M5Stack Official CardKB Mini Keyboard Unit MEGA328P Grove I2C USB ISP Programmer

Description: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.Button Combination Description:Single button pressed, keyborad will output the first key value(letter button will output lower case form). E.g if “Q” was pressed, keyboard will output “q”(lower case).Sym+key, keyborad will output the second key value. E.g if “Sym” was single pressed, then “Q” was pressed, the keyboard will output “{“. If “Sym” was double clicked, then the keyboard will lock this function, all key pressed will output it’s second key value.Shift+key, if a letter button was pressed, it’ll output upper case form. E.g if “Shift” was single pr