CardKB2 Keyboard Unit (ESP32-C61)
42-key portable keyboard unit with an onboard ESP32-C61HF4 supporting four interface modes: I2C, UART, BLE HID, and ESP-NOW. USB-C and HY2.0-4P connectors; RGB indicator included.
Pinout
- VCC
5V power supply via HY2.0-4P Grove connector
Type · PowerVoltage · 5 - GND
Ground via GROVE connector pin 3
Type · Ground - SDA
I2C data line via HY2.0-4P Grove connector
Type · I2C - SCL
I2C clock line via HY2.0-4P Grove connector
Type · I2C
| Pin | Type | Function | Voltage |
|---|---|---|---|
| VCC | Power | 5V power supply via HY2.0-4P Grove connector | 5 |
| GND | Ground | Ground via GROVE connector pin 3 | |
| SDA | I2C | I2C data line via HY2.0-4P Grove connector | |
| SCL | I2C | I2C clock line via HY2.0-4P Grove connector |
Pin details
4 connections- VCC
5V power supply via HY2.0-4P Grove connector
PowerVoltage · 5 - GND
Ground via GROVE connector pin 3
Ground - SDA
I2C data line via HY2.0-4P Grove connector
I2C - SCL
I2C clock line via HY2.0-4P Grove connector
I2C
Start wiring
I2C · Analog · USB · 3.3 – 5 V · Breakout
Confirm the data interface matches your host board.
Module pins: VCC, GND, SDA, SCL. Schematik maps them to your board in the app.
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