Infrared remote control alarm (schematic + PCB diagram + program + documentation).rar

The infrared controlled temperature alarm produced for this competition took half a month to make. It is a simple device made of AT89S52 with LCD 12864 as the display platform, including infrared remote control, temperature measurement, time display, alarm reminder and picture browsing. Infrared controlled temperature sensor.

Schematic PCB

HealthyPi Move: Open source, smart health watch that is as good as professional ones

Supports continuous or intermittent monitoring of important biometric signals such as ECG, heart rate, HRV, PPG, SpO₂, blood pressure trend and respiration. It integrates daily use and advanced research applications.

Schematic PCB

Design of forehead thermometer based on STM8S handheld non-contact infrared thermometer gun MLX90614 (schematic diagram, PCB, source program)

Based on the STM8S handheld non-contact infrared thermometer gun MLX90614 forehead temperature gun design, including schematic diagram, PCB, source program, etc.

Schematic PCB

Tetris design based on STM32 (source program, schematic diagram, PCB)

Tetris design based on STM32, including source program, schematic diagram, and PCB files

Schematic PCB

Single-button keyboard based on ESP32-S3 with color screen

Schematic PCB

Sony's super powerful IoT kit based on its own CXD5602 (open source information)

The biggest highlight of this kit is Sony's own 6-core microcontroller CXD5602, which comes with 1.5MB of general-purpose SRAM, 64KB of backup SRAM, and a main frequency of 156MHz. There is also an M0+ core assist processor for IO control management, which comes with 256KB of general-purpose SRAM. The built-in GNSS receiver supports GPS and GLONASS. Others include 2D graphics acceleration (supporting rotation, scaling, mixing, etc.); dedicated sensor acquisition peripherals (with its own 40KB FIFO and supporting preprocessing) supporting SPI, I2C and other interface methods; DCMI camera interface and I2S audio peripherals All pretty good too.

Schematic PCB

Open source power meter: with power supply function, dedicated to IoT power consumption measurement

The biggest feature of testing the power consumption of IoT devices is the high dynamic range, a few uA in the sleep state and hundreds of mA in the transmitting state, and it supports dynamic switching of the measurement range. The open source power meter ZS1100A has a dynamic measurement range of 1uA to 1.5A, a resolution of 100nA, and an accuracy of 1% ± 200 nA, which is very good.

Schematic PCB

Building construction monitoring and security system

Whether during construction or in use, civil construction projects require real-time health monitoring of the building structure, such as inclination changes, wall subsidence displacement, support pressure, concrete solidification temperature...

Traditional monitoring methods generally use on-site Wiring, manual scheduled patrols, and on-site reading with handheld instruments, the use of IoT technology is seriously insufficient. Therefore, this project will use LoRa networking and IoT technology to implement wireless and automated building monitoring applications.

Schematic PCB

Snake game design based on STM32 (program, PCB)

Snake game design based on STM32, including program and PCB files

Schematic PCB

Remote home appliance controller based on Raspberry Pi and web interface

A project that uses a web page to remotely control the Raspberry Pi to send out infrared signals to control home appliances such as air conditioners. To put it simply, you can use your mobile phone to control it through the web page on the way home, turn on the air conditioner in advance, and set it to the required temperature. At the same time, the indoor temperature and humidity can be monitored in real time on the web page. The entire project is written based on Python's flask framework.

Schematic PCB

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.

Schematic PCB

Intelligent desktop weather forecast system based on STM32

With voice recognition function, you can use voice to search for weather, as well as radio, temperature and humidity, calendar and other functions.

Schematic PCB

Four+rotor+MAV four-wing aircraft

Contains the design principles of four-wing aircraft

Schematic PCB

Electronic clock module schematic + PCB diagram (2012 version)

Electronic clock module schematic diagram + PCB diagram (2012 version), if you are interested, you can download it and take a look.

Schematic PCB

Graduation project based on 51 microcontroller electronic code lock design (schematic diagram, source program, thesis, etc.)

The system consists of STC89C52 microcontroller, 4*4 matrix keyboard, buzzer, reset circuit and crystal oscillator circuit, relay, etc. The 4*4 keyboard is mainly used for password input and modification, buzzer alarm, reset circuit and crystal oscillator circuit with STC89C52 The single-chip microcomputer constitutes the smallest system of single-chip microcomputer. It has functions such as setting and modifying 6-digit user passwords, alarming for incorrect input, and alarming for incorrect passwords. This system is low in cost and practical in function.

Schematic PCB

20MHz handheld dual trace pocket oscilloscope based on TMS320F28033

With TMS320F28033 as the core, it is composed of signal amplification circuit, signal acquisition circuit, data storage and processing module, system control and display module and other parts.

Schematic PCB

Dual channel signal generator, manual welding

High reference value, the 50-year-old work of FatFS author ChaN

Schematic PCB

the-little-bili-tv: Bilibili little TV based on ESP32

This Bilibili small TV uses esp32 as the main control, lvgl GUI interface design, and is developed based on idf4.0 to support smartconfig or WeChat airkiss distribution. Its functions include: network connection display, network acquisition time, weather display, temperature and humidity collection, Fan count display, mqtt temperature and humidity upload, etc. All software and hardware are open source.

Schematic PCB

An open source multimeter suitable for DIY

This project started with STM32F1 and now it uses STM32F3.

Schematic PCB

Design of bus passenger counting system based on infrared technology

    The system uses TI's MSP430F149 microcontroller as the core controller. This microcontroller has a 16-bit CPU integrated register and constant generator, which can maximize the code efficiency of the microcontroller. It integrates JTAG and supports online programming; two universal full-duplex Serial synchronous/asynchronous communication interface; PWM control output; external interrupt input interface. The microcontroller is responsible for sampling the bus door opening and closing signals, turning on or off the infrared counting module, recording the number of people getting on and off at each bus stop, storing the data on the number of people getting on and off at each bus stop, and transmitting the stored data to the computer.

Schematic PCB