“The Companion IC is a very cool looking Clock + Ohmmeter + Capacitance Meter + Diode Tester! Turn it on by pressing Pin 1 of the IC! Keep this at your work bench for a quick test of components and checking time. Can be run on batteries or with USB if you have a supply near your work bench. This instructable explains in great detail how I made this and how you too can make it on your own. It is beginner friendly and anybody with 2-3 weeks of Arduino /Electronics experience can build this!”