Re: Ability to drive multiple IR transmitters independantly from PC

[nobody@xxxxxxxxxxxx (Dave Houston)]

Alexis <snoopy@xxxxxxxxxxxxxxxxxxxxx> wrote:

>Dave Houston wrote:

>> What are the details on the codes you need to send? Carrier frequency, code?
>> It may be possible to design something quite cheap to accomplish this. Can
>> you program in Basic?
>
>I have to admit to my ignorance on this unfortunately.  The projectors
>are NEC VT650 models, but unfortunately I'm unable to find any details
>of the IR specifications on the 'net.  Is there anything you can suggest
>without knowing this information?

The RS232 serial commands are listed in the user manual. I would forget
about IR.

You can get single port USB-serial adapters for $10 each. Run 4-wire modular
cable from the RS232 end of each adapter to each projector. Cost: $10 +
cable + connectors per projector. The only problem is getting 20 USB ports
to plug the adapters into. I have 4-port USB expanders on a couple of
machines but I haven't seen a 10-port or 20-port version.

http://www.byterunner.com/byterunner/product_name=Y-105/user-id=/password=/exchange=/exact_match=exact

http://davehouston.net
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