bfrank@eng.morgan.edu
Will be available June 1, 96.
As a part of his capstone design project, Mr Franklin has developed a very simple and inexpensive technique for data acquisition.
Serial communications ISA cards are plentiful and inexpensive. His project involved removing an 8250 UART and replacing it with a small daughter board consisting of an ADC0804 analog to digital converter (8-bit). Analog leads are bought to the rear DB-2 5 (or DB-9) connector. The result is a very low cost self contained data acquisition system.
Start conversion is implemented in software (TurboC for DOS) by writing any character to the serial port. Data is fetched by reading the serial port.
The description, all software and typical applications will be available for nominally $4.00 to cover printing and postage. A kit, consisting of a piece of perf board, a 40 pin socket and an ADC0804 is being considered. The kit may optionally include a used but tested serial card (XT style), 30 awg wire and a wirewarp tool.