We don’t all need super high quality electronic testing gear. Sometimes second-hand or inexpensive equipment is accurate enough to get the job done. Though it can be a bit annoying to miss out on some ...

So a few months ago, I stumbled upon a thing at Adafruit.com called a "Charger Doctor" which was really just a Multimeter designed to slip inline with your USB cable. It was $7.50 and I liked it.

Drivers are a key element in the performance and reliability of LEDs, and an extensive range of equipment for testing LED drivers is now available from MDL Technologies. The Chroma instruments include ...