Here are two simple tools for the Hobbyists to check their Prototype boards. These use LEDs as visual indicators for the quick check reducing the job of multimeter testing This can be used to check ...

Here is a simple tester for Hobbyists. This LED Component tester can test the integrity of electronic components from resistors to ICs before soldering. It reduces the job of testing the components ...

If you’ve worked on a project with small LEDs, you know the frustration of determining their polarity. This ingenious LED Probe from [David] packs a lot of useful features into a simple, ...