GitHub - mdcanham/Ethernet_Continuity_Tester: This Arduino project creates a simple device that allows the user to test for continuity between two ends of an ethernet cable.
Arduino Network Multi Tester - Instructables
Cable Tester RJ45 (Ethernet) - Hackster.io
GitHub - pxlphile/Arduino-LanCableTester: A LAN cable tester with an active and a passive part, based upon an Arduino Nano
Cable LAN Tester Circuit under Repository-circuits -22342- : Next.gr