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CardKB Mini Keyboard Programmable Unit V1.1 (MEGA8A)

Parts › User Input & Controls › Buttons & Keypads

U035-B · M5Stack

CardKB Mini Keyboard Programmable Unit V1.1 (MEGA8A) photo

Unit CardKB v1.1 is a card-sized QWERTY 50-key PCB matrix keyboard that uses ATMega8A as the encoding MCU, with an output interface of I2C. It has one onboard RGB-LED to indicate keyboard status. Features Full keyboard input with multiple key combinations. HY2.0-4P interface, supports UIFlow and Arduino. Includes 1 x Unit CardKB v1.1 1 x HY2.0-4P Grove connection cable (20cm) Applications Keyboard peripheral for M5Stack Core Specifications Specification Parameter MCU ATMega8A Number of Keys… (M5Stack U035-B)

Part numberU035-B
ManufacturerM5Stack
CategoryUser Input & Controls › Buttons & Keypads
Pins4

CardKB Mini Keyboard Programmable Unit V1.1 (MEGA8A) pinout

PinNameTypeDescription
1SCLinput
2SDAbidirectional
35Vpower
4GNDground

Schematic symbol and footprint

5V3SCL1SDA2GND4
Schematic symbol
1234
Footprint: Grove HY2.0 4-pin through-hole, 2.0 mm pitch — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.

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