually accumulate a bin full of random spare parts. Today I take out some components from my 25+ year old collection. I bring back to life an old single-digit 7-segment display that I cut out of something rather. I haven't really touched this part for decades... turns out it still works just fine.

I connected the seven positive wires to D2-D8 on the Nano Flip (using the NTEA-MD). After figuring out which wire corresponds to which segment, I wrote a sketch that shows two different modes. One is a type of chasing LEDs, and the other counts from 0 to 9 and repeats.

Just for fun, hope you enjoy :)


Giving Life to an OLD Digit Display

If you tinker around with electronics long enough, you'll eventually accumulate a bin full of random spare parts. Today I take out some components from my 25+ year old collection. I bring back to life an old single-digit 7-segment display that I cut out of something rather. I haven't really touched this part for decades... turns out it still works just fine.

I connected the seven positive wires to D2-D8 on the Nano Flip (using the NTEA-MD). After figuring out which wire corresponds to which segment, I wrote a sketch that shows two different modes. One is a type of chasing LEDs, and the other counts from 0 to 9 and repeats.

Just for fun, hope you enjoy :)

 

 

 

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