Buzzer: An audible buzzer provides an additional layer of feedback, alerting users to test results. – Library for Arduino: The shield comes with a dedicated library for Arduino, simplifying the ...

[Carlyn] shows us how to make two different styles of continuity testers — a light up version using a bicycle light, or a buzzer version using one of those cheap window alarms. The leads are ...

A continuity tester, as found on most multimeters today, is a great tool for finding broken connections and short circuits. But once you’ve found a short, it’s up to you to figure out which ...