Home Assistant (HA) is a powerful home automation system, but its support for Bluetooth Low Energy (BLE) devices has always been somewhat lacking. BLE_Monitor is an excellent custom component created to address this issue. It can passively monitor a wide variety of BLE devices from different brands and types, greatly expanding HA’s capabilities and enhancing … Read more
In the past two years, there has been considerable debate among stakeholders in various IoT technologies regarding which technology holds more advantages. Are these technologies moving towards integration or continuing to compete? Will the future be one of coexistence or selective development? According to consulting firm IDC, the market size of IoT is expected to … Read more
The LoRaWAN CN470 standard adopts asymmetric frequencies, which is the result of comprehensive considerations of multiple factors. This design is significant for enhancing network performance and meeting practical application needs: 1. Effective Utilization of Spectrum Resources In the LoRaWAN CN470 frequency band, the uplink and downlink use different frequency ranges. There are 96 uplink channels, … Read more
The following are several common LoRaWAN NS vendors along with their features and a comparison of the number of devices supported for free. Loriot Features: A powerful LoRaWAN network server that supports high performance, high security, and scalability. It offers flexible licensing options, including perpetual licenses and annual subscription licenses. Number of Free Supported Devices: … Read more
In today’s rapidly developing Internet of Things (IoT) technology, smart homes, smart buildings, and smart offices have gradually become important scenarios in urban life and enterprise management. For these spatial environments, the widespread application of LoRaWAN technology in low-power wide-area networks provides reliable communication guarantees for various projects. However, in the face of complex indoor … Read more
Have you ever wondered how a website generates a password after you enter “2333！@#￥” when setting it? How are the widely used encryption algorithms generated? How do they protect online financial activities worldwide? How do hackers decipher passwords? In fact, all of these stem from a mathematical problem. (Image source: veer图库) The Birth of Network … Read more
CANopen serves as a “common language” among industrial devices, enabling seamless “communication” between devices from different manufacturers. The S7-200 SMART, equipped with a CANopen module, acts like a proficient “translator” of this language, effortlessly commanding and coordinating various intelligent devices. This technology simplifies complex automation systems, allowing what once required intricate wiring to be connected … Read more
Click the blue text Follow us 1. Definition and Background CANopen is a high-level protocol based on the CAN (Controller Area Network) bus, used for communication between devices in various fields such as industrial automation, vehicles, ships, and medical equipment. It is an application layer protocol built on top of the CAN physical layer and … Read more
How to Diagnose PROFIBUS Communication Failures? A Systematic Approach to Troubleshooting Fieldbus Connection Issues and Tool Usage! Hello everyone! Today I want to share a “nightmare” in the field of industrial automation—the methods for diagnosing PROFIBUS communication failures. In my over ten years of experience in industrial automation projects, PROFIBUS failures are one of the … Read more
Click the blue text to follow us Overview of the full text This study uses gadolinium borate, which has a simple chemical formula and is easy to synthesize, as the matrix, selecting Ce3+, Tb3+, and Eu3+ with different luminescent properties as the doped ions. The aim is to prepare rare earth-doped GdBO3 luminescent materials at … Read more