Using an Arduino as a Latching Relay

I wrote this one hot week in July 2010. I've been leaving my front door ajar, to get some air through the house. Probably not a very good idea. So I thought I'd hook up an Arduino to ensure that no one takes advantage of the door being unlocked. This essay isn't meant, primarily, to tell you how to make a "fantastically useful" device. While the device is useful, and could be used for several things, the ma ...

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Lab 8: Shift Register and Binary

Topics: First Build The Circuit The Code Hardware Theory Overview-"Rollover Rollover" What is a Shift Register How the Arduino Controls the Shift Register Software Theory The shiftOut Function Binary Numbers Other Functions in the Code Exercise References 1. First Build It would be a really good idea to build this circuit before going to the lab because it is time consuming to connect all of the wires. 1.1 ...

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Control Two LEDS with an Arduino and bitVoicer

So what I want to do here is do several things with two LEDs with speech recognition I'm using bitvoicer you can get it here Step 1: Part List So I'm doing this with as little parts as I can, here's the list: Green LED Red LED Breadboard 1k Resistor Jumper Cables Computer Computer Mic(you can use a microphone Ardunio (I'm using the UNO but any kind will work) bitVoicer you can get that here Step 2: How to s ...

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How-to Guide

In this section we will explain exactly how you can create your own Amblone setup, consisting of 3 RGB LED strips and an Arduino Mega. What do I need? To create the Amblone setup described in this guide, you will need the following: Amblone software An Arduino microcontroller, for example the Arduino Mega A USB A to B cable RGB LED strips that can be manually controlled (make sure you are not buying some au ...

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Fading an LED off and on using Arduino

Demonstrates the use of the analogWrite() function in fading an LED off and on. AnalogWrite uses pulse width modulation (PWM), turning a digital pin on and off very quickly, to create a fading effect. Circuit Connect the anode (the longer, positive leg) of your LED to digital output pin 9 on your Arduino through a 220-ohm resistor. Connect the cathode (the shorter, negative leg) directly to ground. image de ...

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RC MOOD LYTE

RC MOOD LYTE is a commercial quality flameless light engine for heavy, everyday use in the home, restaurant, catering and hospitality industry ,a great improvement over the traditional wax candles in terms of safety and reliability features . LED Candles have No wax, No smoke, No heat, No mess. ECO BENEFITS Safety: eliminates fire danger and personal injury. Safe for small children too. Zero Emissions: no s ...

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Volcom RGB Desktop Light Box

Greetings! I'm Russell Petersen. I'm an engineer, inventor, designer, fabricator, and dreamer. I'm a junior Electrical Engineer by trade, located and working in the San Francisco Bay Area. I love playing with Solid State Lighting, and came up with this idea one night. Simply stated, It's a custom built light box with a logo adhered to the front, and lit by a RGB LED module. This project is easily adaptable ...

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DIY: Arduino Based Ohmmeter

This is a project based on Arduino board which can measure the unknown resistance values and perform diode test and continuity testing. When we connect the unknown resistor on the breadboard circuit, the 16x2 LCD displays the resistor value and when we connect a diode the LCD displays the type of diode if it is a good one. When we take the probes out from the breadboard and connect it across a continuous pa ...

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Arduino Powered Four Letter Word Generator

Build an Arduino-powered version of the "Four Letter Word Generator" (FLW). This version generates "words" on the fly - it does not use a list. The "original" version from the 1970's used B7971 nixie alphanumeric tubes. These tubes are getting hard to find and they're certainly expensive. They also require interfacing with high voltage and an understanding of multiplexing. This version uses a slightly more ...

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Accelerometer powered LED dress

Let's be honest for a moment, doesn't everyone want a dress that lights up at your very whim? No? Alright, well I do. It's pretty straightforward, though the programming gets a wee bit tricky. So pick up your pencil, sketch out a design and then we'll talk parts.Here Step 1: Material [box color="#985D00" bg="#FFF8CB" font="verdana" fontsize="14 " radius="20 " border="#985D12" float="right" head="Major Compo ...

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Arduino Based Lie Detector

We have previously posted the the project lie detector, now here is is also a lie detector using arduino. Here is a simple tutorial to build a simple lie detector which will give visual indication through LED arrangement whether the person speaks lie or truth. The project uses a arduino duemilanove or uno. So the project is based on arduino. But our final circuit will be standalone circuit without attached ...

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Arduino 7 Segment LED Display and Counter – Tutorial #8

This is a simple 0 to 9 counter circuit constructed using Arduino! Here, a common cathode 7-segment LED display is connected to Arduino for displaying the digits. The code (Arduino sketch) allows push button increment of the counter from 0 to 9. The whole circuit can be powered from a standard 9V PP3/6F22 battery, or from any suitable Arduino power adaptor.The seven segment display is infact a very simple d ...

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