In keeping in line with their KISS philosophy, the littleBits Arduino module does not offer (easy) access to the full range of analog and digital I/O options that can be found on regular Arduino boards like the Arduino Uno. As a matter of fact, the littleBits Arduino only provides 3 bitSnap inputs and 3 bitSnap …
Tag: electronics
Jul 06 2015
DIY littleBits Perf Module
The littleBits modular electronics system is great for rapidly prototyping electronics circuits, but what happens if you want to use an element, switch, sensor, actuator, etc., for which a module does not exist? Fortunately, littleBits provides three different solutions for the problem. Two of these are ready to go modules: the Proto Module and the …
Dec 27 2014
Ammeters and Internal Resistance
Question: Based on your previous post regarding voltmeters and internal resistance, I can safely assume that an ammeter must also have some internal resistance. What effect does this resistance have on current measurements, and what resistance value would minimize any error it introduces to the reading? Answer: It is indeed true that an ammeter must …
Nov 24 2014
Voltmeters and Internal Resistance
Question: Does a voltmeter have any internal resistance, and if so, what, if any, affect does it have on voltage readings? Answer: Even if you have no electrical experience at all, I would hope that your answer to the first part of the question was, “yes.” Otherwise this would turn out to be an incredibly short …
Nov 15 2014
Euler’s Formula
Besides being an obvious lady killer, Swiss mathematician Leonhard Euler gifted the world with some pretty important mathematical concepts, notational conventions, and formulas. I almost feel bad about the fact that I couldn’t even spell his name correctly until I was well into adulthood. You are probably thinking, “Sure, he had a bitchin’ robe, and for …
Nov 08 2014
Finally Bought an Arduino Yun
I’ve had my eye on the Arduino Yun since it came out, but between an Uno, a Duemilanove, and a handful of shields, I always had something to play with and hadn’t run into any limitations that justified picking one up at the expense of some other shiny, new toy. Last week, however, a perfect storm …
Feb 04 2006
Robosapien Creator Mark Tilden Interviewed
I’m a little bit late posting today so by now just about everybody else has already reported this, but in case you missed it (or in case NeuralDump is your sole source for news), You-Review.net has posted an interview with Mark Tilden, the controversial roboticist who’s responsible for the immensely popular line of WowWee robots …
Oct 19 2005
Cyborg Humidity Gauge
Nature.com has published an article about the work of Ravi Saraf, a chemist from the University of Nebraska, Lincoln and his student Vikas Berry in integrating living bacteria into an electrical circuit that is part of a humidity-detecting device. While there have been other instances of circuits built to react to microorganisms, this “cellborg,” as …