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 […]

The two voltage channels share a common line.

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 […]

Will It Blend: PF Setup

Why do I care about Power Factor?

Bad power factors cost you money in the form of extra wire losses and increased strain on the power infrastructure.  They reduce the amount of usable energy a circuit can provide but are often overlooked because they can be difficult to measure.  This post talks about what power factor does to a system and how […]

We are funded! Next up: Stretch Goals

The Mooshimeter crowdfunding campaign has hit its goal with more than a month remaining!  It has been a real trip so far, and I’ve already blown through one keyboard’s F5 key tracking progress.  Now we get to further refine the Mooshimeter to better suit your needs, based on your comments, suggestions, and stories.  To that end, […]

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 […]