Projects (2)

LCD unit driven by a computer parallel port

Very simple LCD unit with almost no external components, driven directly by a computer printer port.

LCD unit connected and working, currently showing MP3 song information on the LCD.
I/O module driven by a computer parallel port

Get 5 inputs and 8 outputs from a computer printer port using only a few transistors and resistors.

Front of the parallel I/O module, with switches and LEDs.

Images (13)