Anonymous small four-axis code

Anonymous small four-axis code

Schematic PCB

[Hengtuo Technology] Hawk 2 open source flight control data package V1.0

HT-Hawk is an open source flight control system suitable for multi-rotor aircraft. It supports four- and six-rotor aircraft. It is an open source autopilot system developed for multi-rotor aircraft enthusiasts. It can achieve attitude stabilization and provide users with excellent performance. Flight experience.

Schematic PCB

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

Broadband amplifier based on 51 microcontroller

This design uses the variable gain wideband amplifier VCA810 to increase the gain and expand the AGC control range, and uses software compensation to reduce the step interval of the gain adjustment and improve the accuracy. The input part uses a high-speed voltage feedback op amp 0 P A842 as a follower to increase the input impedance, and a protection circuit is added to the input part without affecting performance. Various anti-interference measures are used to reduce noise and suppress high-frequency self-excitation. The power output part is made of discrete components. The passband of the entire system is 4.4 k Hz ~ 8.4 MH z, with a minimum gain of 0 dB and a maximum gain of 70 dB. The gain step is ld B/6dB/arbitrarily set. The error between the preset gain and the actual gain below 60 dB is less than 0.2 dB. The effective value of the undistorted output voltage reaches 10.1 V, and the AGC control range is 52 dB when outputting 4.5 ~ 5.5 V.

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

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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

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

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

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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