M5Stack CardKB Mini Keyboard Programmable Unit V1.1

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Product Link

M5Stack CardKB Mini Keyboard Programmable Unit V1.1OpenELAB

Description

CardKB v1.1 is a card-size '50 key' QWERTY keyboard. Adpots ATMega8A as the MCU, communication port I2C, and one 'RGB-LED' indicator.

Features

• Full-function keyboard, multi-key combination

• GROVE interface, support UIFlow and Arduino

• Two Lego compatible holes

Applications

• Keyboard peripherals for M5Stack Core

Specifications

Resources	Parameter
MCU	ATMega8A
Number of keys	50
RGB LED	1 piece
Communication method	I2C
Net weight	17g
Gross weight	18g
Product Size	88*54*5mm
Package Size	136*92*5mm

Docs

• Single button pressed, keyboard will output the first key value (the letter button will output in a lower case form). E.g if "Q" was pressed, keyboard will output "q" (lower cased).

• Sym+key, keyboard will output the second key value. E.g if "Sym" was pressed and then "Q" was pressed, the keyboard will output "{". If "Sym" was double pressed, 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 pressed and then "Q" was pressed, the keyboard will output "Q". If "Shift" was double pressed, then the keyboard will lock this function, all letter key pressed will output it's upper case form.

• Fn+key(custom function key combination), keyboard will output the third key value. You can customize what function the key presses corresponds to.

PinMap

ATMega8A ISPDownload interface Pin foot definition

M5Core(GROVE A)	GPIO22	GPIO21	5V	GND
CardKB	SCL	SDA	5V	GND

Protocol

• Protocol type I2C

• I2C Address: 0x5F

Compatible