☆ Hardware Design Components: STC89C52 Microcontroller + GSM SMS Module + DS18B20 Temperature Sensor + MQ2 Smoke Sensor + HC-SR501 Human Motion Sensor + ADC0832 Analog-to-Digital Converter Chip + LCD1602 Liquid Crystal Display + AT24C02 Storage Chip + Buzzer + LED Light + Button. 1. The STC89C52 microcontroller is used as the control core, updating … Read more
Word count 6061, reading time approximately 31 minutes Microcontrollers vs Microprocessors: A Comprehensive Understanding of Their Differences and Applications Microcontrollers and microprocessors are fundamental components in the fields of electronics and computing. They play a critical role in various devices, from smartphones to embedded systems in cars and home appliances. This article explores their differences … Read more
This system is designed based on the 51 microcontroller and features a comprehensive indoor air quality monitoring system that can monitor various air quality parameters in real-time, including temperature and humidity, CO2 concentration, formaldehyde concentration, methane concentration, and PM2.5 concentration, displaying the data through an LCD1602 screen. The system supports threshold settings and automatic control … Read more
Introduction With the continuous increase in the number of vehicles, automotive exhaust emissions have become a significant source of urban air pollution. The components of automotive exhaust are complex and variable, containing various harmful substances such as methane, carbon monoxide, nitrogen oxides, and PM2.5, which not only pollute the environment but also pose a threat … Read more
Design of a Multifunctional Electronic Scale Based on the 51 Microcontroller Editor Abstract: This paper details the design of a multifunctional electronic scale based on the 51 microcontroller. The electronic scale features basic weighing, tare, overload alarm, weight quality inspection, time display and adjustment, temperature detection and display, data storage, and serial communication. Through hardware … Read more
Some screenshots of electronic books 【Complete Set of Hardware Learning Materials Collection】
Rust Embedded Development with ESP32 Microcontroller Learn Rust embedded development with the ESP32 microcontroller, starting with printing “hello world”. Setting Up the Environment: Relevant link: https://docs.espressif.com/projects/rust/book/ Install <span>rust</span> https://www.rust-lang.org/zh-CN/tools/install Verify successful installation: cargo -V Install <span>espup</span> cargo install espup –locked <span>espup</span> Install related dependencies espup install Install <span>ldproxy</span> related configuration cargo install ldproxy Install <span>esp-generate</span> … Read more
MCS-51 refers to a series of microcontrollers produced by the American company INTEL. This series of microcontrollers includes several varieties, such as 8031, 8051, 8751, 8032, 8052, 8752, etc., among which the 8051 is the earliest and most typical product. When learning about microcontrollers, in addition to understanding the internal functions, memory allocation, and I/O … Read more
Introduction SD card reading and writing refers to the process of microcontrollers reading and writing to SD/TF cards. The SD card is a low-voltage flash memory product that has standard MMC/SPI operation modules. For the MMC operation mode, the reading and writing speed is fast, but it has more control signal lines and is more … Read more
The clock circuit is an oscillator that provides a rhythm for the microcontroller. The microcontroller must operate under this rhythm to perform various tasks. Therefore, the microcontroller will not function properly without a clock circuit. The clock circuit itself does not control anything; rather, it is the program that allows the microcontroller to perform corresponding … Read more