“There is nothing worse than running your drops only to realize that you have a fault in one of the cable runs. The best approach is to get it right in the first place by using a “LAN Cable Tester”. Sometimes, cables can also tear because of poor material quality or bad installation or sometimes they get gnawed by animals.
In this project, I am going to make a LAN cable tester with just a few basic electronics components. The entire project, excluding the battery cost me just a bit over $3. With this tester we can easily check RJ45 or RJ11 network cables for their continuity, sequence and if they have a short-circuit.”