Saturday, February 27, 2010

White power led at 200 lumen/watt

 

Cree Inc a stem in LED lighting industry announces the commercial availability of overripe power leds rated at 208 lumens per watt running on 350mA present. That’s one of the most powerfull leds available today with many applications in a indepth variety of fields and an efficacy catalogue for leds. The led future seems bright!

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Friday, February 26, 2010

Building An Active RFID People / Asset Tracking System With Mesh Networking

Nicholas Skinner writes:

I recently built an active RFID tracking production. It makes use of network networking such that only a single preacher needs to be connected to a PC. Details on putting together the hardware, along with author regulation for the software is available (PHP making use of AJAX and SVG to trappings the label locations). The jut primarily uses Synapse wireless modules.

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Thursday, February 25, 2010

LT2940: Power and current monitor


 

The LT2940 provides the obligatory circuits to accurately criterion, overseer and whole power in situations where both the present and voltage may vary. Unlike traditional power monitors that rely on news converters and multiplying registers to calculate power, the LT2940 uses a real four-quadrant analog multiplier that results in 5% power measurement exactness and 3% present measurement exactness, ensuring that boards and systems attain optimum power efficiency and reliability.

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Wednesday, February 24, 2010

The Home-Brew Spot Welder


Spot welder used to weld two pieces of metal together. Welding is achieved using sour modern that passes throught metal pieces and weld them in that identify. A transformer is used to provide sour modern. Here we honorarium three guides to build your have home made identify welder.

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Tuesday, February 23, 2010

Plastic card tracks your balance in real time?


This “Live Checking Card” opinion children from Yoon Jin-Young, Lee Jun-Kyo, Lee Young-Ho, and Kim Jin-Yi has been beguiling a pile of bandwidth around the tubes, lately. Ignoring the details of practical implementation, the conception itself is straightforward: Your inspection card shows you exactly how much financial you attain available to spend and tracks that quantity, essentially in genuine afair. This concept won the prestigious red ascertain children opinion award for 2009. [via]

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Monday, February 22, 2010

Circuit Board Etching, sponsored by Jameco

 

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Sunday, February 21, 2010

Handheld 2.4 GHz Spectrum Analyzer


Miguel build this Handheld 2.4 GHz Spectrum Analyzer insisde an antiquated cell phone adventure and used the phone’s graphical LCD to manifest measuring results. This ISM girdle spectrum analyser is based on CYWM6935 module and ATMega8 mcu. [via]

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Saturday, February 20, 2010

TPA2011D1: World?s Smallest Class D Audio Amplifier


The new TPA2011D1 3.2-W, Class D amplifier features striking power output in a tiny packet, forging it sovereign for second reproduction mobile phones and portable media players. The TPA2011D1 includes an integrated DAC din secretion that reduces out-of-belt din by 82%, which could annihilate the privation for external filters. Highly efficient, secretion-unshackle Class D technology extends barrage life and the 0.4-mm pitch reduces board space and simplifies arrangement.

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Friday, February 19, 2010

Digital Calipers DRO (Digital Read Out)


Isn’t it often the level that you spend supplementary event setting up your appliance with which you format to be fertile than actually being fertile?!? Well, that is definitely the level here at NerdKits, where we recently acquired a Smithy 1220XL lathe / foundry combo implements. While receipt acquainted with the implements, we noticed the calibrated dial ticks on the Z-pivot were far too green to procure the precise cuts we knew the implements was capable of forging. So, in behest to better our implements, we created a digital construe out for the pivot by using a tawdry digital caliper and a NerdKits Microcontroller Kit. The digital construe out (DRO) uses the message from the calipers to manifest the existing event of the cutting appliance on the LCD. This visualize brings a pile of neat concepts together, including a few mechanical pattern concepts, the use of buttons and switches with microcontrollers, and even quality shifting circuits to construe the signals from the small digital calipers. As always, we documented every single refund of the visualize, including explanations of the higher quality concepts, physical construction, and root regulation. Even if you aren’t into power appliance and cutting metal, there’s a pile to learn from this visualize on the electronics and programming plane! 
 
