Re: Wico XY Pattern Generator - Schematic capture complete

On 11/13/2011 7:18 PM, Zitt Zitterkopf wrote:
> I decided to forgo the HC4040 conversion for now. Too much risk given
> my desire to get a working prototype on the first pass.
> Here’s the final prototype schematics.
>
> http://Pinball-Mods.com/blogs/wp-content/uploads/2011/11/XYPattern.pdf
>
> And the final Board files:
>
> http://Pinball-Mods.com/blogs/wp-content/uploads/2011/11/brdPatternXY.pdf
>
> The active components (switches, linear pot, adjustment pots, jumpers,
> and video connector) are all populated on the reverse side. This will
> allow me to put the board on standoffs and a acrylic top on the device
> to protect it from dust/flying multimeter/scope probes.
>
> While the board is likely smaller than the two in the original; the
> board is still 5.1x3.9” tall which yields a board costing over $50 at
> batchPCB. By far the largest parts on the board is the 2716s... oneday
> maybe I’ll figure out how to move the EPROMS into a single EEPROM
> device and surface mount it.
>

The real way to re-design this is to use a ST Micro Cortex-M3 ARM
processor, with built-in DACs, and a couple of op-amps. You could have
user downloadable patterns. Or heck, you could just throw in an emulator
and run games directly from the ARM's memory.

It'd be a fun project, but as usual, I don't have the time to write the
firmware.

-Zonn

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Received on Mon Nov 14 01:21:49 2011