Enough is never enough. Although [David Johnson-Davies] has a couple of multimeters lying around, he still felt the urge to build a stand-alone continuity tester and has posted details for a super ...

Another great use for the continuity tester is to determine whether or not a switch is working. One way to identify circuit ...

This is one of those rare cases. [oxullo] came across [Leo]’s original build for the ultimate continuity tester. This design is much more sensitive than the function which is built in to most ...