i2c based keypad and GPIO module for input
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The TCA8418 is a tiny and simple i2c based keyscan and GPIO controller. It can implement small keypads or most of a full PC keyboard. The inputs can also be used for GPIO.
Any software related will be released under BSD or MIT license. SAAS or cloud based software will be AGPL.
I noticed last week while auditing designs that I messed up the power pin order. So it is now fixed in R0.5. Stencil will be the same, but I'll need to order new boards obviously.
We will try to show how to build a keypad using flex. It should be pretty interesting if we can do it.
This board is commonly used for keypad design, but it seems that few drivers are decent. We will likely need to make our own.
We have our stencil from oshstencils for this board.
We need to order samples for this board before we can make and test it.
Chris Hamilton
Sukasa
Christian Lo
Alastair Young
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