> I recently purchased a Qtronix Scorpius 98A/980A Series 107 key > keyboard. I can't resist taking peripherals apart. Inside this > one, there is a white plastic pad with traces in it that served > as the switches. The traces all ran to one end where there is > a connector that hooks to a tiny green circuit card. It's about > 1.5 by 2.5 inches and only has a big IC, two capacitors, three > LEDs and the connectors on it. It would probably be perfect > for all the people who are making key-gloves or key panels for > .mp3 players. It's also cheap; I only paid CAN$20 for it. The chip is most likely a microcontroller. The caps and crystal provide timing. I'm suprised there are not any current limiting resistors on the LEDs. The is essentially the circuit design for the Pic-Key. (http://mudlist.eorbit.net/~adam/pickey/index.html) --Adam -- Subcription/unsubscription/info requests: send e-mail with subject of "subscribe", "unsubscribe", or "info" toWear-Hard Mailing List Archive (searchable): http://wearables.blu.org
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