I made a board using the stm32f407 chip, and the network solution uses the lan8720A chip. However, I encountered a strange problem: After connecting the board to the power system, turn on the power sw...
Author: Helon CHEN, ST engineer
Click to download the pdf document:Q: How to calculate the response time from shutdown state to ready state
A: To calculate the transition time from SHUTDOWN to READY, ...
The microcontroller has its own LCD driver function, and the external resistor drives the LCD screen. What is the role of the external resistor and capacitor? How do they cooperate with the LCD screen...
When I was learning about the CC2530 chip used in Zigbee, I planned to get familiar with Zigbee programming through a few basic experimental examples. However, it was still very difficult for me who h...
The course has been designed for a week, and I have encountered many problems with the program and schematic diagram. The following three have not been solved yet. Please give me some advice and save ...
Please tell me how to calculate this verification code? I don't understand
For example, I sent the header code 0XF1, the middle three data 0X0D 0X1A 0X01 and the tail code 0XF3
So what is the check co...
1. Start, hold and stop circuits
Four ladder diagrams for starting, holding and stopping Y10 are shown in the figure. These ladder diagrams can all realize the functions of starting, holding a...[Details]
According to the China Trade Relief Information Network, on October 14, 2021, the U.S. International Trade Commission (ITC) issued an announcement that it had made a 337 partial final ruling on certa...[Details]
According to Reuters, the Dutch government plans to announce new regulations on June 30, local time, to impose licensing requirements on ASML's sub-top product line deep ultraviolet DUV lithography m...[Details]
As high-tech technology is gradually integrated into traditional agricultural and sideline industries, greenhouse cultivation has become a way to produce off-season crops. This paper introduces t...[Details]
GPIO is the abbreviation of general purpose input and output. In other words, it is a pin that can be controlled by the MCU. The MCU connects to external devices through GPIO pins to achieve ex...[Details]
Nepal is a friendly neighbor of China connected by mountains and rivers. The Nepalese people under the snow-capped peaks long for light, just like the longing for spring in the cold winter. Nepal P...[Details]
On the morning of March 6, the ribbon-cutting ceremony for the commissioning of Zhongkai New Energy's "Chiwan Energy Storage Demonstration Project" was held in Chiwan, Shenzhen. This event mark...[Details]
According to news on October 7, the European Union announced a countervailing investigation into Chinese electric vehicles last month. The relevant news "sparked a thousand waves with one stone" and ...[Details]
1. Introduction of the concept of counting Let's start with counting votes: draw a "positive". This is counting. Counting routines can be seen everywhere in life. For example: the counter on the tape...[Details]
The vehicle operating system (Automotive Operating System , AOS for short) is a program system that manages and controls vehicle hardware and software resources. It is the most basic system software...[Details]
PT2262/2272 wireless remote control decoder simulation program 315-433M is for everyone to learn! ! ! The simulation schematic diagram is as follows . The MCU source program is as follows: //Decry...[Details]
introduction Green environmental protection and energy saving are the global trend, and embedded computer systems are widely used in portable and highly mobile products. Low power consumption design ...[Details]
As the first model of Honor after independence, which has attracted much attention in the industry recently, Honor V40 is gradually shedding its mysterious veil. Combined with the information ex...[Details]
Aiming at the wired and mechanical control mode of traditional lighting, this paper proposes an intelligent lighting control system based on the Internet of Things (IOT) technology. It embeds the int...[Details]
According to a report by TrendForce's TrendForce Research Institute, electric vehicles have become the main growth driver for the automotive industry in the future, and it is estimated that the numbe...[Details]