How to configure random generation of parameters (Get request with parameters) when using jmeter tool for interface stress testing? This is my first time using this tool. I have searched a lot of info...
A few days ago, I saw a video on the Internet. There was an owner who was not at home most of the time. He went home for one day in a certain month. As a result, he received a reminder for electricity...
In many circuits, one power supply may correspond to multiple loads. Sometimes the power supply of the load needs to be switched, and sometimes the load needs to be current limited. The usual method i...
I'm adjusting the driver of enc28j60 recently. It was successfully driven on f103 board before. Now it is transplanted to f407. I changed the library of f407, spi interface function and pin definition...
Very happy to receive the board:Above:After taking a quick look at the data sheet, I found that there is not much difference with the same model of STM32:It seems that CAN and USB cannot be used at th...
Job Responsibilities:1. Responsible for component selection;2. Design hardware solutions and related hardware circuits, draw schematics and PCB designs according to product requirements;3. Debug circu...
First of all, we need to understand the basic knowledge of frequency converters and motors. Frequency converters are electronic transmission devices that are mainly used to control the speed and ou...[Details]
At present, the digital television (DTV) conditional access system (CAS) launched in China basically uses smart cards of "one machine, one card, machine-card pairing" for management at the receiving e...[Details]
1. Memory configuration:
Note 1: RAM stores data, ROM stores programs;
Note 2: The EA pin of the microcontroller controls the selection of internal or external memory.
EA = 1: Use the inte...[Details]
Let's get straight to the point. The following figure is a typical two-electrode voltage (voltage whose polarity changes alternately from positive to negative) shock diagram.
Va: Steady-...[Details]
Today, blogger @数码闲聊站 exposed the tempered glass film of Xiaomi 12. @Digital Chat Station revealed that Xiaomi 12 has a dual-curved, hole-punch screen. The camera on the front is centered and...[Details]
0 Introduction
With the widespread application of high-tech in the military field, weapons and equipment are gradually developing towards high, precise and advanced directions. Traditional mili...[Details]
Introduction With the development of modern industrial production, enterprises pay more and more attention to energy requirements. Energy regulation issues such as process control, production cost a...[Details]
Competition in the domestic wearable device market is also very fierce. Recently, IDC released the third quarter domestic wearable device market shipment data, with Xiaomi and Huawei leading the way....[Details]
1. Material selection 1. L289 drive motor x2 2.1.5V battery (you can buy rechargeable batteries, I have used dozens of batteries!!!) I use 8 1.5v batteries to form a 12v battery to power 4...[Details]
The key to hospital safety management is to ensure the safety of medical staff and prevent and reduce adverse events during the diagnosis and treatment of patients and medical staff. The IP access...[Details]
In office buildings, factory floors and cars, software is gradually replacing mechanical parts and fixed circuits. For example, after using smart locks to replace mechanical locks, users can contro...[Details]
Debugging is the key work to check whether the PLC control system can meet the control requirements. It is an objective and comprehensive evaluation of the system performance. Before the system is ...[Details]
Introduction
Siemens motors and drives are widely used in the field of industrial automation, and their performance and reliability have been widely recognized.
The role of en...[Details]
Test/Measurement
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