Introduction With the continuous advancement of the information revolution in the 21st century, the popularity of smartphones has increased significantly. Humans have begun to consider how to control objects using smartphones or computers, which has also promoted the rapid development of the Internet of Things (IoT) in recent years. This article takes the ESP8266EX Wi-Fi … Read more
As a newcomer to the field of wireless modules, there are certainly some unclear aspects regarding the role and application scenarios of WiFi modules. In this article, I will explain the role and application scenarios of serial WiFi modules. WiFi Module 1. Definition: The serial WiFi module is a widely used wireless communication module that … Read more
By utilizing wireless connectivity, designers can transform non-smart products into smart integrated devices for the Internet of Things (IoT), enabling data transmission to the cloud for artificial intelligence (AI)-based analysis, while allowing devices to receive over-the-air (OTA) commands, firmware updates, and security enhancements. However, adding a wireless link to a product is not a simple … Read more
Basic Features (1) ISM and SRD frequency bands of 2400-2483.5 MHz (2) Maximum operating rate of 500 kbps, supporting 2-FSK, GFSK, and MSK modulation methods (3) High sensitivity (-101 dBm at 10 Kbps 1%) (4) Built-in hardware CRC error detection and point-to-multipoint communication address control (5) Low current consumption (13.3 mA in RX) (6) Programmable … Read more
With the popularization of broadband, the development of computer technology, and the improvement of image processing technology, video surveillance is increasingly penetrating various fields such as education, government, entertainment, and healthcare. Moreover, the situation where video surveillance technology is only used in enterprise industries is gradually being broken, and public households have become a new … Read more
“Analyzing the working principles of digital-to-analog converters and analog-to-digital converters—from resistor ladder networks to Delta-Sigma modulation techniques.” Microcontrollers are “consuming” the entire world. Nowadays, even the most basic tasks like blinking an LED are cheaper and simpler with microcontrollers than building oscillating circuits with discrete components or relying on the once ubiquitous 555 timer chip. … Read more
Ground Noise Isolation and Reduction Solutions for High-Precision ADC Circuit PCBsHigh-precision analog-to-digital converters (ADCs) are widely used in industrial measurement, medical devices, and high-precision instruments. However, in actual circuit design, the performance of ADCs is often affected by PCB layout and ground noise, leading to signal distortion, reduced resolution, and even data errors. Therefore, reasonable … Read more
Buses, buses, they always get you tangled up. In this world, signals may be the same, but there are thousands of buses, which can be quite a headache. In general, there are three types of buses: internal buses, system buses, and external buses. Internal buses are used for interconnections between peripheral chips and processors within … Read more
Friends involved in hardware design should be familiar with the SPI interface and the GPIO ports of MCUs, and many have personally designed SPI interfaces. When designing, did you consider this important parameter? — The driving capability of the SPI interface and ordinary GPIO ports. Today, let’s discuss how to evaluate the driving capability of … Read more
ISSN: 2959-913X (Print) ISSN: 2959-9148 (Online) New Article A study on a tactile display drive system using SPI communication and a piezoelectric driver IC Junyun Zheng1, Yuya Otahara1 and Junji Sone2,* 1 Graduate School of Engineering, Tokyo Polytechnic University, Atsugi, Kanagawa, Japan 2 Faculty of Engineering, Tokyo Polytechnic University, Atsugi, Kanagawa, Japan Citation: Zheng J, … Read more