TJ-56-312 single chip electronic scale diy kit

The single-chip microcomputer electronic scale DIY kit mainly uses the single-chip microcomputer STC90C52RC to control the core to realize the basic control function of the electronic scale. This electronic scale can realize basic weighing functions (weighing range is 0~3KG, weight error is not greater than ±0.005Kg), and has expanded clock and voice reporting functions. The clock module can also set an alarm clock function. The system also has an over-range alarm function when weighing. The whole system is simple in structure, easy to use, complete in function, high in precision, has certain development value, and is suitable for electronic enthusiasts.

Kit parameters:
Product name: single chip electronic scale diy kit
PCB board model: TJ-56-312
PCB board size: 81*42mm
Product size: 119*100*50mm
Weighing range: 0~3KG (weight error is not greater than ±0.005Kg)

Features:
The system has expanded the electronic calendar clock. The system can be divided into six parts: small system, data collection, human-computer interaction interface and system power supply, clock and voice reporting. The system part mainly includes STC90C52RC and the classic reset circuit; the data acquisition part consists of a weighing sensor, signal amplification and A/D conversion part. The signal amplification and A/D conversion part is mainly implemented by the dedicated high-precision 24-bit AD conversion chip HX711; The human-computer interaction interface is keyboard input and dot matrix LCD display, mainly using 4*4 matrix keyboard and 1602 LCD display, which can conveniently input data and intuitively display data; the clock module is mainly composed of clock chip DS1302 and clock circuit; voice The counting module can read the time and the weight, unit price, amount and other voice contents of the electronic scale system by voice. It is mainly implemented by SC1010B, which can realize the basic weighing function and expand the clock and voice reporting functions. The clock module can also Set the alarm function. The system also has an over-range alarm function when weighing.