Hi,

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Does anyone know a way with visual basic to trigger a motor to start running through a serial, lpt1, NIC or usb port. Is there some type of a command that can be used to trigger an electrical device to start running???? Please any help will be greatly appricated.
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For a cheap and cheerful serial port solution you could connect the DTR line to a suitable relay and manipulate it using the MSCOMM control DTREnable property.

HTH,
Viv