control solenoid valves with a PC?
Peter at brentano.demon.co.uk
Wed Sep 13 09:09:06 EST 1995
In article: <NEWTNews.811026393.27334.fmp at quasimodo.versailles.inra.fr> Marion-Poll Frederic
<marion at versailles.inra.fr> writes:
> dear netters,
> I am looking for a software/hardware solution to control up to 8 solid
> state relays with a PC via TTL pulses. These relays are intended to
> command the opening and closing of solenoid valves that let pass odors to
> stimulate olfactory organs of insects. We would like to achieve
> stimulations at a maximal rate of 10 KHz and over durations from 1 minute
> to less than one hour.
> We have prototyped a program to drive the parallel port of a PC but we
> lack time and competence to achieve a completely tested and reliable
> The optimum solution would be to have such a program running
> independently in a PC while the main processor is running data
> acquisition and display at rates of 10 kHz / 1 - 8 channels. For example
> using a PC card with a processor or a micro-controller on board that
> could load complex sequences and being able to start the program on will
> would be perfect! However for moderately complex sequences, I guess that
> a solution relying upon the on-board PC timer and trapping clock
> interrupts would do the job as well.
> Do you know any existing (and cheap) software/hardware combination that
> would meet these requirements?
> Many thanks in advance for any cue.
Dear Frederic. While I am not in a position to help you, I am an inveterately
curious neurophysiologist. Can you tell me a little about what you are doing?
It sounds exciting
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