Graduation project based on 51 microcontroller 8-key electronic keyboard design (schematic diagram, source program, etc.)

AT89C52 microcontroller is used as the core control component to design an electronic keyboard. The microcontroller is used as the main control core, and it forms the core main control module together with the keyboard speaker and other modules. The main control module is equipped with 8 buttons and a reset button.

Schematic PCB

Graduation project based on 51 microcontroller vending machine design (schematic simulation source program, etc.)

This article designs a vending machine based on the 80C51 microcontroller produced by INTEL.

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Graduation project based on 51 microcontroller electronic code lock design (schematic diagram, source program, thesis, etc.)

The system consists of STC89C52 microcontroller, 4*4 matrix keyboard, buzzer, reset circuit and crystal oscillator circuit, relay, etc. The 4*4 keyboard is mainly used for password input and modification, buzzer alarm, reset circuit and crystal oscillator circuit with STC89C52 The single-chip microcomputer constitutes the smallest system of single-chip microcomputer. It has functions such as setting and modifying 6-digit user passwords, alarming for incorrect input, and alarming for incorrect passwords. This system is low in cost and practical in function.

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Graduation project based on 51 microcontroller electronic scale design materials (schematics, source programs, papers, etc.)

Contains all design information

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Graduation project based on the design of automatic flower watering system based on 51 microcontroller (including schematic diagram, source program, thesis, etc.)

Contains all design information

Schematic PCB

Design of forehead thermometer based on STM8S handheld non-contact infrared thermometer gun MLX90614 (schematic diagram, PCB, source program)

Based on the STM8S handheld non-contact infrared thermometer gun MLX90614 forehead temperature gun design, including schematic diagram, PCB, source program, etc.

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High-precision LED electronic clock design based on STM8 (all design materials)

Based on STM8S003K3 microcontroller, it has alarm and chime functions and automatic light sensing function.

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Digital oscilloscope design based on STM32 (schematic diagram, source program, etc.)

Digital oscilloscope design based on STM32, including schematic diagram and source program, etc.

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Design of smoke SMS alarm based on STM32 (program, PCB, schematic diagram)

Detect whether there is smoke and flammable gas in the environment. If the above gases are present, send an alarm text message to the mobile phone.

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Smart curtain simulation design based on stm32 (source program, Proteus simulation)

Smart curtain simulation design based on stm32, including source program and Proteus simulation files

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Smart sensor light based on Gizwits (source program, schematic diagram, PCB)

Realized functions: Use the mobile phone APP to adjust the light intensity according to the amount of people walking around and remotely control the lights.

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Snake game design based on STM32 (program, PCB)

Snake game design based on STM32, including program and PCB files

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Design of temperature acquisition and alarm system based on STM32 (source program, schematic PCB, etc.)

When the temperature is lower than the set threshold, the corresponding indicator light lights up and the corresponding relay is closed. The relay can drive the load (fan, refrigeration plate, heating tube, etc.). When the temperature is higher than the alarm value, the sound and light alarm will sound. The keys are setting keys, plus key and minus key. The alarm value and temperature control range can be set, the temperature measurement range is 0 to 99.9 degrees Celsius, and the accuracy is 0.1 degrees Celsius.

Schematic PCB

AC current measurement system based on STM32 (program, circuit information)

The overall structure of this design is roughly composed of a main control module, a current signal sampling module, a power module and a serial port output module. In this article, the main control chip uses a microcontroller model STM32F103RC, which makes the structure as small as possible while ensuring the current sampling accuracy. It is as simple as possible, avoids complex and changeable circuit layout, is more convenient for PCB board production, and is relatively low-cost. Among them, in the design of the sampling conditioning circuit, a current transformer is used to sample the current signal.

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Tetris design based on STM32 (source program, schematic diagram, PCB)

Tetris design based on STM32, including source program, schematic diagram, and PCB files

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Design based on STM32 imitation Mitsubishi PLC (program + circuit diagram)

Based on STM32 imitation Mitsubishi PLC design, including program and circuit diagram

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LD3320 speech recognition garbage classification design source program schematic diagram based on STM32

Start by saying the keyword "Trash"

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Intelligent classroom design based on 51 microcontroller (source program, schematic diagram, PCB, simulation, BOM, paper, etc.)

Use 51 microcontroller STC89C52, clock chip DS1302, liquid crystal screen LCD1602, photoresistor, and infrared tube to design a classroom intelligent lighting control system

Schematic PCB

Quadcopter control system based on STM32 microcontroller (schematic PCB, program source code)

The processor of the small four-axis machine uses the STM32F103 chip, and the sensor uses the MPU6050

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Smart car schematic diagram + PCB diagram (formerly the second prize in the national award)

Smart car schematic diagram + PCB diagram (formerly the second prize in the national award)

Schematic PCB