PWM Control using Arduino – Learn to Control DC Motor Speed and LED Brightness

In this article we explain how to do PWM (Pulse Width Modulation) control using arduino. If you are new to electronics, we have a detailed article explaining pulse width modulation. We have explained PWM in this tutorial using 2 examples which will help you learn how to control LED brightness using PWM and how to control DC motor speed using PWM. PWM control using arduino. PWM control is a very commonly use ...

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Tilt Sensing Bracelet using Arduino

A bracelet decorated with six conductive fabric petals and a thread of beads with a metal bead at the end, makes for a simple six point tilt detection. It is also designed so that the metal bead will make contact with two petals if it lies in between. and then of course it will make no contact when it is in the air due to throw or tipped upside-down. This was really fun to make and the best part about it wa ...

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Twitter-powered Digilympics

Samuel Cox, a maker who defined himself as a mix of “design, ideas and technology“, has invented a brand-new competition for digital citizens: Digilympics. From his website: Under the hood, this funny race is enabled by a Processing sketch that seeks for Twitter replies on each account: a new reply triggers a motor-shield equipped Arduino board, which provides the movement to each athlet. More information c ...

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Homemade Arduino Friendly Pulse Sensor

I saw the Open Hardware Pulse Sensor at thought I'd try to make it at home.  Took me awhile, but here's my bumbling process. Step 1: Pulse Sensor -- Overview I've been working on re-making the the Open Hardware Pulse Sensor so it'd be "easy" to send off to OSHPark and make at home. I'm not sure but I think I started this project in March (2013) and I've just now finished it. The bit of encouragement I neede ...

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Make a Mini Arduino programmable 4 channel DC-DVM

This Instructable will teach you how to use the Arduino Analog ports. Digital Voltmeters (DVMs) are a special case of Analog to Digital converters- A/DCs.- they measure voltage - and are usually a function of a general purpose instrument called a Digital Multimeter( DMMs), commonly used to measure voltages in labs and in the field. DMMs display the measured voltage using LCDs or LEDs to display the result i ...

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An open robot shield for Arduino

Open Electronics‘ staff were looking for a common and standard hardware platform usable on different robots they were working on. Their goal was to find a single platform that had to provide power supply to the microcontroller, it had to provide stabilized voltage for the servos, and, finally, it had to be equipped with an obstacle detector and with an IR receiver. Having chosen Arduino as the target core b ...

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The Arduino Wifi Shield is now available

The Arduino Wifi Shield is finally here! We’ve been working for a while on this new wifi shield for Arduino that is quite different from what you can find already on the market. Instead of just getting the usual pre-made module we decided to build a product that would encourage hacking and modifications so we decided to use an AVR32 processor running an open source version of TCP/IP and the WIFI software st ...

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DIY Robotic Hand Controlled by a Glove and Arduino

This project idea came to me when I was sitting on a bed on a hotel room on vacation. I thought: "It'd be really neat to have a robotic hand that I can control with my own hand!" Upon returning home, I embarked upon a journey to design and create the project. I hope you enjoy! The basic components of the hand and glove are the hand itself, the servos, the Arduino, the glove, and the flex sensors. The glove ...

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High efficiency regulated Joule thief

Normally the Joule thief produces output voltage, which value is difficult to predict. Without load (the LED) I have measured voltages over 30 V. I wanted to create a Joule thief, which can be used to supply some small electronic devices, but having well defined and stable output voltage. There are known some solutions in which instead the LED load, a one-diode rectifier is used, and the output voltage is s ...

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Arduino Workshop a Roma 29-30 Sept 2012

Ecco il primo di una serie di workshop che Officine Arduino organizzerà in Italia. Quale luogo migliore da cui iniziare se non la capitale? Abbiamo parlato / immaginato / organizzato con molte persone in questi mesi – da Trieste in giù – ed il buon Alex Giordano lo ha già ribattezzato come il “Tour di Arduino“. Ci accontentiamo di portare workshop dove non sono mai stati, e quindi al Sud, nelle isole. Vogli ...

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Castelao Barcamp Vigo 2012

Desde BricoGeek nos llega la noticia de la celebración de una nueva Barcamp, esta vez en Vigo. La reunión perfecta para cacharrear y debatir entre amigos sobre temas como el Open Hardware, Arduino o impresoras 3D entre otros muchos, y puede que con alguna que otra sorpresa.   Unas jornadas DIY muy interesantes que tendrán lugar en las instalaciones del CFP Daniel Castelao de Vigo en las que Alejandro Taraci ...

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Fridge Door Detector Alarm

Has it ever happened to you to go to the fridge and discover that its door is slightly opened ... and probably most your food went to the trash ... Ghhhrr that jammed door that needs an extra push to make it close properly ....... This instructables will show you how to make an alarm system that will beep a buzzer if you leave the fridge door opened for a long time to remind to you to close the door. All ne ...

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