A serial cradle
This project is aimed at building a small circuit that fits into a standard USB Visor cradle and that adds RS-232 capabilities. Note that Handspring sells a ser...
Serial MIDI Interface
This page describes how to build this full-bandwidth single-port (one input and one output) MIDI interface. The interface is buffered (that is, if the PC gets b...
Computer fan speed tacho out circuit
You will find this identical circuit inside most 3 wire computer fans with speed monitoring output to the motherboard. Peel off the sticker from the fan hub in ...
Computer fan speed tacho out circuit
You will find this identical circuit inside most 3 wire computer fans with speed monitoring output to the motherboard. Peel off the sticker from the fan hub in ...
Controlling The Real World With Computers
The hardware is shown in the picture (might take a little while to load). Don`t be the least bit concerned if you don`t understand everything in the first few p...
Controlling The Real World With Computers
The hardware is shown in the picture (might take a little while to load). Don`t be the least bit concerned if you don`t understand everything in the first few p...
PC Relay Controller
This project shows you how to build a relay controller using the Basic Stamp I interfaced to the PC serial port. The Visual Basic 5 software developed for the ...
PC Relay Controller
This project shows you how to build a relay controller using the Basic Stamp I interfaced to the PC serial port. The Visual Basic 5 software developed for the ...
Interface between Ericsson 6xx/7xx phones and a PC
This interface is needed to connect the phone to a PC, because the PC`s serial port works with voltage levels between -12 and 12V (RS232 protocol) and the phone...
Interface between Ericsson 6xx/7xx phones and a PC
This interface is needed to connect the phone to a PC, because the PC`s serial port works with voltage levels between -12 and 12V (RS232 protocol) and the phone...
VGA Hardware Screen Blanker
This design was published in the June 1994 issue of Electronics Australia, and has proven extremely popular. The kit was sold by Jaycar Electronics, but has sin...
VGA Hardware Screen Blanker
This design was published in the June 1994 issue of Electronics Australia, and has proven extremely popular. The kit was sold by Jaycar Electronics, but has sin...
TV RGB signal output from a SVGA graphics card
The idea to produce a standard TV PAL signal using a SVGA graphics card was born a few years ago, where cheap graphics cards with TV output were still not avail...
TV RGB signal output from a SVGA graphics card
The idea to produce a standard TV PAL signal using a SVGA graphics card was born a few years ago, where cheap graphics cards with TV output were still not avail...
Connection of the TV set to vga/svga to a card
The difficulty of connection vga of a videocard to the TV set is, that Frequency of lower case development(display) of the TV set makes 15 KHz, and VGA card - f...
Connection of the TV set to vga/svga to a card
The difficulty of connection vga of a videocard to the TV set is, that Frequency of lower case development(display) of the TV set makes 15 KHz, and VGA card - f...
PIXpand (beta 0.1)
This is a beta release of the PIXpand project. The PIXpand which is a device that connects to a TI calculator and enable it to store and retreive data to and fr...
PIXpand (beta 0.1)
This is a beta release of the PIXpand project. The PIXpand which is a device that connects to a TI calculator and enable it to store and retreive data to and fr...
Controlling Devices Through a Computer`s Parallel Port
This is a very easy and fun to build project that will allow you to control up to eight external devices through your computer`s parallel port. You may for inst...
Parallel port controls arbitrary-waveform generator
You can use the parallel port of your PC and a few additional components to generate a powerful, easy-to-use arbitrary-waveform generator. By using a Visual Bas...