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Detects any metal at a short range
Metal proximity dectors can be very useful in robotics (contactless switch, assorting of metal and non-metal parts, etc.). The figure below shows a simple circuit, … Read more
Keeps chess games short and interesting by limiting each turn, alerting the user with a buzzer before time runs out.
This is a simple chess timer using a 20 pin AVR microcontroller.  It has up/down buttons on the front for adjusting the countdown time and an arcade button on top … Read more
Monitors room temperature
Hi everybody! Just finished with my new little gadget and feel like sharing with LMR. :) The gadget is room temperature monitor for our baby we are waiting to have … Read more
Camera controller for time lapse photography, flash control, external event trigger
For my second hobby, photography, I need an intervalometer to make time-lapse photography. Before building one from scratch I searched for a ready-to-use Arduino … Read more
This is my new project, containing a cluster model rocket with integrated mini DV camcorder and a Picaxe based rocket launch controller with 2 digit 7 segment … Read more
Signals when mail is delivered
Last winter my father asked me if I could make a mailbox sensor for him. That winter was long and cold with lots of snow and he found it frustrating to make his way … Read more
The Crystal Ball of Horror was my entry into the http://www.tinyclr.com/ Halloween contest. UPDATE: 11/11-2010 I got second place in the … Read more
So it was a long time since i wanted to play with a supercapacitor. I found a good deal on ebay for some 4F, 5.5V capacitor. The first thing i made is a micro … Read more
Displays amazing 3D animations
I've been looking around the web and I found these nifty cubes of LEDs. There weren't really clear instructions on to build one, but I feel like i can figure it … Read more
Introduction Sometimes it is necessary or at least ingesting to know how much current your circuit is drawing when connected to the USB port. You could detach it … Read more
Prototype Nitinol muscle wire devices
I've been really interested in Flexinol lately (aka Nitinol Muscle Wires).  I've come to a nice stopping point where I've put together some basic actuators and a … Read more
Since October 2007 I developed new object recognition algorithm "Associative Video Memory" (AVM). Algorithm AVM uses a principle of multilevel decomposition of … Read more
Will hopefully reach an altitude of 35km
This is one of our projects for the Google Lunar X Prize. We will launch a 2 m diameter hydrogen weather balloon coming Saturday nearby Nanjing, China. The payload … Read more
Marine Aquarium Controlled by MRS1
I like robots but I also like fish. I used to keep a large sea aquarium and due to moving arround and work I had to get rid of it. Bummer. But now I convinced my … Read more
A cheap LED matrix driver run by an Arduino
I’ve set out designing what I’d like to call Arduquee, a Arduino powered Marquee. The idea is this, low cost LED matrix driver boards that are easy to work … Read more
Fades and flashes and keeps away the closet monster
Insired by Geir Andersen's RGB Nightlight, I thought I'd build one for my daughter. She's just started having nightmares (she's 3 years old) and wants the lights … Read more
Control your TV, DVD, Stereo, DVR, Cable box, Mac, Xbox, or any other IR device with the Web Clicker! The Web Clicker is a web server & IR transceiver.  You … Read more
Controlls any robot which has a Bluetooth reciever
Hi....           I am building a software wich controls a robot via bluetooth.... It sends out data to the virtual port created with the Bluetooth … Read more