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Hacking a Casio calculator? — Parallax Forums

Hacking a Casio calculator?

Armored CarsArmored Cars Posts: 172
edited 2004-09-01 17:58 in General Discussion
Anyone here hacked a Casio or used any parts from one? ·I have an XF 74000G.· The keypad has about 50 keys but there are only about 20 wires leading out of the keypad.

Comments

  • NewzedNewzed Posts: 2,503
    edited 2004-08-30 23:18
    I think the Casio uses a keyboard matrix.·
    Exactly how many·buttons do you have?

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    Pluggable Serial Backpack

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    ·
  • Armored CarsArmored Cars Posts: 172
    edited 2004-08-31 18:22
    54
  • NewzedNewzed Posts: 2,503
    edited 2004-08-31 19:10
    Then I would think there would be 15 wires coming from the keypad.

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    Sid Weaver
    TWS/RWS RF Modules

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    ·
  • Armored CarsArmored Cars Posts: 172
    edited 2004-09-01 17:58
    Theres more than 15, I did manage to fry the calculator yesterday trying to read the signals from it, I got some readings on the first wire then I hit the second one and it died for good. I think it may be too much trouble I dont even know wich ones give power or anything.
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