Max Step 1 First, you will need a green laser. I recommend anything 125 mW and above. For this DIY (Do it yourself) I was sponsored with a Spartan 250 mW green laser. You also need a diffractive glass that will distribute the green laser beams. I ...
11-05-2008
M. Batek Make a sound card is no more a complex issue. If you use great IC PCM2702 from BURR BROWN / Texas Instruments you can create a fully functional USB sound card. This sound card can be powered from USB port and has one stereo output. You ...
07-05-2008
After seeing so many applications using acceleromters making a simple project of my own with this cool sensor just seemed natural. The main application of the accelerometer is either for sensing tilt or sensing acceleration. For this application A ...
30-04-2008
Tillmann Steinbrecher CPU coolers have been getting more and more efficient over the last years. However, this higher performance usually has a price: More noise. Noise is annoing and reduces well-being and productivity - so why not do something ...
28-04-2008
This project started out as a gag project, a Nuclear War Detector. The idea was to make a device that would flash a little red light if a nuclear attack were underway or if there were some sort of massive radiation spill right outside the house. It ...
23-04-2008
After making my pyramid mood light with 12 high power leds, i decided to make a bigger and better version, without the emphasis on the low budget. After all, the pyramid mood lamp was more of a proof of concept with its shortcomings. I wanted the ...
17-04-2008
This is versatile development board for AVR microcontrollers ATmega 48/88/168. It is good for testing and debugging embedded programs. It has many built-in peripheries connected to microcontroller so you can use them without soldering. ATmega ...
16-04-2008
Let's start with the picture frame itself. I desided to make a picture frame to support five small passport sized portraits. I made a base in hardwood with two long grooves in which some sheets of polycarbonate could be inserted. I used a metal ...
16-04-2008
LTC1044
Refik Hadzialic This article should teach you how to build a simple heart monitoring device, ECG/EKG (electrocardiograph). Before I continue to explain what I did, I would like to WARN you! 500 mA on 220 V will completely destroy your nervous ...
15-04-2008
Joseph Yumul The experimenter's pot is a solid state potentiometer using Dallas semiconductor's DS1869 and National's LM78L05 two electrolytic capacitor two small push button switch and two optional Molex connector. This project is very useful ...
15-04-2008
By adding a transistor with some capacitors, diodes, and resistors, you can transform a pure-manual reset to an automatic reset with adjustable hold time for the reset IC. In most applications, the (manual-reset) pin usually connects to a switch to ...
11-04-2008
AD629, AD8603
The nominal 48V rail, which finds wide use in wireless base stations and other telecommunications equipment in network central offices, can vary from 48 to 60V. Measuring its current draw typically requires components that operate on 15V dual ...
09-04-2008
Relying on the dynamic conductance of optoisolators' junctions, simple optoisolator bridges compute the watts and volt-amperes of an ac load. W Stephen Woodward, Chapel Hill A decade or so ago, I designed a simple circuit that included a quad ...
08-04-2008
Atanua is a real-time logic simulator, designed to help in learning of basic boolean logic and electronics. It uses OpenGL hardware-accelerated rendering and a custom UI designed for a fast workflow and a very low learning curve, letting the ...
07-04-2008
Embeded AVR system for your car, based on ATMega MCU. Calculates statistics and control your car. Widely known as carputer, this system is designed for: calculating speed, fuel consumption, economy driving, e.t.c. displaying information about ...
07-04-2008
Jose Pino Usually quartz clocks breaks easily (specially if these are made in china) after a while. The gears loses lubrication and the dust gets the job done. Fortunately, the electronics of the clock works for many years without problem, so you ...
02-04-2008
Using Eagle3D and POV-Ray, you can make realistic 3D renderings of your PCBs. Eagle3D is a script for EAGLE Layout Editor. This will generate a ray tracing file, which will be sent to POV-Ray, which in turn will eventually pop out the finalized ...
01-04-2008
Geoff Nicholls You can build simple LED illuminators using the red LED to sense ambient-light level. Ordinary red LEDs normally function as light emitters, but they can also function as photosensors. A single LED can even function as both a light ...
01-04-2008
This circuit is for detecting any audio signal with justable noise offset. It could be used to generate a radio mute signal eg. from a PDA. The circuit is consisting of: Input impedance Signal amplifier Rectifier Justable comparator (Noise offset). ...
31-03-2008
Wichit Sirichote Easy build and use, the general purpose Big LED with SPI serial interfacing. Expandable for multiple digits but still uses only three wires for receiving data from any uC boards. The circuit uses a serial-in-parallel out shift ...
31-03-2008
All
Schematics