51 microcontroller ultrasonic ranging program

The ultrasonic ranging system based on a single-chip microcomputer measures the output pulse width, that is, the time interval between transmitting and receiving ultrasonic waves. It controls the peripheral circuits in a timely manner through the single-chip microcomputer and provides signals such as frequency oscillation, data processing, and decoding display to the peripheral circuits. The ultrasonic transmitting circuit includes a gate control circuit (RS flip-flop) and a differential/shaping circuit, while the receiving circuit consists of receiving, amplifying, signal filtering, and shaping circuits.

Schematic PCB

Diansai source code three-phase electronic multi-function energy meter

It is mainly composed of the basic functions and structure of the professional electric energy measurement chip ATT7022B and the single-chip computer MSP430F149 system. In terms of hardware circuits, the electromagnetic compatibility of the circuit is fully considered in the circuit design. A more reliable power supply for electric energy meters is designed to improve the ability to withstand lightning strikes. And it is proposed to use EPROM to store data in order to achieve the purpose of simplicity and security. In the particularly critical communication unit of the electronic energy meter, multiple communication methods such as serial communication and wireless communication are designed to connect scattered electricity meters into a network to achieve centralized control and remote meter reading functions. In addition, a GPS module is designed to locate the coordinates of the collection point.

Schematic PCB

Esai source code pure electric vehicle motor drive and vehicle control system based on DSP and bidirectional Z-source inverter

This project applies the bidirectional Z-source inverter to the motor drive system of pure electric vehicles. Using TMS320F2808 DSP as the control core, the SVPWM control technology based on the Z-source inverter is implemented.

Schematic PCB

Protues simulation example (8051)-stepper motor control

Protues simulation example (8051)-stepper motor control.rar

Schematic PCB

Protues simulation example (8051)-stepper motor C version.rar

Protues simulation example (8051)-stepper motor C version

Schematic PCB

Protues simulation example (8051)-stepper motor.rar

Protues simulation example (8051)-stepper motor

Schematic PCB

Protues simulation example (8051) - playing music

Protues simulation example (8051) - playing music

Schematic PCB

Protues simulation example (8051)-PWM control DC motor

Protues simulation example (8051)-PWM control DC motor

Schematic PCB

Protues simulation example (8051)-PWM control motor method.rar

Protues simulation example (8051)-PWM control motor method.rar

Schematic PCB

Protues simulation example (8051)-PWM control LED brightness simulation program.rar

Protues simulation example (8051)-PWM control LED brightness simulation program.rar

Schematic PCB

Protues simulation example (8051)-PWM temperature adjustment.rar

Protues simulation example (8051)-PWM temperature adjustment.rar

Schematic PCB

Protues simulation example (8051)-PWM motor forward and reverse rotation

Protues simulation example (8051)-PWM motor forward and reverse rotation

Schematic PCB

Protues simulation example (8051)-PWM test

Protues simulation example (8051)-PWM test

Schematic PCB

Protues simulation example (8051)-PWM wave output (adjustable)

Protues simulation example (8051)-PWM wave output (adjustable)

Schematic PCB

Protues simulation example (8051)-H type motor drive

Protues simulation example (8051)-H type motor drive

Schematic PCB

Proteus simulation example (8051)-stepper motor control

Proteus simulation example (8051)-stepper motor control.

Schematic PCB

Motor speed measurement (use Hall + magnet or infrared reflection tube + black and white code disk to do this experiment)

Motor speed measurement (use Hall + magnet or infrared reflection tube + black and white code disk to do this experiment)

Schematic PCB

Obstacle measuring car

A car with intelligent judgment function is designed and produced. The car has the following functions: automatic obstacle avoidance function; tracking function (driving according to the black track on the road); phototaxis function (finding the point light source in front and driving in place); It has the function of detecting the number of iron pieces placed on the road surface; it calculates and displays the distance traveled and the walking time, and can make sounds and light up. The work can be used as a high-end smart toy, or as a powerful application example for college students to learn embedded control.

Schematic PCB

Stepper motor module (design plan + programming)

Stepper motor module (design plan + programming)

Schematic PCB

UAV code and documentation based on STM32

The structural characteristic of a quadcopter is that it is equipped with a rotor on each of its four corners, which are driven by motors. The blades can rotate forward or reverse. In order to maintain the stable flight of the aircraft, the quadcopter is equipped with 3-directional gyroscopes and 3-axis acceleration sensors to form an inertial navigation module. It also uses an electronic controller to ensure its fast flight.

Schematic PCB