High Sensitivity Light Sensor TSL230R + Arduino

A while back we covered the TEMT6000, a great little analog sensor for getting ambient light readings when you need something a bit more sensitive than a simple Photoresistor. Well in the spirit of documenting everything we can get our hands on, this week we will be taking the sensitivity to the next level with the TSL230R Light Intensity Sensor. I actually bought this a long time ago simply because it look ...

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Embedded Engineering

Hallo zu Deutsch Leser. Das ist mein erste Artikel auf Deutsch. I habe viel aufrufe aus Deutschland deshalb Jetzt ab, ich werde auch auf Deutsch publizieren weil ich Detusch lerne und ich möchte mehr Übungen.Jedes Artikel wird auf Deutsch und English.wenn wir Widerspruch zwischen dem Artikel auf Deutsch und Englisch haben, die English überwiegt weil meine erfahrungen auf deutsch kurze ist.      So beginnen ...

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Sensing Weight With A Flexiforce + Arduino

Felxiforce is a force sensor that is very similar to FSRs we just wrote about in principal. They change their resistance when you apply force to them. (The flexi part of the name is because they are flexible) Felxiforces are about twice as expensive as their FSR cousins, but these are much more stable, and are calibrated to a specific weight. You can buy them in 1, 25, or 100lb ratings. This article was wri ...

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Building the Colossus LED Display

The 2014 NC Maker Faire was a huge turning point for Maniacal Labs. It was there that the idea for the AllPixel and what is now BiblioPixel got their start. It’s also where we showed off our first custom-built LED display, the 24×24 LPD8806 matrix. At nearly 24 inches square, and 1 pixel per inch, it was certainly impressive. But we left the Maker Faire with a desire to go bigger. Not just more pixels… but ...

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Touch Sliders With A Softpot + Arduino

You all know the potentiometer, you turn it, and you can read on your arduino where it was turned to. Well 3M makes a product called the softpot that is a linear touch potentiometer. So instead of turning a knob, you touch it. The really nice thing about these is that they are great for prototypes because you can tell where someone touched it. So if you place a piece of paper with some printed buttons over ...

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ARDUINO BASED MPPT SOLAR CHARGE CONTROLLER

what is Mppt( Maximum power point tracking) ? "we use MPPT algorithm to get the maximum available power from the Photovoltaic module under certain conditions" How MPPT works  ? Why 150W solar panel does not equal to 150 w? For example you bought a new solar panel from the market which puts out 7 amps. under charge the setting of a battery is configured to 12 volts : 7 amps times 12 volts = 84w (P=V*I) You l ...

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Can You ID This? ID-20 RFID Reader + Arduino

A few weeks ago we showed you how to control your arduino over serial. Well this week are going to do the same thing. Only this time instead of using the serial monitor to send the commands, we will be using the Innovations ID line RFID reader. RFID, or Radio Frequency Identification, is basically a wireless barcode, and in this implementation works by a reader sending out a signal that powers a “tag”, the ...

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Don´t be afraid of heatsinks modifications

Perhaps everyone of us is familiar with a sentence mentioned in various catalogues, á la “upon request we can supply you a customized version”. Naturally that sounds good, but sometimes it is associated with a significantly higher price or with a considerable minimum order quantity (MOQ). That´s why we don´t want to generalize, as every producers behaves differently, but we´d rather like to mention one conc ...

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Turn on a light, or 10. Arduino control over serial

This is something I use all the time, so I figured I would share it with you. Controlling an Arduino over serial can be extremely simple if you let it, and extremely useful if you know how to use it. Many languages such as Processing and ActionScript 3 (with a proxy) have ways to communicate over serial, and typically you see people using this so they can display the output of an Arduino, or use firmata to ...

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Muxing Around With The CD74HC4067 + Arduino

Have you ever found yourself running out of pins to read an array of analog sensors? Don’t worry, you’re not alone, it happens to the best of us, and there is something you can do about it. An analog / digital multiplexer like the CD74HC4067 (mux for short) can help multiply the amount of pins you have, and it is insanely easy to connect to your arduino or other microcontroller The CD74HC4067 is a 16-Channe ...

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Signal Generation with MATLAB. Example of DTMF in telephony

In mathematics a signal is a real function of a real variable f(t). In electronics it represents the evolution of a voltage (or a current) over the time and depends on the performances of the stage of the amplifier. Through a memory buffer, samples move to a digital-to-analog converter that produces a voltage signal, after an  amplification stage that can limit the generation of the signal. A possible analy ...

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Tilt Sensing with the RPI-1031 + Arduino

Once in a while something comes out that I think is going to be really awesome, but when you get it, it is just so so. Im sure you all know what I mean… But yeah… This is one of those. The RPI-1031 available from sparkfun is a pretty simple (heck, it is dead simple) sensor for sensing when it is tilted. And it does this really well. But it seriously only does that. If it is not tilted, it freaks out and rep ...

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