Mobile power supply (adjustment OK program + schematic PCB diagram)

Mobile power supply (adjustment OK program + schematic PCB diagram).

Schematic PCB

Light cube production source code + schematic diagram

Light cube production source code + schematic diagram.

Schematic PCB

Electronic scale solution, schematic diagram and program based on AT89C51

Electronic scale solution, schematic diagram and program based on AT89C51

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

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

Mouse circuit diagram, PCB and source code based on CY7C63723/CY7C63722 chip

Mouse circuit diagram, PCB and source code based on CY7C63723/CY7C63722 chip

Schematic PCB

Realizing LED reading of remote control key values ​​based on microcontroller (program and circuit diagram)

Microcontroller realizes the program of LED reading remote control key value

Schematic PCB

Snake based on microcontroller (schematic PCB source program simulation file)

The microcontroller production contains schematic pcb diagram source program simulation files

Schematic PCB

Intelligent LED desk lamp design based on microcontroller_with circuit diagram, finished product demonstration diagram, and source program

This article introduces the framework structure and component modules of the design as well as the principles of each module. It also introduces the hardware design of each part, the software design of each part, and the software flow chart. The design is an intelligent LED desk lamp integrating multiple functions with STC89C52 microcontroller as the control core. The desk lamp realizes the function of automatically detecting whether there is someone in the room and automatically turning on/off; the desk lamp brightness has an adjustment function; it has a time display function; it has a temperature display function; and it has an alarm function. The hardware design is divided into eight parts, including the microcontroller control module, button module, desk lamp module, temperature module, clock module, alarm module, display module, and infrared sensing module. The microcontroller control uses STC89C52, the display module uses LCD1602C liquid crystal to display temperature, time, date, etc., the button module is used to adjust time, date, LED brightness, etc., the clock uses DS12C887 clock chip, and the desk lamp module uses 16 LEDs and uses a buzzer. The device emits an alarm sound, the temperature sensor uses a DS18B20 chip, and the human detection device uses a BIS0001 infrared thermal sensor. The software design is written in microcontroller C language and realizes all control functions.

Schematic PCB

Computer USB-based massager (including schematic diagram and source program download)

Including schematic diagram and source program download, the microcontroller is PIC12F629.

Schematic PCB

Single-chip wireless dual-display answering machine based on AT89S51 (with papers, circuit diagrams, and C language programs)

This design is a system built using AT98C51 microcontroller. The wireless answering terminal uses a combination of PT2262 transmit encoding chip + F05P transmit module (including thesis description, circuit diagram, and C program are complete)

Schematic PCB

51 Make a perpetual calendar (schematic diagram, program)

51 Make a perpetual calendar (schematic diagram, program)

Schematic PCB

Design of dual-tone doorbell circuit based on 555 timer

Design of dual-tone doorbell circuit based on 555 timer

Schematic PCB

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.

Schematic PCB

Four-channel radio remote control schematic diagram

Four-channel radio remote control schematic diagram

Schematic PCB

Design and production based on lithium battery charger_with schematic diagram and PCB

Since my four-wheel drive robot is powered by a 16.5V lithium battery, and there is no charger for this battery on the market, I am very confused about charging it. In desperation, we designed a portable and simple lithium battery charger. Solve the trouble of charging. The charger can output an adjustable charging current of 100mA-1A. The input voltage is VIN>18V, and it can be charged with the 19V voltage on the laptop. Charging time is generally determined according to the size of the charging output current.

Schematic PCB

DER-903 - 72 W charger using InnoSwitch3-CP with PowiGaN technology, 93% efficiency

72 W isolated flyback power supply for chargers and adapters using PowiGaN-based InnoSwitch3-CP (INN3279CH215)

Schematic PCB

DER-717 - InnoSwitch3-CE based 15 W adapter with ±30 kV ESD capability

15 W isolated flyback power supply using InnoSwitch3-CE (INN3164C-H101) with ±30 kV ESD Capability

Schematic PCB

PCA9450-EVK: PCA9450 Evaluation Kit

Schematic PCB

OM17057: Demonstration board for BGU6104 low noise amplifier, ISM and LTE bands