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Dave's Electronics
Kremmit:
--- Quote from: SavannahLion link=topic=69203.msg707053#msg707053
[quote author=u_rebelscum link=topic=69203.msg706589#msg706589 date=1185231508 ---and GGG doesn't have an analog interface.
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I thought their Opti-Wiz was the equivalent to the AKI and A-Pac. ???
[/quote]
Nope. Opti-Wiz competes with Opti-Pac and Mini-Pac. GGG doesn't have a competitor for the AKI or A-Pac.
SavannahLion:
Thanks for the information. Would've saved me some head scratching.
u_rebelscum:
--- Quote from: SavannahLion on July 24, 2007, 06:22:07 pm ---
--- Quote from: u_rebelscum on July 23, 2007, 06:58:28 pm ---Personally, I like his product better than the original A-Pac that was out at the time, since no extra capacitors are needed, even though it has less buttons and no 8-way feature. The newer analog-only apac v.2 looks like it doesn't need capacitors, either, but it doesn't have buttons,
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I saw it mentioned elsewhere as well. What are the caps for in the circuit?
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The old way PCs read analog sticks hooked to the gameport was based on how long it took a cap to discharge, one per axis. Each cap was charged through a POT; the lower the POT resistance, the more charged the cap, and the longer it told to discharge. Usually a 5k POT needs a different cap than a 100k POT; and the APac is like this. Not sure how AKI or APac v.2 do it, as they look solid state.
And FWIW, there are a lot of other analog interface products out there at the same level as AKI & APac, mostly for the flight sim & race sim crowds. Many can do 5k and 100k POTs. A few to look at BetaInnovations, FlightLink, and Precision to name a few.
And a little more back to the original subject, found a pretty good read on encoders vs POTs.