Analysis of MQTT protocol in the source code of IoT firewall himqtthimqtt is the first high-performance MQTT IoT firewall with complete source code - MQTT Application FireWall , written in C language,...
Author: Texas Instruments Gautham Do you remember that many battery-powered electronic toys have a small plastic pull tab on the battery (see Figure 1) that you pull to make the toy start moving? This...
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1. Introduction As we all know, telecom power supplies are required to operate over a wide input voltage range (36V to 77V), with the best circuit performance at 48V input. However, this circuit d...[Details]
Most power meters use electric measuring mechanisms. The difference between the electric system power meter and the electric system ammeter and voltmeter: the fixed coil and the movable coil are not ...[Details]
On November 18, the IPO of Honeycomb Energy Technology Co., Ltd. (hereinafter referred to as Honeycomb Energy) on the Science and Technology Innovation Board was accepted by the Shanghai Stock Exchang...[Details]
The ZDS2022 oscilloscope has 11 basic triggers and 21 fully open protocol trigger functions. Today, let’s talk about delayed triggering in basic triggering. The delay mentioned here refers to the d...[Details]
On October 26, Longteng Optoelectronics released its third-quarter performance report, stating that from January to September 2020, the company achieved operating income of 2.983 billion yuan, a year...[Details]
Introduction to Modbus Protocol
The following only discusses the content of Modbus protocol related to this article.
1.1 Data transmission mode of Modbus protocol
Modbus protocol defines two...[Details]
In response to the U.S. Department of Commerce’s recent announcement that it will impose export controls on four technologies, including EDA software tools, a spokesperson said at today’s (August 18)...[Details]
Based on the study of wireless sensor networks (WSN) and ZigBee protocol, a design scheme of infrared intrusion detection system based on ZigBee technology is proposed. This scheme takes advantage of ...[Details]
On May 12, the national smart technology brand Xiaodu reached a cooperation with NIO . The two parties will optimize and upgrade the user experience of NIO's in-vehicle voice operating system. In the...[Details]
OFweek Cup · OFweek 2023 China
Robot
Industry Annual Selection (abbreviated as OFweek Robot Awards 2023) is jointly organized by OFweek, China's high-tech industry portal, and its authorita...[Details]
In the early morning of June 14th, Beijing time, at Tesla's annual shareholders meeting, CEO Elon Musk once again "made a bold statement", saying that the company's future market value may be more ...[Details]
Jiwei.com reported on June 16 that today, Honor held the Honor 50 series launch conference at the Shanghai Oriental Sports Center, officially launching three mobile phones including Honor 50 SE, Hono...[Details]
Linear regulated power supply
It is widely used in scientific research, power electronics, electroplating, radio and television transmission, communications and other fields. It is an in...[Details]
Norflash and nandflash are non-volatile flash memories implemented using different technologies. Their respective characteristics will not be introduced here, but only the operation of norflash by s3...[Details]
On October 24, Bloomberg reported yesterday that Arm plans to cancel the license that allows its long-term partner Qualcomm to use Arm intellectual property to design chips.
Today, analy...[Details]
Security Electronics
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