Re: [CAD_CAM_EDM_DRO] Re: LPT1

I am interested in the comment that sufficient voltage is available from a
USB port. I was looking to purchase a new laptop the other day to drive my
CNC interface, and was surprised to find that this particular make (Acer)
did not have a parallel port as standard. The salesman tried to sell me a
USB to Parallel converter, but as I was unsure that such a device would put
out sufficient volts, I declined the sale.

Can you confirm that the voltage from one of these USB-parallel converters
will put out sufficient volts?

Keith



At 05:19 08/08/2005, you wrote:

>In a message dated 8/7/2005 7:31:48 P.M. Central Daylight Time,
>dave_mucha@... writes:
>
>You can get 5v from the PC if the PC has 5V, but if you have less, that may
>be a problem.<<
>On newer PC's, you can steal 5VDC from a USB port. If you don't have those,
>there is almost-surely an unused "disk-drive power-plug" inside (the white
>things with the red, yellow, and two black wires). The Red wire should be 5
>VDC. The blacks are Gnd. (-ve). The yeller is 12 VDC.
>
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