Re: Keypad for Raduino...?

Arv Evans
 

DuWayne

Might work fine but one of my objectives is to reduce parts count to just what is
necessary for the functionality I want.
That is what drove me to using just one ADC input for the keypad.

Arv
_._


On Sun, Jun 24, 2018 at 3:26 PM DuWayne Schmidlkofer <duwayne@...> wrote:
One of the easiest ways to do this might be to use a I2C expander
configured something like this board from Microchip
https://www.microchip.com/DevelopmentTools/ProductDetails/GPIODM-KPLCD
You could control the keyboard and display over I2C and free up the
existing display pins for other uses.


--
DuWayne  KV4QB



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