Re: EMC minimill option/Parallel port issues

----- Original Message -----
From: <daveland@...>

> Is there a utility people use in linux to scan the port bit input bit
values
> and display them or manually set the outputs for debug ( not while emc is
running)?
> I need one!!!

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.


Ian

--
Ian W. Wright
Sheffield UK