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How-to: Parabolic Microphone
2007-12-03 12:33:12
Jim Lee: “It looks pretty good, weighs practically nothing, and disassembles easily. This paint roller handle is actually adjustable. Just a twist of the handle and it extends up to 19 inches. The umbrella itself opens to about 19 inches in diameter. It is necessary to remove the headband and punch a hole in the very top for the handle. Otherwise, no modificatins to the umbrella are needed. As for the handle, remove the plastic roller holders, file off the little burrs that hold them on, and you are in business.” My opinion :  you can use it as fun project and discover some electronics, or you can use it as a spy-project which i don’t encourage because it could get you in trouble. Be careful how you use it, good luck building it! here is the Link to authors page


Light Activated LED
2007-12-13 23:26:18
    Evil Mad Scientist Laboratories presents us with a cool and simple project. I think this will catch your eyes because its very simple to build and the effect is cool. I know that in my first year of electronics i wanted to build something like this, and had to do allot of search on the internet to find something like this and was much more complicated than this schematic. So beginners can do this project without a problem. How it works ? The circuit is based on a LTR-4206E phototransistor. The black package blocks visible light, so it is only sensitive to infrared light– it sees sunlight and incandescent lights, but not fluorescent or (most) discharge lamps it really will come on at night. And the rest is history, start building it right now and you will see how cool it is. Follow the link for full project info Link.


Simple Led Christmass Tree
2007-12-13 23:02:08
    Very Simple indeed, just a bunch of led’s and resistors stuck together to create a Christmas tree. The project is very recommended to beginners. You can just build one to see how it works or you can make as many of them as you need(maybe you want to decorate something with these). The top led is a red/green flashing led, you can buy this from anywhere and if you connect them to power they will start blinking. The diagram though very simple is in the Flickr set. Good luck building it.


USB iPOD Charger based on REG1117A
2008-03-11 06:07:10
I think this subject will always get new project because of the spread of the ipods. People will always want to charge their iPods when their away or any mod to an iPod will always show interest for the public. The circuit’s pretty simple, basicly it’s just a voltage regulator. Both the LM317 and the REG1117A [...]
Read more: Charger

DIY Dual Fan Controller Project
2008-03-11 06:01:56
The project helps you control two fan’s to cool whatever you need. It works by cooling with the first fan when the sensor detects a user adjustable temperature, and it turns the second fan on, when the temperature exceeds 5 degrees over the user adjusted temperature. I agree with the author on these being the most [...]
Read more: Project

DIY Seismometer
2008-03-11 05:53:37
  This project will help you record earthquakes from around the world and start your amateur seismology projects.. The Seismometer is fairly easy to build and doesn’t require any fancy parts, just your usual electronics store or radio shack will do just fine for the parts supply. There is though an expensive part of this [...]


Every Man Want This LCD TV
2008-03-10 08:01:43
Nrx2005 What Every Man Wants in Bed - For more funny videos, click here Yeah i know, i said the same thing when i first saw it “woow!”. This is one cool gadget that every man wants to have in its bedroom. At the beginning of the movie i didn’t knew what to expect, it first [...]


Keylogger found in Dell 600m laptop
2008-03-10 07:57:28
The owner of a Dell 600m laptop found a keylogger inside his Dell laptop attached to the Keyboard cable. The keylogger board contained an atmel AT45D041A 4 megabit flash memory chip and one Microchip PIC16F876. You can read its full story from the link bellow. Keylogger found in Dell 600m laptop: [Link] Related posts No related posts.


Optimus Tactus Keyboard
2008-03-10 07:52:13
Although its just a concept, i’m guessing that if this gadget hit’s the market it will be a success. Much of it success will depend on its price though, so if they manage to produce this Keyboard at a reasonable price i will sure get one. Yes, its worth investing some money into a Keyboard [...]
Read more: Optimus

Atmel Introduces AVR MCUs with Unique Combination of USB, Battery Charging and Analog Features
2008-03-10 07:43:43
atmel Corporation has just announced a new range of AVR microcontrollers that will be able to combine usb controller and high performance analog features. Both the ATmega16U4 and ATmega32U4 are able to reduce system cost in battery powered devices like gaming accessories. Currently, modern batteries require sophisticated algorithms that accelerate and optimize charging, and usb [...]
Read more: Combination , Charging , Analog

DIY Ni-Cd and Ni-Mh Charger
2008-03-10 07:37:55
  Based on the CBAT819 charger (a programmable microprocessor), the charger can be used to charge Ni-Cd and Ni-Mh battery’s and controlled via a digital interface. DIY Ni-Cd and Ni-Mh Charger : [Link] Related posts Volume Limiter Circuit (0) Tv remote jammer (1) Some info about home made laser’s (1) Serial port infrared receiver (0) Rainbow LED Chaser (0)


DIY Metal Detector
2008-03-10 07:31:28
Here is a nice instructable written by JoelDude who build its first metal detector with info&schematics gathered from the web. He wasn’t pleased with the websites offering incomplete information on building a metal detector so he decided to write the instructable so other can build their own metal detector. DIY Metal Detector : [Link] Related posts Volume Limiter Circuit [...]


