While using a digital multimeter to diagnose electrical problems on customers’ equipment, I frequently hear the comment, “I’ve got one of those multimeter things, but I never learned how to use it.” ...

Many smartphones have fast wired and Qi charging, but both are reduced by various optimizations to maintain your battery.

As reported by Hackaday, the colourfully named 'USB and more tester' can be bought via Tindie for $60, though it has been ...