CardKB is a unit can implement a full-featured QWERTY keyboard. Consider that you want make some cool stuff that require keyboard typing and interaction, but M5 core it self just have 3 buttons, here comes the flexible and powerful CardKB unit. It also can achieve button combination(Sym+Key, Shift+Key, Fn+Key) and output richer key value. This unit communicates with M5Core through GROVE A port(IIC interface). Address is 0x5F.
“You can turn CardKB into a pocket computer!Complete pocket computer for CardKB using ArduinoBaisc, CardKB, I2C OLED screen. Since BASIC uses ArduinoBasic ( https://github.com/robinhedwards/ArduinoBASIC ), it supports almost all normal functions such as float and string variables …