EEssential

The adapter is for an Android TV box, input 100-240VAC 50/60Hz 0.3A, output 5V 2A.  The item was in use for about four years. There is no sc...

 Both software evolves fast, so we compare the specific versions. Altium is a feature rich package, exceeding KiCad in all capabilities.  Ho...

KiCad has become increasingly capable of taking on large PCB designs.  It's good to take a look at the source code.  We'll try to th...

I have a spotlight lamp that runs off a small 6V lead acid battery which no longer holds charge.  I replaced it with some used laptop batter...

 The Microsoft wireless mouse takes two AA batteries in parallel.  Tests show that it can start at 0.8V and run down to 0.7V provided that t...

High-resolution multimeters use multi-slope ADC to digitize analog voltages.  Here we implement a multi-slope ADC on a PSoC5 device; all the...

We like to make use of the PC audio device for data acquisition.  Here we'll do some testing to understand the capability.  Most of the ...