↑ Click the above“IoT Time and Space” to follow us This article is sourced from: Why Hardware Matters, if there is any infringement, please contact us for deletion; published by the “IoT Time and Space” WeChat public account (IoT-LPWAN), please indicate the source when reprinting. IoT Communication Protocols Communication protocols can be considered a language … Read more
IoT Communication Protocols: From MQTT to CoAP The Internet of Things (IoT) is a network composed of numerous devices that connect to each other via the internet, enabling seamless and automated communication. In the IoT ecosystem, various communication protocols play a crucial role in achieving efficient, reliable, and secure data exchange. Today, I will take … Read more
Recently at Exadel, we encountered an interesting challenge for IoT developers. As IoT applications gain so much momentum, there are more and more options on how to develop them. For device communication, two specialized competing protocols stand out: Message Queue Telemetry Transport (MQTT) and Constrained Application Protocol (CoAP). Both are designed to be lightweight and … Read more
MQTT and Remote Chart Updates Method Description Utilize the JS component of the Weilin touch screen with MQTT functionality to achieve remote updates of screen charts. JS Component The JS component refers to the JavaScript (JS) components used in the Weilin touch screen system. These components are designed to facilitate the display of dynamic content … Read more
What is Modbus Modbus is a serial communication protocol originally developed by Modicon (now Schneider Electric) in 1979 for communication between programmable logic controllers (PLCs). The Modbus protocol is designed to be simple, easy to deploy and maintain, and due to its openness and lack of copyright requirements, it is widely used in the industrial … Read more
From open-source data to open-source event streams, learn about the MQTT publish/subscribe (pubsub) wire protocol. — Sean Dague Useful original link Please visit the “original link” at the end for clickable in-text links, full-size original images, and related articles. Thanks Compiled from | https://opensource.com/article/18/6/mqtt | Author | Sean Dague | Translator | Andy Song (pinewall) … Read more
After studying the “Basic Knowledge” section of “Zero Basics Introduction to IoT” and the “MQTT Protocol” section, we are now going to apply the IoT knowledge we have learned to practical operations. This IoT weather clock project, as the first project in the “MQTT Application” section, uses the ESP8266 development board along with a TFT … Read more
Author Shifan Yu: Director of Frontend Development at EMQX, responsible for frontend development of EMQX, and also a developer and maintainer of MQTTX. Introduction With the rapid development of IoT technology, interaction between people and devices, as well as between devices, has become easier. However, achieving more natural, efficient, and intelligent interactions has become a … Read more
If the number of devices reaches one million, the database will have to handle two million authentication records, which will significantly affect the database’s performance. Is there a batch way to define ACL authentication? 1. ACL Authentication Rules Under normal business usage, the behavior of clients can be restricted using ACL. For example, Client A … Read more
Follow,Star Public Account Number, don’t miss out on exciting content Author: Engineer Huang Public Account: strongerHuang IoT (Internet of Things) devices need to connect to the internet, and there are many ways to connect, with various transmission protocols available. Why is MQTT the preferred transmission protocol for IoT? This article focuses on the MQTT transmission … Read more