rcj@killer.DALLAS.TX.US (Robert Johnson) (12/02/88)
I am in need of controlling a motor (actually a few motors) with an IBM
PC. Actually, any computer will do, but I am going to use an IBM as a test
bed. I was thinking of using the RS-232 serial port to drive a relay to
control the motor. What I need to know is: Can I control one relay for
each pin of the DB-25? Is there any way to access each pin and send voltage
out? At the same time(or will I have to do one for a bit, then the next, etc,
in a loop to simulate it)? How do I control the serial port this completely?
How much voltage is sent down each pin, and is it standard in every
computer? Also, would it be better to use the serial or paralell ports to
do this?
Thanks to any and all answer,
Robert C. Johnson
..!texsun!killer!rcj
rcj@killer.dallas.tx.usa
^don't trust me on this one...