The Parino project.
This is a controlcard that connects to any type of LPT port on any type of computer. The software was
developed for the IBM PC, but a tinker can change it easily since the sources of both hard- and software are
The user gets 12 relay outputs (230 V/ 5 A), 5 bit-wise inputs (with opto couplers between PC and "real world") and a serial bus structure to which (for example) an I2C interface connects. For Linux there already is quite a bit. Go check out Bart's site.
I have the full drawings published in this site. First it might be better to download the CAD package to have access to them. Lately I have uploaded the bulk of this project to this site. With this you can start building your own Parino card within hours.
Start by downloading the ZIP file with the Parino system floppy disk. Now put a freshly formatted disk in your A: drive and enter:
C:\path\>pkunzip -d pariflop a:in order to build your Parino system-floppy disk. If this doesn't work for some silly reason, reboot your (always) Windows PC to 'Command prompt only' and repeat the action. That'll do the trick. The same goes for bad printing of circuits and schematics. If this happens, it is caused by Windows, filtering through the binary files and removing some odd tokens, thereby rendering the laserjet output files useless. If this happens: reboot to 'Command prompt only'. This is the major source of problems.
If done, commence reading in the 'Description', 'Connecting', 'Software', 'Manual' and 'Build one' pages. I advise to browse these files using the 'Navigator'.
Currently I am working on an I2C extension for the Parino card. It will give the system 128 bits of digital I/O, 32 channels of ADC and 8 DAC's on one card. The first two prototypes are ready. Now just finish the software... :o)
Mounting the Parinocard.
Above, you see how I mount my Parinocards. I first cut a piece of sheet wood (MDF or plywood), 6 - 9 mm thick,
and I glue some strips of wood (12 x 18 mm) around the perimeter of the MDF.
The wood is positioned such that it supports the Parino PCB.
This mounting scheme has the advantages that you cannot touch the potentially dangerous underside of the PCB anymore. Also, the PCB is protected against accidental short circuits and moisture spills. And it looks nicer too.
Make the wooden strips such that they lock up the populated PCB in both horizontal directions.
Below is another picture, this time in combination with an older I2C extension board.
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