You're right, there are two circuits for controlling the x and y axis. I didn't articulate that very well. I'll look at my missile command or football cards to see if I can trace them out. Right now I'm using a 3" trackball but it requires a lot of spin to move the players! Sent from my iPad
On Feb 18, 2015, at 9:30 PM, John Robertson <jrr@flippers.com> wrote:
On 02/18/2015 7:02 PM, Matthew Rossiter wrote: I bought a set for Atari Tank only to find out I already have it. :)
I notice Kurz Kasch never made a set of cards for Atari Basketball AFAIK so I made a pretty nice little rig using a variac to control the input voltage. I just need to make a simple 555 timer - duty cycle circuit like they have to mimic the trackball in other games so that I don't have to hunt down a 4.5 inch trackball. Anybody got a schematic I can use?
Matt Don't you need two pulsing signals for each axis? Rotation and direction? How can you do that with a single 555 timer? Seems to me you would need a dual timer with an offset depending on which direction you want to 'go'.
Or am I missing something?
The Atari CTS-1 used a dual opto spinner for this sort of thing.
John :-#)#
On 2/18/2015 4:16 PM, John Robertson wrote: Coinopwarehouse has about 75 cards up for sale. I bought a few, and they are in good condition. Lloyd said most didn't come with documents, but he does include what he has. He will combine ship too.
Worth looking at if you are rounding out your collection or want to trade with me sometime...
stores.ebay.com/coinopwarehouse?_dmd=1&_nkw=kurz
John :-#)#
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