Jon,
You are making me feel old; just a fact of life. :-) IIRC I had the
first PPMC board set out the door. Once one got the connector tied down
that beastie was rock solid. The communication diagnostic was a life
saver. Easy way to confirm that the communication was working and it
would/could run for days without an error. Get the communication working
and you were off and running. Where else does one get a nominal 16 bit
controller?
Dave
On 4/23/19 8:10 PM, Jon Elson wrote:
On 04/23/2019 09:05 PM, Joe Hildreth wrote:
Jon,
I guess you just have to 'love' standards huh? heh. Not to give
away my age, but the last 'standard' I tried to decipher was NAPLPS.
Well, that was a well-defined standard that never seemed to go anywhere.
Now, overlook my ignorance here, please. What boards do you make?
Mesa boards?
No, I'm a competitor to Mesa, I make the Pico Systems boards. The
original one was PPMC (Parallel Port Motion Control) that had a
motherboard attached to the parport and then you could plug in DAC,
encoder counter and digital I/O boards in any combination. Then, I
added a stepper controller, and a variant of that, a PWM controller.
And, then a bunch of other stuff that is not directly interfaced to
LinuxCNC, such as brush and brushless motor drives, an interface
between my stepper controller and Gecko 320-series step-servos, a
resolver to quadrature converter, a couple of boards to convert Fanuc
and Panasonic encoders to standard quadrature, and a board that plugs
onto the Beagle Bone and holds 6 stepper drives, mostly for 3D printers.
I started making the PPMC in 2002, so this goes back quite a ways.
Jon
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