Serial port input device

[David McFarlane]

By way of background, are these response devices that you have 
previously used with a serial port, and now they no longer work?  Or 
is this the first time you have tried to use these with a serial 
port?  If you have successfully used these before with a serial port 
then I would be very interested, because as a general rule getting 
input via serial port requires a lot more electronics than merely 
connecting a wire to the port, as you would know by looking up any 
common reference on serial ports.

-- David McFarlane, Professional Faultfinder


At 7/13/2010 02:46 PM Tuesday, you wrote:
>I have recently created several response devices that are basically
>wires connected to buttons that feed in to either a serial port or a
>parallel port (depending on which we need to use). I am using e-prime
>2.0 for this and setting up the parallel port was relatively easy and
>the buttons work just fine. However, when I try to use the buttons
>through a serial port the following happens: under the experiment tab
>and under devices I added a serial device and put in the correct
>parameters for the device, including the correct address (COM1). Now
>when I go to the object which I want the buttons responses to be
>recorded on and try to add the serial port as an input device, there
>is no option for a serial port. There are only options for a keyboard,
>mouse, and parallel port.
>
>Honestly, I am also unsure if, for some reason, the computer is unable
>to detect the device connected through the serial port. But, it works
>just fine for the parallel. I did not do the wiring for the serial
>port adapter but the buttons are connected to pin 1 or pin 2
>(depending on the button), with what looks like a ground connected to
>pin 5.
>
>Any ideas?

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