Automatic Water Dispenser using Arduino About 71% of earth is covered with water, but sadly only 2.5% of it is drinking water. With rise in population, pollution and climate change, it is expected that by as soon as 2025 we will experience perennial water shortages. At one hand there are already minor disputes among nations and states for sharing river water on the other hand we as humans waste a lot of dri ...

Hello every one welcome back . In this project tutorial I will show you how to make arduino based home automation , this means you can control all of your home appliences  and devices using a single microcontroller . This Tutorial is divided into two part . In second part of this tutorial I will use RF communication module for  wireless home automation . Let us first upload this program to the circuit above ...

Hello welcome back . This is second part of the wireless home automation . In previous part we have connected home applience with relay and controlled with arduino . In this part we are going to add wireless feature of that device . One arduino is acts as remote controller ie transmitter which transmit input signal from buttons and another arduino receives those signal and switch on home appiliences accordi ...

Hello every body welcome back . In today's arduino blog I am going to show you how you can make a automatic door opening system when some one wants to enter your room the PIR motion sensor detects the motion of moving body and sends signal to arduino and motor just move in anticlockwise direction to open the door and after man enter the room the door will automatically closed  . This concept is used to open ...

Hello welcome back . In previous part  we have made a visitor detector by using PIR sensor . This application can be used on night because PIR sensor gives output based on thermal object movement . In this tutorial we are going to extend that project with  visitor counter part . First of all i want to apologize that I am unable to  add seven segment without adding extra IC  as promished, it’s because we are ...

Thanks to everyone who supported this project and voted for it in the Arduino Challenge! I was awarded second prize and hope to participate in more Arduino contests in the near future. This tutorial will explain a simple way to make a password protected bluetooth door lock using your Arduino, which can be unlocked by sending a four digit pin from your Android phone!  The hardware setup is quite simple,  and ...

Introduction The Rotary Emotiphone is a vintage rotary phone that tweets mood emoticons. It has a predefined list of 10 emoticons, each assigned to a digit, so that when you are happy / sad / drunk / etc., you pick up the handset and dial a mood. Could've gone for more complex messages using 2-digit code convention, but eventually decided to keep it simple. The idea was conceived while I was preparing portf ...

What can you make with fluorescent acrylic as the inspiration?  We chose to make a glow-in-the-dark baby mobile, with an accompanying toy.  This project was completed as a part of the Computing and Craft class at Olin College of Engineering. Materials: - Craft Materials: - Fluorescent acrylic (1 square foot of each of the following colors: pink, orange, yellow, green*) - Wooden dowels (8 feet of each of 1/4 ...

You know that feeling of driving away from your house almost getting to work and saying "Now Did close the garage door?" .  I hate that feeling and seeked out to resolve it in the smiplest/cheapest way I could.  The starting point was of course Arduino.  This project ended up being simpler than I could of imagined but it was not my best effort (as it was my first real project making something useful with th ...

My next door neighbors have recently been playing their music really loud so that I can hear it through the walls. I've gotten tired of having to bang on the walls each time to get them to quiet down, so I decided to automate some payback. The premise is that my device will listen for loud music playing through the wall, and when the volume breaks a pre-defined threshold and hears sustained music for 10 sec ...

UPDATES Mar 05, 2013 Featured on WonderHowTo http://goo.gl/fpeVC Feb 14, 2013 Featured on LifeHacker  http://goo.gl/tx4QG Feb 13, 2013  I have updated the Arduino program in step 4 to support additional remote controls. Feb 13, 2013 Featured on Dangerous Prototypes http://goo.gl/DJcwe Feb 12, 2013 Featured on Semageek  http://goo.gl/EH58K Feb 12, 2013 Featured on Embedds http://goo.gl/Z3egm Feb 12, 2013 Fea ...

Our first open source Homeland Security non-lethal weapon project - The "THE BEDAZZLER: A Do-it-yourself Handheld LED-Incapacitator". After attending a conference where the $1 million "sea-sick flashlight" (named "THE DAZZLER") was demonstrated by the US Dept. of Homeland Security, we decided to create our own version. For under $250, you can build your own dazzler and we've released the source code, schema ...