Elecrow
Mini Piano Module with I2C Interface for Micro: bit
Do you want to make your Micro: bit to be an instrument? Maybe we can make your dream come true with this piano module. There is interface for you to plug in...
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Do you want to make your Micro: bit to be an instrument? Maybe we can make your dream come true with this piano module. There is interface for you to plug into your Micro: bit, four RGB LEDs make your board colorful. This piano module has capacitive touch chip that leads to 13 touch keys to simulate your piano keys, you can play your favorite music.
Making your Micro: bit an instrument with this piano module without hesitation.
Features
- 4 RGB LEDs, controlled by only one signal pin.
- Extending the SPI, GPIO interfaces of Micro: bit that makes easier to use.
- There is buzzer on the board.
Specifications
- Touch chip: TTP229
- RGB LED: WS2812B
- LED color: 16777216 colors
- Dimension: 85mm x 56mm
- Working voltage: 3.3v
Interfaces
- VCC: power (3.3v input)
- GND: GND
- P0: control pin of buzzer (related to the P0 pin of micro: bit)
- P1: control pin of LED (related to the P1 pin of micro: bit)
- SCL: touch keys control pin, I2C clock
- SDA: touch keys control pin, I2C data
Package list
- Mini Piano Module with I2C Interface for Micro: bit x 1
Wiki & External links
Jargon buster
Plain-language definitions for the technical terms used above.
- GND
- GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.
- GPIO
- General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- RGB
- Short for red, green and blue, the three primary colours of light that are mixed in varying amounts to make a wide range of colours. In electronics RGB can refer to an LED or pixel that blends these three colours, or to a colour signal or interface that carries separate red, green and blue channels.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
- VCC
- VCC is the positive power-supply connection on a chip or module. Connecting it to the correct supply voltage is needed for the part to power on and helps avoid damaging the electronics.
- WS2812B
- A smart RGB LED chip with a tiny built-in controller, commonly used in addressable light strips and panels. It matters because many WS2812B LEDs can be chained together and controlled from one microcontroller pin, but they need compatible code and careful power planning as the number of LEDs grows.
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