Refer to the ESP32 IDF case "mqtt/tcp" (..\esp-idf-v4.4\examples\protocols\mqtt\tcp) to introduce the MQTT Client function, so that the Kaluga board can connect to OneNET (I use the old version of MQT...
Wireless transmission has many advantages over wired transmission. Perhaps most importantly, it is more flexible. Wireless signals can be sent from one transmitter to many receivers without the need f...
[i=s] This post was last edited by dong2213dong on 2019-4-25 21:23 [/i] First of all, I would like to thank the forum and RT-Thread for organizing this reading activity. It has been a week since I rec...
Preface:
When driving the LCD screen, we need to use fonts, pictures and other data. For example, if we want to display Chinese characters, the process is as follows: Make a font library to generate a...
1. Zero drift phenomenon and its causesZero drift refers to the phenomenon that when the input signal of the amplifier circuit is zero, due to the influence of factors such as temperature change and u...
Cylindrical roller bearings are a commonly used motor accessory that can provide high load capacity and high-speed rotation characteristics. In the following cases, the motor needs to choose cylind...[Details]
Nondestructive testing on-site testing technology
The observation system used on site is a one-transmit-multiple-receive system, that is, a single-point transmission is made on one side, and a fan-sh...[Details]
Judging from the 2019 MWC Shanghai, 5G has dominated the limelight, and some people say that 5G will eventually completely replace Wi-Fi. But in fact, the Wi-Fi 6 market has made great progress this ...[Details]
Since Apple launched AirPods in 2016, the emerging category of split true wireless (TWS) headphones has triggered a new round of incremental market by bringing extreme convenience to consumers and gr...[Details]
Industrial computers usually use industrial-grade motherboards, industrial-grade processors, industrial-grade memory, industrial-grade displays, industrial-grade peripherals and other components, w...[Details]
1. Overview
Data acquisition is an important part of signal analysis and processing. In many industrial control and production status monitoring, data acquisition and analysis of various physical...[Details]
On September 9, Times Electric stated in an interaction with investors that the company's IGBT Phase II chip line (i.e., the automotive component supporting construction project) was completed and pu...[Details]
Shanghai, China, September 23, 2022 - Ocean Optics has just launched the new generation of miniature fiber optic spectrometer Ocean ST. With its ultra-small size and excellent performance, it has ach...[Details]
General process of system testing To ensure normal operation and reduce workload, when testing the system, hardware testing is usually performed first, followed by software testing. When testing ...[Details]
In the new fiscal year starting in April, a Toshiba subsidiary will step up capital spending to expand production capacity of power chips at its main production base to meet strong demand. Toshiba...[Details]
First: Information display electronic instruments, equipment, household appliances, etc., information display, digital display and various displays, as well as LED display screens (information disp...[Details]
Constant current source circuit composed of MIC29152 and dual op amp
The circuit shown in the figure is a constant current source circuit with an output current of 1.0 A, which is composed of MIC29...[Details]
Q1: The bandwidth of TDS3032B is 300MHz, and the sampling frequency is 2.5G/s, which is 8 times the bandwidth. Is there a fixed relationship between bandwidth and sampling frequency? We also have an o...[Details]
Introduction
Traditionally, devices connected to a network need to be connected via at least two types of cables. One is the Ethernet cable for transmitting data and the other is the power cable fo...[Details]
The power control of electric vehicles is mainly to output electricity from the battery to the motor. How to achieve the output at will? This requires the use of power inverter technology, that is,...[Details]