Re: EMC minimill option/Parallel port issues

In a message dated 03-March-00 07:28:26 Central Standard Time,
Ian@... writes:

<< I haven't heard of one of these, but I use a home-built board which is
simply a handful of LEDs hooked up to a ULN2003 driver chip which plugs into
the parallel port and gives a clear indication of what is happening there.
For switch inputs, you can simply wire a 4k7 resistor from the pin to a 5v
supply line and then pull it low with a switch to ground. I would think that
this is a better way than relying on a program running in the same computer
as any faults in the computer are likely to get mimiced or ignored as when
EMC is running. >>

Right on, Ian! I have done the same thing, myself, for same reason!