I think It's a very simple keypad , no more than $1 we can build it , that's good idea. Using parallel port and only 1 IC without Power supply.
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Friday, March 20, 2009
Keypad Using Parallel Port
I think It's a very simple keypad , no more than $1 we can build it , that's good idea. Using parallel port and only 1 IC without Power supply.
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Tuesday, October 28, 2008
Sunday, November 26, 2006
Control stepper motor through your computer's parallel port.
Buildan easy stepper motor driver that will allow you to precisely control aunipolar stepper motor through your computer's parallel port.
The project comes with a program that has easy to use graphicalinterface, allows you to control the motor speed, direction inreal-time and it also allows you to use and learn about differentstepping methods, such as single stepping, high torque stepping andhalf stepping modes.
Stepper motor controller also displays an animation that helps youvisualize the current as it flows through individual coils. It is awonderful tool to learn how stepper motors work.
The project comes with a program that has easy to use graphicalinterface, allows you to control the motor speed, direction inreal-time and it also allows you to use and learn about differentstepping methods, such as single stepping, high torque stepping andhalf stepping modes.
Stepper motor controller also displays an animation that helps youvisualize the current as it flows through individual coils. It is awonderful tool to learn how stepper motors work.
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Tuesday, October 03, 2006
It is late player MP3 with single chip of RHOM
It is late player MP3 with single chip of RHOM. It comprises controller 1.1/2.0, MP3 the decoder of USB, amplifier of ear-phone and the controller of system for the form of files of loading MP3 an ordering of instantaneous of USB, orders hard USB or orders CD-ROM of USB/DVD-ROM that all in an ordering of instantaneous of USB of chip AOnce is connected, BU9432 seeks automatically files MP3 for the playback. Accoustics is ordered by the tactile buttons; Play, pause, stop, nearest, preceding, Fol+, Fol-, +10, -10, Volume+, volume, repetition, random. Can BU9432 the information of posting also on option on the liquid crystal display such as the shirt #, file #. The playback Time (minute, second), the name and the file name.
U9432 of shirt can decode VBR MP3, MP2, MP1, layer 1, 2, 3 files with the rate of taking away: 8K - 48KHz and binary rate: 8Kbps - 448Kbps. It can also identify the ordering of instantaneous of hard USB FAT16 and FAT32/commande of the capacity of 32MB with 2TBytes. The audio playback is exceptionally good with the report/ratio of the signal-to-noise 93dB and the dynamic range 88dB. With this type of piece you can make your clean iPOD;) for more info go here http://electronics-diy.com/store.php?sel=kits
Wednesday, September 06, 2006
PCM2706 High Fidelity USB Soundcard / USB Headphones
This is a high fidelity external USB Soundcard / USB Headphones project that can be built for your PC or Mac. It is based on the latest PCM2706 IC which functions as a high quality, crystal clear 16-BIT Stereo DAC. It is a single chip digital-to-analog converter that offers two D/A output stereo channels, digital S/PDIF output and requires very few external components. PCM2706 includes integrated USB 1.0 & USB 2.0 compliant interface controller and it is conveniently powered directly from USB connection. PCM2706 is a USB plug-and-play device and does not require any driver installation under Windows XP and Mac OSX. Link
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