Single-chip microcomputer high-precision frequency meter design schematic diagram + pcb + source program

Single-chip microcomputer high-precision frequency meter design schematic + pcb + source code with detailed Chinese annotations

Schematic PCB

Digital ammeter production + schematic diagram + program

Digital ammeter production + schematic diagram + program

Schematic PCB

Complete schematic diagram of GPS navigator based on 2440

Complete schematic diagram of GPS car navigator based on S3C2440

Schematic PCB

MCU infrared remote control perpetual calendar, with PC and video demonstration, (all source code + PCB + schematic diagram) should be considered the most powerful in this forum - 51 MCU Forum

Microcontroller infrared remote control perpetual calendar

Schematic PCB

Unicycle controller schematic diagram based on STM32S103

Unicycle controller schematic diagram based on STM32S103

Schematic PCB

Adjustable boost circuit schematic design based on MC34063, successfully tested

Main features of MC34063 integrated circuit: Input voltage range: 2.5~40V Output voltage adjustable range: 1.25~40V Output current up to: 1.5A Operating frequency: up to 100kHz Low quiescent current short-circuit current limit can realize boost or step-down power supply converter

Schematic PCB

Design and production of infrared door entry control system based on microcontroller (including source program and schematic diagram)

The system is mainly divided into two parts: one is the infrared sensor part. The second is the microcontroller counting display control part.

Schematic PCB

nrf905 radio frequency transmission circuit diagram and C program source code (based on microcontroller)

nrf905 radio frequency transmission circuit diagram and C program source code (based on microcontroller)

Schematic PCB

The ARM-based embedded application-biometric system comes with SCH schematic diagram and source code, which can be directly used in the project.

The ARM-based embedded application-biometric system comes with SCH schematic diagram and source code, which can be directly used in the project.

Schematic PCB

A DC regulated power supply circuit diagram based on 89C51

A DC regulated power supply circuit diagram based on 89C51, a novel regulated power supply design solution

Schematic PCB

Electronic scale solution, schematic diagram and program based on AT89C51

Electronic scale solution, schematic diagram and program based on AT89C51

Schematic PCB

A clock circuit design source code based on 51 microcontroller, also includes circuit diagram, PCB and source program

A clock circuit design source code based on 51 microcontroller, also includes circuit diagram, PCB and source program

Schematic PCB

Based on AT89S51 digital electronic code lock

Digital electronic combination lock. Based on chip AT89S51. Choose LED to display the results. Contains circuit diagram

Schematic PCB

Based on 51 microcontroller adc0808 analog-to-digital conversion source code plus simulation

Based on 51 microcontroller adc0808 analog-to-digital conversion source code plus simulation

Schematic PCB

Smart charger design based on MAX1898 C program project file source code and circuit diagram

Smart charger design based on MAX1898 C program project file source code and circuit diagram

Schematic PCB

Temperature and humidity alarm system during tobacco leaf baking process based on microcontroller (including proteus schematic diagram and c source program)

Temperature and humidity alarm system during tobacco leaf baking process based on microcontroller (including proteus schematic diagram and c source program)

Schematic PCB

Ultrasonic ranging principle diagram, PCB and source code based on 51 microcontroller

Ultrasonic ranging principle diagram, PCB and source code based on 51 microcontroller

Schematic PCB

LED practical power supply based on rm6203,6222,6401 includes PC version, schematic diagram, information and component list

LED practical driving power supply based on rm6203, 6222, 6401 including PC version, schematic diagram, information and component list

Schematic PCB

Smart tank vehicle source code + PROTUES simulation + circuit diagram based on 51 microcontroller and GPS system

Smart tank vehicle source code + PROTUES simulation + circuit diagram based on 51 microcontroller and GPS system

Schematic PCB

[51 MCU] Hand-made swing LED clock - schematic diagram + program

This production is based on the principle of persistence of vision, allowing a row of 8 LEDs to reciprocate and present an eight-character display in the air, which can display numbers or English characters. After powering on, the "Welcome!" welcome character will be displayed first (see Figure 1), and then it will enter the clock display state. The display screen displays "hour", "minute" and "second" information at the same time, separated by ":" (see Figure 2).

Schematic PCB