Month: October 2015
![Arduino Project: MP3 player using Arduino and DFPlayer mini MP3 player module Arduino Project: MP3 player using Arduino and DFPlayer mini MP3 player module](https://www.electronics-lab.com/wp-content/uploads/2015/10/arduino-project-mp3-player-using.jpg)
Arduino Project: MP3 player using Arduino and DFPlayer mini MP3 player module
Building an MP3 player with Arduino is extremely easy. We use the DFPlayer mini in order to build a simple MP3 player. The MP3 player has 3 buttons, in order to Play/Pause, to load the next song and one in order to load the previous song. In this video we are using an Arduino Uno, but...
Continue Reading![Understanding silicon circuits: inside the ubiquitous 741 op amp Understanding silicon circuits: inside the ubiquitous 741 op amp](https://www.electronics-lab.com/wp-content/uploads/2015/10/clean-scaled-small.png)
Understanding silicon circuits: inside the ubiquitous 741 op amp
Ken Shirriff's blog looks inside the famous 741 OPMAP and discuss how it's made and how it's working: The 741 op amp is one of the most famous and popular ICs[1] with hundreds of millions sold since its invention in 1968 by famous IC designer Dave Fullagar. In this article, I look at...
Continue Reading![Elektor DDS Function Generator Elektor DDS Function Generator](https://www.electronics-lab.com/wp-content/uploads/2015/10/DDS_Function_Generator-e1446196156361.png)
Elektor DDS Function Generator
this is a DDS Funtion Generator by Theodorou Gerasimos: DDS chips are readily available, greatly simplifying the design of the analog part of a wide-range function- or signal generator. All you need to do (they say!) is choose one, add some suitable output circuitry, pick a...
Continue Reading![19″ system of enclosures will provide you unexpected space 19″ system of enclosures will provide you unexpected space](https://www.electronics-lab.com/wp-content/uploads/2015/10/obr1773_uvod-e1446195579495.jpg)
19″ system of enclosures will provide you unexpected space
With plug-in enclosures from Fischer Elektronik, it´s easy to solve placing your device into a 19“ „rack“. What enclosure to use for your electronic device and how to sort them when there are several ones on one place? That´s the question reaching almost to beginnings of...
Continue Reading![Sensor Technology for Health and Fitness Applications Sensor Technology for Health and Fitness Applications](https://www.electronics-lab.com/wp-content/uploads/2015/10/article-2015october-sensor-technology-for-fig2.jpg)
Sensor Technology for Health and Fitness Applications
By Jon Gabay @ digikey.com: Determining the state of our health has always been a matter of finding a way to monitor and measure the body’s most basic functions. Before instrumentation, visual indicators were used that allowed us to know, for example, what our body temperature...
Continue Reading![Website is Down Detector Website is Down Detector](https://www.electronics-lab.com/wp-content/uploads/2015/10/FWUSYL9IG9QWODU.MEDIUM.jpg)
Website is Down Detector
by jckelley @ instructables.com: If you work in a company that has a website, you know how important it is that the website always be up and running. That's why you constantly see "99.99999% reliability!" all over the fancy server hosting sites. A website can't make money if the...
Continue Reading![How to Make an Internet Speed Analyzer How to Make an Internet Speed Analyzer](https://www.electronics-lab.com/wp-content/uploads/2015/10/NewImage294-e1446192831208.png)
How to Make an Internet Speed Analyzer
This is an internet speed Analyzer based on Raspberry Pi: This application will run speedtest-cli against speedtest.net's servers using cron. It will then email the results daily and weekly. Also - using http://www.percheron-electronics.uk/shop/ e-paper hat - you can utilize the...
Continue Reading![Lie Detector and Biofeedback Arduino Based Lie Detector and Biofeedback Arduino Based](https://www.electronics-lab.com/wp-content/uploads/2015/10/FN6YDJIIE7JBRMO.MEDIUM.jpg)
Lie Detector and Biofeedback Arduino Based
by masteruan @ instructables.com: This tutorial will explain how to build a machine for biofeedback. But first a bit of theory. What is biofeedback? Biofeedback is the process of gaining greater awareness of many physiological functions primarily using instruments that provide...
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