Parallel port control with USB->Parallel converter
c d saunter
christopher.saunter at durham.ac.uk
Thu Feb 14 10:15:04 EST 2008
Soren,
I don't know about the USB parallel port converters but there are
variousways you can add USB connectivity yourself.
A simple way are the USB devices from FTDI
(http://www.ftdichip.com/FTProducts.htm)
Either the FT232R or the FT245R. These are both single chip solutions
that provide a USB interface on one side and an 8 bit bi-directional fifo
on other. The 232 is mapped as a serial port at the system level, whilst
the 245 is higher bandwidth and accessed through an API (use ctypes etc.)
Windows, Linux & Mac OS X are supported.
FTDI provide evaluation modules (tiny, USB powered) that you can be up and
running with in no time:
http://www.ftdichip.com/Products/EvaluationKits/FT245RModules.htm
Good luck!
regards
cds
Soren (soren.skou.nielsen at gmail.com) wrote:
: Hi,
: I want to control some motors using the parallel port.. however, my
: laptop does not have any parallel ports (very few do). What I do have
: is a USB->Parallel converter... I thought about using PyParallel, but
: the USB->Parallel converter doesn't actually map to the LPT port ..
: and PyParallel only looks for LPT ports?
: Has anyone tried doing this? What are my options for controlling
: parallel connections on a laptop with no parallel port?
: I also thought about controlling the USB natively.. but since I dont
: have any instructions on how to do this with my Velleman USB->Parallel
: port converter... i guess I would be totally blind.
: Any help would be appreciated!
: Soren
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