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Parameter Category
Item
Specification Details
Basic Information
Product Model
A025
Basic Information
Product Name
16-bit Capacitive Touch Piano Keyboard Extended Version (A025)
Basic Information
Product Weight
17.5g
Basic Parameters
PCB Dimension
100.00mm × 50.50mm
Basic Parameters
Touch Key Quantity
16 keys (KEY1~KEY16) with standard piano key layout
Basic Parameters
Communication Interface
I2C bus (SCL/SDA), compatible with Arduino, STM32 and other MCUs
Basic Parameters
Supply Voltage
3.3V~5V DC
Basic Parameters
On-board Functions
Power indicator (PWR), configurable I2C address, anti-mis-touch algorithm
Pin Definition (Socket)
VCC
Power positive pole, input 3.3V~5V
Pin Definition (Socket)
GND
Power negative pole, must share common ground with the main control MCU
Pin Definition (Socket)
SCL
I2C clock signal line
Pin Definition (Socket)
SDA
I2C data signal line
Key Features
Sensing Method
Capacitive touch sensing, no mechanical contacts, zero wear, light-touch triggering
Key Features
Key Layout
16 keys cover two octaves, including white and black keys, directly mapped to standard musical notes
Key Features
Communication Advantage
I2C occupies only 2 IO ports, saves MCU pins and supports multi-module cascading
Key Features
Power Consumption
Low-power circuit design with low quiescent current, suitable for battery-powered portable devices
Key Features
Mounting Structure
Reserved fixing holes at four corners for direct panel installation
Packaging Solution
Optional Packaging
① Anti-static bag soft package ② White cardboard hanging hole box ③ Kraft paper box
