Bit-Tree Creativity - Electronic Scale Project Course Package

Electronic Scale Project Course Package

What is strain force? How to measure the mass of an object according to strain force and display the data on an LCD screen? This is far more than an ordinary electronic scale. With programming, it can be transformed into a handheld game console, quantitative detector and other devices. The project features easy assembly and straightforward program logic.

Strain sensor weighing with intuitive LCD readout

Support programmable modification for multi-scenario applications

Easy assembly with simple program logic

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 Description
1. Basic Product Information	Full Product Name	Electronic Scale Project Course Package (Strain Pressure Sensing Weighing Maker Programming Kit)
	Manufacturer	BIT-TREE CREATIVITY (Supplier of STEAM Teaching Equipment & Integrated Courses)
	Overall Dimensions	155mm×102mm×35mm
	Product Positioning	STEAM Physics + Interdisciplinary Programming Teaching Kit; suitable for primary & secondary maker classes, after-school clubs and physics experiment training. Unified main control system across the brand’s full product line.
	Power Supply Specification	DC5V power supply; compatible with USB data cable, 5V power adapter and power bank.
	Product Structure	Modular assembly structure made of acrylic and plastic brackets; split weighing pan + control box design. Standardized pre-cut components.
2. Hardware Configuration Parameters	Core Sensing Component	Resistive strain pressure sensor (load cell) + HX711 high-precision 24-bit ADC acquisition module. Weight is converted by resistance variation caused by strain deformation based on strain force measurement principle.
	Display Module	LCD screen, real-time visual display of weighing data and calibration parameters, supports multi-group data display.
	Reserved Expansion Interface	Reserved IO pins for external buzzer, buttons and LED indicators; expandable overload audible & visual alarm function.
	Main Controller Compatibility	Compatible with BIT.U1 (ATmega328P, Arduino architecture) and BIT.S3 (ESP32) official boards. Shares the programming hardware ecosystem with password lock, trash can, traffic light, steel piano and laser harp kits.
	Included Accessories	Standard weighing tray, DuPont wires, calibration reference weights, installation screw set.
3. Functional Parameters	Basic Weighing Function	Collect data via strain deformation. Object placed on weighing pan → sensor deformation → chip mass conversion → real-time weight display on LCD. Supports tare zeroing and weight calibration.
	Programmable Multi-function Expansion (Product Highlight)	1. Handheld Game Console: Modify program to implement mini games with pressure trigger buttons; 2. Quantitative Detector: Set target weight; trigger alarm for overweight / underweight; 3. Price Computing Scale: Input unit price to automatically calculate total price via programming.
	Calibration Function	Built-in calibration algorithm. Complete zero point and range calibration with standard weights to compensate sensor errors.
4. Assembly & Programming Parameters	Assembly Difficulty	Simple hardware assembly with modular connection and few wiring steps. Beginner students can complete assembly independently.
	Programming Difficulty	Concise program logic. Easy-to-understand introductory sample codes, progressive advanced projects.
	Development Environment	1. Graphical programming: Mixly block programming; 2. Code programming: Arduino IDE C language (universal development environment for all brand course packages).
	Programming & Academic Knowledge Points	1. Physics: Metal strain principle, Hooke’s Law, relationship between force and deformation; 2. Electronics: Wheatstone bridge, ADC analog-digital conversion principle, precision amplifier circuit; 3. Programming: ADC data reading, value conversion algorithm, screen character driving, conditional judgment, variable calibration, multi-function switching programming.
5. Supporting Courses & Training Objectives	Competency Training Focus	Mechanics popular science, precision sensor principles, circuit wiring debugging, data algorithm conversion, multi-function programming modification, engineering calibration thinking.
	Supporting Teaching Materials	Official assembly manual, hardware wiring diagram, three sets of sample source codes (basic weighing program, quantitative detector program, handheld mini-game program) and complete teaching lesson plans.
	Applicable Teaching Scenarios	Junior high school physics mechanics experiments, interdisciplinary programming courses, STEM DIY projects, science fair exhibits.

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