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TOKN KB16 ENCODERS

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monkeybomb:


--- Quote from: KevSteele on June 02, 2005, 11:09:20 am --- I'd still like to know what sort of arrangements they made with him with regards to getting the MAME trademark back...

Kevin

--- End quote ---

I would too.  I suspect that the deal involves ultracade being aloud to use MAME.  The way the license is worded I think ultracade could use MAME.  No one knows if he has been all along anyway.


As for the KB32 I missed the part where the cost was given.  I can't imagine paying 30 dollars for an encoder without screw termminals.  Is it more than 30?

I also think that the keywiz no solder eco is a way better choice, but I can see a place for the KB16.  I thought they were cheaper when I saw the e-bay prices and bid $15 three or four times, but the market showed they were worth 17.  I thought it would be fun to MAME my desk at home with one joystick and three buttons.  When I thought it was cheaper it seemed like the choice.

paigeoliver:

6183328291 -Tokn KB16 - MAME arcade keyboard encoder w/ PS2 cable

Auction is gone though.

Tiger-Heli:


--- Quote from: monkeybomb on June 02, 2005, 11:25:30 am ---As for the KB32 I missed the part where the cost was given.  I can't imagine paying 30 dollars for an encoder without screw termminals.  Is it more than 30?

--- End quote ---
Only available as an E-bay auction, not on the TOKN.net site.  The TOKN KB32 is currently (17May05) readily available on E-bay for around $10.50 (but most auctions seem to close around $30-$35 or more), but I am not sure how long this price will be available.

--- Quote ---I also think that the keywiz no solder eco is a way better choice, but I can see a place for the KB16.  I thought they were cheaper when I saw the e-bay prices and bid $15 three or four times, but the market showed they were worth 17.  I thought it would be fun to MAME my desk at home with one joystick and three buttons.  When I thought it was cheaper it seemed like the choice.

--- End quote ---
Agreed - if you look at half the number of inputs of the KeyWiz for half the price - it changes the picture immensely, but that requires getting lucky on just the right E-bay auction and MattP has said that the E-bay offerings were a limited introductory deal, so I have been limiting discussion to the officially posted prices.

ddockery:

He can email eBay and claim to do things on the behalf of the MAME team w/o their consent you know.  Hell, ANY of us can do that.  I've done it myself when I see the CDRs full of MAME rom sets.

RandyT:


--- Quote from: mattp on June 01, 2005, 10:40:06 pm ---The TOKN KB16 is not implemented in what would be called a traditional keyboard matrix.
There is no row and column scan or search and there are also no ghosting issues. No diodes are needed nor used.
Rather it is a two ground multiplex with high speed interleaved byte latching on a single microcontroller port.

--- End quote ---

Sounds impressive.  But you just described a traditional keyboard matrix.

I don't have one of your products, but based on the descriptions you and others have given, it sounds like the 8 inputs are doubled (read: connected to a total of 16 pins on your header) and then you have 2 "ground" lines (which aren't always ground.)

If you are alternating high and low on those two "ground" lines (columns) and checking for a specific result at one of the other eight (rows), then you are indeed using a traditional keyboard-style matrix.  And if this is so, and you are not employing firmware methods that block certain keypresses, or using diodes to prevent backfeeed, then it would seem pretty likely that there would be potential ghosting problems.

There are only so many ways to skin that cat, are you saying you've come up with a new one?

RandyT





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