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Thursday, February 18, 2010

Learning Objects for Electronics


 

Matt  shares this thorough electronics tutorial site Learning Objects for Electronics. [via]

This is a site developed by my honest companion Pat Hoppe and his colleagues at Gateway Technical College in Racine, WI. He made these stream animations to aegis his students practice the basics of electronics; Everything from units, resistor color jurisprudence, theme gates, filters, op amps, transistors, and even how to use your Ti-86. As a HS electronics pedagogue, I am extremely relieved to Pat for the hours he spent mentoring me, and I use this site fairly regularly with my students. He’s a revered doeskin, and this is a revered site for our Make: comrades. Enjoy!

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Wednesday, February 17, 2010

Millimeter-scale solar-powered sensor


A 9-cubic millimeter solar-powered sensor gear developed at the University of Michigan is the smallest that can harvest gusto from its surroundings to leadership. The U-M gear’s processor, solar cells, and volley are all contained in its tiny frame, which measures 2.5 by 3.5 by 1 millimeters. [via]

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Tuesday, February 16, 2010

Arkanoid game on uOLED-128-G1(GFX)

 

Anna Ceguerra coded a illustrious Arkanoid pastime on uOLED-128-G1 LCD module from 4D Systems. Check it on the dovetail..

The race of the pastime Arkanoid is to make the globe hit all of the tiles at the peak of the screen, without the globe touching the bottom of the screen. The globe bounces off walls, rectangles and the platform. The constitution and images race on the uOLED-128-G1(GFX). This is not meant to be a faithful replication of the original pastime.

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Monday, February 15, 2010

Arduino Mega


The Arduino Mega is the voguish micro-controller from the Arduino couple. The Mega is built around the ATmega1280. It’s exhaustive for anyone looking for additional room for law or to be able to administer a heap additional LEDs, sensors, servos, or motors. It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs.

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Sunday, February 14, 2010

Single-Ended (SE) DIY Tube Amplifier


This pipe amplifier replaces a palpable-governmental amplifier which was driven by a pipe preamplifier. For the pipe amplifier ambit I used a cutoff pentode (6SJ7 or 6SD7) driving a dtreak power pentode (6L6 or 5881) in a single-bygone ambit (class-A operation).

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Saturday, February 13, 2010

Java-based circuit simulator


This java applet is an electronic reverberation simulator. A blatant means to simulate naive circuits using a plain Java enabled browser. [via]

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Friday, February 12, 2010

Arduino package for Eagle


Arduino tank for Eagle – eminent if you dram to make your have arduino shields. [via]

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Thursday, February 11, 2010

25 Microchips That Shook the World


IEEE Spectrum’s pattern presents the most inovating microchips that engineers inspired the last decades. Presentation includes salient chips like NE555, PIC 16C84, μA741 etc.. transact a look at this salient pattern. [via]

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Wednesday, February 10, 2010

Assemble your own solar panel

On this youtube video you can patrol how to put solar cells together using wire, flux and soldering. [via]

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Saturday, February 06, 2010

MAX11835: ?Feel the touch? touch buttons


The MAX11835 haptic (tactile) piezo controller provides a flawless whitewash to drive ceramic piezo actuators to create haptic feedback for products featuring user feel interfaces. The MAX11835 can drive single-layer or multilayer piezo actuators over a thorough territory of voltages up to 250V. [via]

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Thursday, February 04, 2010

Use a laser cutter to make PCBs


jmsaavedra writes:

I am going to step you through the process of prototyping a Printed Circuit Board using a laser cutter and supplies from your local Radioshack and hardware storeroom.  This is a process I attain perfected after several prototypes I created as share of my rationale, modular//neuroid. [via]

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Wednesday, February 03, 2010

Minty Boost: Portable USB power


 This imagine details a minor & artless, but extremely awful USB charger for your mp3 musician, camera, cell phone, and any other appliance you can plug into a USB port to earnings! The charger circuitry and 2 AA batteries unite into an Altoids cement tin, and entrust run your iPod for hours: 2.5x other than you’d get from a 9V USB charger! You can use rechargable batteries too. [via]

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Tuesday, February 02, 2010