Xbox controller converted to pc gamedpad
2008-03-09 15:32:30
This could be useful for those of you who have an Xbox that you don’t use. The job is more easier to be done than to be explained. The Xbox controller already has usb connection, except it has a funky connector, so its just a matter of removing the original connector and soldering a standard [...]
Read more: converted

Arduino mobile processing
2008-03-13 13:24:34
The author writes: The brain of the system is really on the arduino or the web page the phone requests. . . The phone just passes any data it sees back and forth. . .For the phone app to run, it needs the URL of a server and the path to a web page. Once that [...]
Read more: Arduino

Ethernet Weather Station
2008-03-13 13:03:31
This is a weather station with a build-in webserver. The system is modular design you can either build a pure Ethernet weather station or an Ethenet weather station with an additional local LCD display.The weather station has two temperature sensors(LM335) and one MPX4115A which an absolute air pressure sensor from Motorola/Freescale both sensors controled by [...]
Read more: Station

Underwater CVS Camcorder
2008-03-13 12:51:48
  Everett Bradford wrote this article on how to hack a CVS camcorder and transform it into an underwater CVS Camcorder . I can’t find a real everyday use for this project, but if its fun to work on it, why not do it. Underwater CVS Camcorder: [Link] Related posts Surveyor SRV-1 Blackfin Robot with onboard camera (0) Spy Cam hidden [...]


IC Binary Clock
2008-03-13 06:05:20
The author writes: As this was my first refresher in electronics in over a decade, I decided to do it the old-school way with ICs. The resulting circuit is larger and less flexible than if I had used a Micro-controller but it’s what I know so was a good exercise. IC Binary Clock : [Via] Related posts Simple Led Christmass [...]


CVS Camcorder based night vision
2008-03-13 05:58:25
1. RE-USE THE CAM First it had to have USB added to take videos off. I prefer to do this by sticking a male connector right out of the side of the camera instead of a port. 2. MAKE IT INFRARED Then the infrared filter was removed. I found instructions somewhere on the camerahacks forum for [...]
Read more: Camcorder , vision

AVR Sound Player
2008-03-13 05:40:51
Using the term ‘music’ liberally here, it will play a squeaky, but recognizable stream of audio, generated from MIDI files. It’s a satisfying little project that is a nice change from the typical beginner embedded controller blinking LED project(s).Once loaded, wired, and powered up, it will play the selected audio file repeatedly. In this case, [...]
Read more: Sound

Hand Powered Shake LED Flashlight
2008-03-13 05:31:27
The concept behind the shake powered LED flashlight is quite simple and it has been around for a while, but what i like at this project is the way its presented. Very nice indeed, with lots of picture’s and informations so this type of projects are always recommended for beginners. You should definitely give this [...]
Read more: Shake , Flashlight

DIY Slave Camera Flash
2008-03-13 05:24:22
Matt Mets wanted to add a slave flash for his camera so he started working on this project by dismounting a flash from an old camera he had around. After doing some research on other projects with the same subject he was forced to build a clock to control the inverter because the original one [...]
Read more: Slave , Camera , Flash

AVR ISP programmer parallel interface
2008-03-13 05:17:27
This board can be used to program AVR Atmel microcontroller’s from a parallel printer LPT1 using ISP functionality In System Programming. This type of programing is preferred by many people because you don’t need to move the microcontroller to a programing board, you program it directly on the target [...]


AVR and LM35 Thermometer
2008-03-13 05:11:56
For this project the author used the LM35 from National Semiconductor which is a precision temperature sensor. It has a range of -55ºC to +150ºC and a accuracy of ±0.5ºC. In this project the output voltage of the LM35 is converted by the AD convertor of the AT Mega8 and than displayed [...]


DIY Wireless receiver and transmitter
2008-03-15 04:48:46
These days RF capabilities are present in almost all embeded applications and by RF i mean wireless transmission of data. The receiver and transmitter boards (RLP & TLP 315) for this project are cheap RF modules manufactured by Laipac Technologies. The frequency on which the receiver and transmitter pair works is 315 MHz, UHF (Ultra [...]
Read more: Wireless

Bling Bling $40000 iPod Shuffle
2008-03-15 04:19:35
Yes they’ve done it, the most expensive iPod Shuffle is an iPod Shuffle made from solid 18 karat white and pink gold and with 430 diamonds on it. Personally I’m not a fan of the bling bling industry and i would never buy something like this, but we need to consider that this iPod Shuffle [...]
Read more: Bling

PSP Push-Activated Shoulder Button Lighting
2008-03-14 07:11:23
Sony decided to make the PSP shoulder buttons transparent, leaving modders an excellent opportunity to make the device look way cooler with lighting. Llamma has done a write up on adding lights to the buttons. I wanted a similar effect, but not for the lights to be on all the time. I wanted the buttons [...]
Read more: Shoulder , Lighting

PIR Camera
2008-03-14 07:04:50
  When the sensor detects movement in a room it will take a burst of 10 photos with the digital camera. Each photo is taken at 0.5sec interval. After the 10 photos, the camera waits 3 seconds for further movement and if it is detected, the process is repeated until 80 photos are taken. The photos can [...]
Read more: Camera

PIC12F629 In-Circuit Programming
2008-03-14 07:01:39
The board contains a number of LEDs and components so a simple program can be produced and tested. You can add more components if required. The photo shows the PIC chip soldered to the board and 5 short tinned copper wires to create connectors for the 8-pin programming plug. The outline on the board [...]
Read more: Circuit , Programming

Infrared remote control receiver for Arduino
2008-03-14 06:55:05
The author writes: I developed this infrared remote control decoder for Arduino on my Arduino-compatible STK500 evaluation board for Atmel’s AVRs. The sketch is pretty much standard C code so porting to non-arduino dev systems is almost immediate. Infrared remote control receiver for Arduino: [Link] Related posts Gmail Light Cube - New Email Notifier (0) DIY Knight Rider Light [...]


Wireless Security System
2008-03-14 06:46:41
A burglar alarm with motion detectors and a wireless remote alarm station comprise the effective IR Wireless Security System . An ATmega16 microcontroller is the heart of the design. Wireless Security System: [Via] Related posts Wireless Rocket Launch Control System (0) USBtinyISP: AVR programmer & SPI interface (0) Scrolling text display generated on 50×7 LED matrix with AVR AT 90S2313 (0) Morse [...]
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