Design of motor speed measurement system based on microcontroller (defense version) complete graduation thesis with pictures and source program

This design mainly uses AT89C51 as the control core, which is composed of Hall sensor, LED digital picture tube, HIN232CPE level conversion, and RS232. The measurement speed system of the microcontroller and the serial communication between the PC and the microcontroller are introduced in detail. Give full play to the performance of the microcontroller. The focus of this article is to measure the speed and display it on the 5-digit LED digital tube.

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Stepper motor control based on 51 microcontroller - design report (instruction manual) and source program

Stepper motor control based on 51 microcontroller

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Waveform generator including schematic diagram + circuit diagram + program

The microcontroller uses MCS-51 series 89C51 (one piece), 74LS244 and 74LS373 (one piece each), inverting driver ULN2803A (one piece), and operational amplifier LM324 (one piece)

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Digital voltmeter based on microcontroller (circuit diagram)

Digital voltmeter based on microcontroller (circuit diagram)

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Automatic round trip car report based on Launch_pad (program + schematic + PCB)

The MSP430 microcontroller is used as the detection and control core of the car; a photoelectric sensor is used to detect the black belt on the road, and the feedback signal is sent to the MSP430 microcontroller, so that the MPS430 microcontroller controls the car to drive at a predetermined speed in each area according to the predetermined working mode, and The MSP430 microcontroller can control driving in different directions depending on the working mode selected; the Hall element A44E is used to detect the driving speed of the car; the 1602LCD is used to display the driving time of the car in real time. After the car stops driving, the driving time, driving distance and each speed zone of the car are displayed in turn. Travel time. This design has a simple structure and is relatively easy to implement, but it is highly intelligent and humane, and reflects intelligence to a certain extent.

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Design and implementation of MP3 player based on STM32 (MDK complete source code provided)

A design example of implementing a simple MP3 Player using an STM32 processor. This comprehensive application example helps readers understand the applications of STM32, SPI interface, SD card, TIMER, interrupts, FAT file system, USB, etc.

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A complete access control system (schematic diagram + source program)

A complete access control system (schematic diagram + source program)

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Schematic diagram of foreign classic quadcopter

The best among foreign classic quadcopter schematic diagrams

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Design of traffic light control system based on microcontroller control

Traffic light control system principle design drawing

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Quadcopter main control board design schematic diagram and PCB

Quadcopter main control board design schematic diagram and PCB

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EdgeReady MCU-based solution for Alexa for IOT

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S32G reference design for automotive network processing 2

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S32R274 End-to-End Reference Design Kit

NXP Automotive Networks GoldBox

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i.MX 8M Nano UltraLite Applications Processor Evaluation Kit

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Single phase electricity meter

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Cellular IoT Discovery Kit based on STM32L4 and ST4SIM

The B-L462E-CELL1 Discovery kit is a turnkey development platform for cellular IoT devices.

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STM32 smart home control system

This article designs and introduces a smart home control system based on GPRS wireless network with stm32 microcontroller as the core. This system is based on GPRS communication and can monitor the temperature and humidity status of the home in real time through wireless communication technology, and can freely control the switch operation of the home appliances. At the same time, the light intensity collection circuit is integrated, which can automatically open and close the curtain function.

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Digital photo frame source code (AT76C120+CT956)

Digital photo frame source code (AT76C120+CT956)

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Source program based on 51 microcontroller multifunctional smart desk lamp (with clock, posture correction, display temperature and brightness)

Function description: 1. After power on, the LED light lights up, which means that the current light is in automatic control mode; 2. You can switch back and forth between automatic and manual modes through button K5; 3. In manual mode, buttons K2, K3, and K4 correspond to A light brightness; (unavailable when k1 is pressed) 4. In automatic mode, it must first detect someone before automatically controlling the brightness, otherwise the desk lamp will go out. You can block the light of the photoresistor, or use a flashlight to illuminate the photoresistor to simulate changes in lighting, so that you can see that the brightness of the desk lamp will change as the light intensity in the environment changes. The effect is that the weaker the light, the brighter the desk lamp. . If the human body sensor cannot detect anyone for 1 minute, the desk lamp will automatically turn off. (The photoresistor is behind the USB lamp); 5. Whether it is automatic mode or manual mode, the brightness is divided into 10 levels, and 0-9 is displayed on the LCD; 6. Set date and time: Press K1 (setting ) key, the cursor will flash at the displayed year position, indicating that the year can be adjusted at this time. If you need to adjust the year, press K3 (plus) and K4 (minus) to adjust the year. Then press the K2 (move) key, and the cursor will flash when the month position is displayed. The month can be adjusted in the same way. Press the K2 key again to set the day, hour, minute, and second respectively. 7. When approaching the ultrasonic wave, the buzzer will alarm.

Schematic PCB