jws at jwsss.com
Sat Oct 31 16:25:32 CDT 2015
On 10/31/2015 1:11 PM, Charles Anthony wrote:
> The front panel I want to build is for my DPS8-M (aka Honeywell 6180)
> (Now it's a pretty big panel, so I'm thinking 1/4 scale.)
I have one of those courtesy of Nick Adams. The system took 8 of these,
Charles. Mine are missing the scrolls switches on the panel I have.
These were from a Multics system which resided in Atlanta.
> I'm mostly interested in the lights; having functional switches would be
> nice, but not critical.
> (My background: good grasp of basic digital electronics; did some wirewrap
> boards back in the early eighties. Poor soldering skills, no workshop. Mad
> software skillz.)
> I would like to build it reasonably cheaply.
> So I would start with a simple SBC; Beaglebone or the like, that can
> function as a USB device. I can write the S/W to push a bunch of bits down
> to it.
> What I don't know how to do is drive 500 or so LEDs.
> I am guessing a bunch of shift registers, but I've pretty much reached my
> design limits. I need some guidance on locating and understanding the
> technology to run that many LEDs.
> -- Charles
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