YwRobot Nano Multifunctional Electronic Piano Expansion Board Compatible with Arduino Nano

Product Description:

The YwRobot Mini Piano Expansion Board is an all-in-one learning and development platform designed for use with the Arduino Nano. It combines sound, input, visual feedback, and display functions in one compact module—ideal for music-themed electronics projects, STEM education, and prototyping.

This board allows you to build a basic 7-key digital piano with real-time OLED note display and sound output using the onboard passive buzzer. It includes fully labeled I/O interfaces, rotary encoder, battery holder, RGB LEDs, and more, making it both educational and fun.

Key Features:

• 7 Independent Piano Buttons

  • Mapped to digital pins D2–D8

  • Press for high level, release for low level

• 7 Full-Color RGB LEDs (SK6812)

  • Individually controlled, RGBW, D11 control

• Passive Buzzer with Volume Control

  • Controlled via D10, adjustable output

• OLED Display Interface

  • I2C connection (A4, A5), supports 128x64 displays

• Rotary Potentiometer

  • Adjustable input for controlling volume or other variables

• Power Supply Options

  • DC jack (6.5–9V DC input)

  • Battery holder for 3.3–5V (supports 1 lithium cell or 3 AA batteries)

• Expansion Ports

  • 3× I2C interfaces (A4, A5)

  • 4× Analog inputs (A0–A3)

  • TX (D1), RX (D0), D12, D13 pre-reserved

Specifications:

• Board Size: 130mm × 91mm (max width) / 54mm (min width)

• Weight: Approx. 45g (without Nano)

• Power Input: 6.5–9V (DC jack) or 3.3–5V (battery)

Applications:

• Arduino-based electronic piano projects

• STEM education and classroom demonstrations

• Hands-on Arduino learning for sound, input, and I2C/OLED integration

• Interactive exhibits and DIY electronic music instruments

• Beginners learning button input, I2C communication, and LED/buzzer control

Package Includes:

• 1× YwRobot Mini Piano Expansion Board (Nano not included)

• 4× M3 x 30mm Brass Standoffs

• 5× M3 Screws

Note: Arduino Nano, OLED display, and other modules shown in images are for demonstration only and not included.