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 ...

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 ...

If the tester lights up, the box is grounded. It's difficult and dangerous to trace the routes of various wires with the ...