Bit-Tree Creativity - Ultrasonic Piano Project Course Package

Ultrasonic Piano Project Course Package

This 2-in-1 ultrasonic piano supports playing full-range high, medium and low notes via physical keys. It also enables contactless performance by detecting hand distance with ultrasonic sensors. The course covers knowledge of sound frequency. Learners can program to generate varied square-wave musical tones. This project features easy assembly and simple programming.

Dual-mode music playing: keypad operation & contactless ultrasonic performance

Programmable square wave modulation to generate diverse sound effects

User-friendly assembly and programming operations for beginners

BIT-TREE CREATIVITY

STEAM skills like programming will be a core competency for the next generation, and the time to cultivate this ability is now.

Primary Category	Secondary Item	Detailed Specification
1. Basic Product Information	Full Name	Ultrasonic Key Piano
	Manufacturer	BIT-TREE CREATIVITY (Supplier of Programming Kits & Integrated Courses)
	Overall Dimensions	125mm×78mm×126mm
	Housing Material	Modular assembly with acrylic panels
	Product Positioning	Beginner STEAM music programming teaching kit, kids programming & music theory training set. Compatible with unified main control and programming ecosystem of all brand products.
	Power Supply	DC5V/1A, Type-C standard interface. Compatible with power banks, USB adapters and PC USB ports.
2. Hardware & Electrical Parameters	Main Control Chip	LGT328P Processor, 32MHz. Hardware compatible with Arduino UNO core.
	Core Sensor Module	HC-SR04 ultrasonic ranging module. Realizes contactless performance via distance detection; different distance intervals correspond to distinct musical notes.
	Key Configuration	Physical key matrix covering full high, medium and low scales; no semitone keys. (Upgraded Triangle Piano adds semitone keys.)
	Sound Output Module	Built-in active speaker / buzzer module. Main controller outputs square waves of different frequencies to drive sound generation with customizable tones.
	Hardware Interface	Type-C shared port for data & power supply. Reserved IO expansion pins for external LED indicators and timbre switch buttons.
	Structural Features	Modular assembly with snap-fit acrylic housing. No glue required, easy to assemble and disassemble.
3. Functional Parameters	Dual Play Modes (2-in-1 Core Feature)	1. Physical Key Mode: Press physical keys to trigger corresponding notes and play full-scale melodies. 2. Contactless Ultrasonic Mode: Move hand at different distances in front of the sensor; ultrasonic ranging recognizes positions and triggers different musical notes contactlessly.
	Programmable Expansion Functions	Modify square-wave output frequency via programming to customize note pitch and tempo; program to switch multiple instrument timbres and set automatic melody playback.
	Music Theory Functions	Covers basic full scales for simple nursery rhymes and entry-level piano pieces. Supports popular science learning of sound frequency.
4. Programming Development Parameters	Supported Programming Languages	Graphical block programming, C language, C++ programming
	Compatible Software	Arduino IDE, Mixly Block Programming (Universal development environment for all brand kits)
	Programming Knowledge Points	1. Acoustics: Correspondence principle of sound frequency & pitch, square wave sound generation principle. 2. Hardware Programming: Ultrasonic distance data acquisition, IO key scanning, PWM square wave audio output. 3. Program Logic: Branch judgment, distance threshold determination, array storage of note frequencies.
	Assembly & Programming Difficulty	Simple hardware assembly with minimal wiring. Introductory programs feature easy logic, accessible for beginners with zero foundation.
5. Course Support & Application	Supporting Teaching Materials	Official assembly manual, hardware wiring diagram, basic playing source code, contactless playing source code and teaching lesson plans.
	Competency Training Objectives	Basic music theory, ultrasonic sensing principles, circuit wiring practice, audio programming creation, logical algorithm design.
	Applicable Scenarios	Kids introductory programming courses, music-integrated maker classes, after-school clubs, science fair exhibits and DIY projects.

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