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Network cable tester

This is an automatic Cat6 / Cat5 network cable tester designed using NE555 timer and 4017, decade counters. This unit test all 8 wire lines of twisted pair network cable and indicate pass/fail status with a single LED.

We design this unit to test network connectivity issues in Cat6 / Cat5 cable systems and it is capable to check both crossover and straight-through type network cables.

A prototype version of network cable tester.

The recommended way to construct this circuit is on PCB. Both Master and Salve units need to be built on two separate boards. To perform test one end of the network cable must be connected to the Master unit and other ends need to be connected to the Slave unit. After connecting both Master and Slave units press "START-TEST" (S1) button to perform the test. Status of the cable is indicated through LED2 (PASS indicator).

PCB and schematic of this unit are available to download at google drive and easyeda.com.
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Ash Green said…
Awesome! No words. You always go one step beyond.

There is so much great, useful information here. Thank you! Thank you! Thank you!
Read our guide if you wish.
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Thanks again :)
April 23, 2020 at 7:20 PM
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