Create very small 3x4 12 digit keypad pcb
Budget: $30 – $250 USD
Keypad that can be accessed via i2c Sparkfun Qwiic connector (this will plug in to a .66" oled from spark fun)
Using these specific soft sounding keys from Adafruit:
https://www.adafruit.com/product/3983
Will be plugging this keypad into a esp32 processor ... currently using a Sparkfun.com Esp32 Thing Plus C board: https://www.sparkfun.com/products/18018
Summary: 3x4 small keypad that connects to a esp32 processor via qwiic connector which also plugs into a .66" oled at the top of the keypad (https://www.sparkfun.com/products/14532) via qwiic connector..
Current Arduino library to control this sparkfun keypad:
https://www.sparkfun.com/products/15290
should work with this new smaller keypad.
Using these specific soft sounding keys from Adafruit:
https://www.adafruit.com/product/3983
Will be plugging this keypad into a esp32 processor ... currently using a Sparkfun.com Esp32 Thing Plus C board: https://www.sparkfun.com/products/18018
Summary: 3x4 small keypad that connects to a esp32 processor via qwiic connector which also plugs into a .66" oled at the top of the keypad (https://www.sparkfun.com/products/14532) via qwiic connector..
Current Arduino library to control this sparkfun keypad:
https://www.sparkfun.com/products/15290
should work with this new smaller keypad.