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THE DEVIL SUGGESTS

Build a network cable tester

A few hours · Use what you have · Easy

A small, properly bounded project: Build a network cable tester. Start with a working first version, pay attention to what you notice, and leave yourself with something you can use, understand or show someone.

Close-up of a blue RJ45 Ethernet connector plugged into a network cable tester on a work mat, with test lights and display visible.
Gavin Allanwood — Unsplash License. The source description identifies a blue RJ45 connector plugged into a real network tester, with the tester display and indicator lights visible.

WANT PROPER INSTRUCTIONS? →

Do it

  1. Read the component labels and make a simple plan before connecting power.
  2. Set up a clear, ventilated and stable work area.
  3. Build or repair the simplest part first, with power disconnected.
  4. Inspect the work, then test carefully at the lowest sensible voltage.

What next?

Keep the useful notes, photograph the result if there is one, then go and find something else to do.