In 2024, the Indian government launched the “PM-Wani” public Wi-Fi program, aiming to deploy 10 million hotspots nationwide to promote digital inclusion. However, as the 3,000 free Wi-Fi zones in the pilot city of Bangalore went live, it was revealed that they had not set a password, leading to unprotected network data! Security experts found … Read more
1. Technical Definition and Positioning SparkLink is a new generation of short-range wireless communication technology led by China, promoted by the International SparkLink Alliance. It aims to address the bottlenecks of traditional Bluetooth and Wi-Fi in areas such as latency, power consumption, and connection scale. Its core positioning is to become the “connectivity foundation” of … Read more
Today, we continue with recommendations for second-hand smartphones featuring the Snapdragon 778G processor. This time, it’s the OPPO K9s, equipped with Snapdragon 778G, a 120Hz LCD screen, and a 5000mAh battery, all for a second-hand price of around 300-400 Yuan. What do you think? The Snapdragon 778G is indeed a powerful chip, and its performance … Read more
1. Test Objective To evaluate the service life of the hub bearing unit under different driving conditions of the vehicle. 2. Test Setup Use appropriate special fixtures and(or) original automotive components to clamp the hub bearing unit, as shown in Figure2. The installation positions of the vibration sensor and temperature sensor are determined based on … Read more
The SPI interface (Serial Peripheral Interface) is a synchronous serial communication protocol widely used for high-speed data exchange between devices over short distances. Its core features and technical details are as follows: Communication Modes Uses a master-slave architecture, supporting communication between a single master and one or more slave devices, with the master device managing … Read more
Author | Hu Tu Zhen Produced by | Automotive Electronics and Software #01Introduction to the Serial Peripheral Interface (SPI) Protocol SPI is a multi-master or master-slave, four-wire, full-duplex synchronous serial communication protocol, which means that data can be sent and received simultaneously.SPI was developed by Motorola as a protocol for synchronous serial communication, allowing full-duplex … Read more
1. What is SPI 1.1 Introduction to SPI SPI, which stands for Service Provider Interface, is a service discovery mechanism. It automatically loads the classes defined in files located in the META-INF/services directory on the ClassPath. This mechanism enables extensibility for many frameworks, such as Dubbo and JDBC. Let’s start with a simple example to … Read more
Hello everyone, I am Goat. Continuing with some other signal quality issues related to I2C. If you encounter these problems, how can you resolve them? Back Reflection Back reflection poses significant risks to clock-type signals, and since the I2C CLK signal is a clock-type signal, the presence of back reflection can lead to sampling errors. … Read more
Hello everyone, I am Xiao Chen! Today, let’s talk about a particularly useful skill in smart home projects—how to drive an OLED display using a microcontroller via the I2C protocol.Whether it’s a homemade temperature and humidity monitor, a smart door lock, or a household gas detector, a clear display interface can greatly enhance user experience. … Read more
To start with the conclusion: Simply put, the interrupt mechanism of the HX2000 is more flexible but complex, suitable for high-precision applications such as industrial motor control, whileCortex-M focuses more on ease of use and automated processing, making it suitable for general embedded control.First, let’s discuss the similarities: Firstly, the interrupt vector table mechanism: Both … Read more