Archive | January, 2014

Measuring Small Resistances in Live Circuits

Dear Reader, Brian Benchoff just posted about this demo on Hackaday (Thanks!), and we thought we should add some commentary. Usually to measure resistance, one must remove the resistive element from the circuit and connect the meter across it. Sometimes that’s impractical or impossible. If you know the voltage across an element and the current […]

Power Factor in a Blender

Dear Reader, Recently Eric posted an educational entry on Power Factor. To demonstrate some of the AC measurement capabilities of the Mooshimeter, I set up a quick demo to measure power factor and harmonic distortion in a kitchen blender. Like many blenders of a certain era, it has two “Major” settings – Low and High […]

Mooshimeter <-> Tessel

Dear Reader, We’ve been talking to our friends at Technical Machine about the possibilities of integrating the Mooshimeter with their flagship product, the Tessel. The Tessel is “Hardware for the Web” – it’s an ARM Cortex M3 with a wifi connection (through a CC3000) and expansion slots for a wide variety of sensor modules.  The […]

Why the Multimeter?

Dear Reader, Welcome to the blog!  Here we’ll talk about whatever is new with Mooshim Engineering, electronics in general, technology, etc. Why reinvent the multimeter? In using our multimeters every day we realized many of the limitations we took for granted no longer made sense.  Our multimeters have stayed the same while the world changed […]