Getting Started Network-wiring toolkits, which include connectors, a crimper, and a tester (among other odds and ends) are available for about $35. To make your own network cables, you need some ...

If you don’t use an Arduino, the project uses a 555 chip to test the eight wires in an Ethernet cable. The readout is simple. When testing a conductor, one of 8 LEDs will light.

Sure, you can buy Ethernet cables from the store, but where's the fun in that? We'll show you how to make your own.