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Step 2Take apart the keypad and check how the switchs work.
Take out any screws in the back of the keyboard, and carefully pull apart the layers of the keyboard.
Here are the layers:
The outside buttons.
The rubber layer that push the buttons back up.
Top pressure switch layer (thin plastic with wires etched in like a circuit board.)
Plastic separation layer.
Bottom pressure switch layer.
Bottom of the keyboard.
If you trace the upper switches you can see the individual etching that connects each button to the keyboard chip. The goal is to connect as many of the tracings together on the top layer with one wire, and the same with the bottom. The bottom layers are all attached together anyway, so in theory you only have to get a good connection on one wire... but the more the merrier... you are going to be whacking it with a drum stick!
Here are the layers:
The outside buttons.
The rubber layer that push the buttons back up.
Top pressure switch layer (thin plastic with wires etched in like a circuit board.)
Plastic separation layer.
Bottom pressure switch layer.
Bottom of the keyboard.
If you trace the upper switches you can see the individual etching that connects each button to the keyboard chip. The goal is to connect as many of the tracings together on the top layer with one wire, and the same with the bottom. The bottom layers are all attached together anyway, so in theory you only have to get a good connection on one wire... but the more the merrier... you are going to be whacking it with a drum stick!
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