All posts in the 'Computer projects' Category
Posted on 11 May 2008
Wolfy writes:Connecting a LCD display to the end of a printer-cable is a simple and effective way of providing additional functionality to your computer system. The printer-cable LCD can be mounted on your computer case or fitted inside a Jiffy-Box and displayed somewhere away from your case. I was very surprised at how quick, easy and cheap this little mod was to make. Even the fully functional software interface is simple to install and configure.[more]
Posted on 11 May 2008
This project was easy in concept, but it did take some work. Of course there’s a lot of soldering, but by far the trickiest part was interfacing the parallel port with Windows XP.It also works for other versions of Windows, and provides replacements for the old Outp and Inp functions.[more]
Posted on 07 May 2008
This device transforms your PC into a powerful controller that you can use to program and automate machines, circuits, or just about anything you can imagine. Its flexible 29 I/O ports that you can configure to work ( bit by bit or in groups) as inputs or outputs makes it adaptable to a wide array of applications .[more]
Posted on 17 Apr 2008
This is a Physical Hit Counter V2 designed by Bob carret. Bob writes:There is nothing more in this version except, I use MAX7219 and 7-segment common cathode LED display x 8 instead using mechanical counter like the early version. MAX7219 is a 8-Digit LED Display Drivers and serially interfaced.I use MAX7219 because I got two samples from MAXIM.To interface MAX7219 with PC serial port without MCU, we must convert RS232 voltage level to TTL level.[more]
Posted on 02 Apr 2008
This is a simple circuit to experiment with sending and receiving IR remote control signals with a PC. The intent of this circuit is to allow experimenting with a Linux PC running LIRC to send and receive remote control codes. The circuit attaches to serial port. LIRC reads the DCD line to receive the pulses of received IR, while DTR is pulsed by LIRC to transmit. The circuit also provides a 1Vp-p output to feed to a sound card. [more]
