![Arduino Auto Power off. Make Arduino power off itself! Arduino Auto Power off. Make Arduino power off itself!](https://www.electronics-lab.com/wp-content/uploads/2016/04/arduino-auto-power-off-make-ardu.jpg)
Arduino Auto Power off. Make Arduino power off itself!
In this video educ8s.tv show us how to make Arduino power off itself with the help of a simple circuit! If you have watched some of my previous videos you will know that I like my projects to have minimal power consumption so that we can use them with batteries for a long period of...
Continue Reading![An almost-GHz active differential oscilloscope probe An almost-GHz active differential oscilloscope probe](https://www.electronics-lab.com/wp-content/uploads/2016/04/simulation-schematic-e1459609320604.png)
An almost-GHz active differential oscilloscope probe
Christer wanted to see how a 500MHz differential clock was behaving so he decided to build an active probe. To simulate the circuit he used TINA spice software and documented the process in three parts on his website. What I really wanted was an active differential probe...
Continue Reading![Easy Arduino Menus for Rotary Encoders Easy Arduino Menus for Rotary Encoders](https://www.electronics-lab.com/wp-content/uploads/2016/04/FB28BW4IMGJ9RAO.MEDIUM.jpg)
Easy Arduino Menus for Rotary Encoders
SimonM83 has posted a new tutorial on how to implement an Arduino menu using a rotary encoder. The tutorial goes through the hardware setup and sample code is provided. Rotary encoders with centre-push buttons are cool input hardware for projects, especially if you want to be able to...
Continue Reading![Polyphonic Synth Cable Polyphonic Synth Cable](https://www.electronics-lab.com/wp-content/uploads/2016/04/polyCable6-e1459504281455.jpg)
Polyphonic Synth Cable
Polyphonic MIDI Synth on an ATtiny2313: This is the fourth synthesizer cable I've built, the first three being based on the ATtiny85. I have been looking into ARM chips but haven't gotten to grips with them just yet. Instead, I decided go back to the ATtiny2313, which has a quarter...
Continue Reading![Elektor 500ppm LCR meter case tips Elektor 500ppm LCR meter case tips](https://www.electronics-lab.com/wp-content/uploads/2016/04/LCR-meter-600x402.jpg)
Elektor 500ppm LCR meter case tips
NopHead wrote a review of Elektor 500ppm LCR meter: I recently bought a 500ppm LCR meter from Elektor because I didn’t have anything for measuring inductors or the ESR (equivalent series resistance) of capacitors, both of which are important for modern electronics, particularly...
Continue Reading![Android app turns smartphones into a seismic network Android app turns smartphones into a seismic network](https://www.electronics-lab.com/wp-content/uploads/2016/04/20160215104808_MyShake-ScreenShot.jpg)
Android app turns smartphones into a seismic network
Researchers at UC Berkeley (California) have developed an Android app that can detect vibrations from earthquakes using the standard sensors integrated into smartphones. Android app turns smartphones into a seismic network -...
Continue Reading![Measure small LCs with a scope Measure small LCs with a scope](https://www.electronics-lab.com/wp-content/uploads/2016/04/measLC3.png)
Measure small LCs with a scope
Here is a simple way to measure an unknown inductance by forming a resonance LC circuit and measure it using an oscilloscope. Glen Chenier writes: One of our technicians recently asked for help determining the value of an SMT inductor. It was unmarked, and was many turns of very fine...
Continue Reading![Measure Stress Levels Using a Smartphone Measure Stress Levels Using a Smartphone](https://www.electronics-lab.com/wp-content/uploads/2016/03/device_measures_stress_levels_smartphones_medicalexpress.jpg)
Measure Stress Levels Using a Smartphone
Researchers have developed a smartphone device that measures the cortisol concentration in saliva in order to define your stress levels. The new test is done in under 10 minutes and there is no need to send a salvina sample on a lab. The cost for each measurement is less than 5$...
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