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SparkFun? SparkFun is an online retail store that sells the bits and pieces to make your electronics projects possible. Whether it's a robot that can cook your breakfast or a GPS cat tracking device, our products and resources are designed to make the world of electronics more accessible to the average person. In addition to products, SparkFun also offers classes and a number of online tutorials designed to help educate individuals in the wonderful world of embedded electronics.

Système canadien de référence spatiale - Calcul inverse géodésique Démonstration en ligne News: CGVD2013 is now available! Natural Resources Canada has released the Canadian Geodetic Vertical Datum of 2013 (CGVD2013), which is now the new reference standard for heights across Canada. This new height reference system is replacing the Canadian Geodetic Vertical Datum of 1928 (CGVD28), which was adopted officially by an Order in Council in 1935. learn about the 555 The 555 Integrated Circuit (IC) is an easy to use timer that has many applications. It is widely used in electronic circuits and this popularity means it is also very cheap to purchase, typically costing around 30p. A 'dual' version called the 556 is also available which includes two independent 555 ICs in one package. For the 555 to function it relies on both analogue and digital electronic techniques, but if we consider its output only, it can be thought of as a digital device. The output can be in one of two states at any time, the first state is the 'low' state, which is 0v. The second state is the 'high' state, which is the voltage Vs (The voltage of your power supply which can be anything from 4.5 to 15v. 18v absolute maximum).

Tutorials New! Getting Started with LTspice LTspice is a high performance SPICE simulator, schematic capture and waveform viewer with an impressive library of passive devices. Weller Magnastat Autopsy and Repair » Code and Life Immediately after soldering together my USB password thingy, my solder iron, the family heirloom Weller Magnastat stopped working. Some investigation showed that the base station was providing 24V AC voltage just fine, so I decided to unassemble the handpiece to see if something could be done. Here’s what I found:

Build Your Own Lenses Nikon, Canon, Leica, Pentax, Sigma, Tokina, and a host of other lens makers are all striving to bring you the sharpest lenses with all optical aberrations reduced to the minimum. That’s too bad! Because with lenses, as with life, sometimes it’s the imperfections that make things interesting. The image on the left was shot with the imperfect optics of a homemade lens.

WHAT IS ELECTRICITY? Many people have asked me, "What is Electricity"? It's a great question. I get really excited when I think of all the latest technical advances in electronics. You see electricity in action all around you. List of single-board computers One of the first 10 MMD-1s, a prototype unit, produced by E&L Instruments in 1976. The "dyna-micro"/"MMD-1" was the world's first true single board computer.[citation needed] The MMD-1 had all components on a single printed circuit board, including memory, I/O, user input device, and a display. Nothing external to the single board except power was required to both program and run the MMD-1. The original design of the MMD-1 was called the "dyna-micro", but it was soon re-branded as the "MMD-1" List of single-board computers – computers built on a single circuit board, with microprocessor(s), memory, input/output (I/O) and other features required of a functional computer.

Arduino on a prototype board Arduino is a great prototyping platform and most of you probably know already about it. If not, check out the Arduino pages and the Arduino playground and dive into it. A couple of month ago I ordered my first Arduino board. It was one of the Diecimila revision. basic electronics LAST MODIFIED: Wednesday, 18-Mar-2015 17:25:56 PDT Authored by Ian C. Purdie VK2TIP Find us on Google+ •NEW! Marcin Jakubowski See also Marcin Log and Marcin Jakubowski Headshots Marcin Jakubowski last updated January, 2011 WHO are you? Name/Nationality/Ethnicity - Marcin Jakubowski, Polish American Location – what is your city and country? - Aptos, California, USA; Kansas City area, Missouri, USA Contact Information – opensourceecology at gmail dot com, Skype - marcin_ose Introductory Video- see this from August, 2010Resume/CV – Marcin Jakubowski Resume - old resume until end of grad school.

/diy/ DIYDSP - Electronic Music Instruments All you need to know about mini-lathe, reviews, mods, capabilites, accesories etc. Informational pictures pictures by sentenal01 - Photobucket (Better known as INFOGRAPHICS) Like the one before, infopictures. (Better known as INFOGRAPHICS) How voltage, current, and resistance relate : Ohm's Law An electric circuit is formed when a conductive path is created to allow free electrons to continuously move. This continuous movement of free electrons through the conductors of a circuit is called a current, and it is often referred to in terms of "flow," just like the flow of a liquid through a hollow pipe. The force motivating electrons to "flow" in a circuit is called voltage. Voltage is a specific measure of potential energy that is always relative between two points. When we speak of a certain amount of voltage being present in a circuit, we are referring to the measurement of how much potential energy exists to move electrons from one particular point in that circuit to another particular point.