I have a question for you all, what protocol does the POS receipt printer use?
I recently worked on a project in which I used STM32F407 to receive printer data captured by a USB packet capture module ...
TL494 controls the generation of PWM waves to control the switching of the power tube, but the phases of pins 8 and 11 are not the same when outputting (pin 13 is connected to a low level), pin 8 has ...
I have a question for you guys. Microcontrollers like C8051F500 have both AGND and DGND pins. Looking at the schematic diagram of the development board, you can see that the analog ground and the digi...
The one-month [Summer Benefits to Celebrate the Dragon Boat Festival] event, in which a large amount of technical information is waiting for you to claim, and there are also gifts to help you, has end...
Scan the QR code above or click here to make an appointmentMeet your new favorite mobile deviceIt may be small, but it matters. Weighing only 1.8 kg and measuring just 4 cm thick, this small yet power...
On March 8, the day before the opening of Shanghai AWE, Haier released a smart home consisting of a complete set of fully interconnected smart home appliances, involving 161 smart life scenarios in ...[Details]
A PCB factory in Foshan closed down, and the industry reshuffle accelerated under the epidemic Recently, industry sources said that a circuit board factory in Foshan sent a notice to the company's su...[Details]
AC asynchronous motors and permanent magnet synchronous motors are two common types of motors in modern industrial applications. They have certain differences in structure and working principles. A...[Details]
The Zhundong-Southern Anhui ±1100 kV UHV DC transmission line project (hereinafter referred to as the "Zhundong-Southern Anhui Project") is the world's "four most" UHV transmission project with the...[Details]
Anyone who has parked a car under the blazing sun knows that it is easy for sunlight to enter the car through the glass windows, but it is difficult to dissipate the heat. According to foreign media ...[Details]
YL-C medical device flow tester Testing of medical devices not only tests for tightness, but also considers occlusion and fluid restriction. Especially for blood-related medical devices, where such p...[Details]
Application fields of acoustic emission technology
At present, people have widely applied acoustic emission technology in many fields, mainly including the following aspects: (1) Petrochem...[Details]
According to foreign media reports, Vayyar, the global leader in 4D imaging radar, has launched the automotive industry's first in-cabin safety "combination" solution. Powered by a single sensor, the...[Details]
In order to save energy and electricity, LED has been widely promoted, but LED needs a power supply, the quality of which will directly affect the life of the LED, so how to make a good LED driver po...[Details]
Metal material element analyzer is a commonly used analytical instrument that can better meet the needs of metallurgy, machinery, chemical industry and other industries for multi-element analysis of m...[Details]
Power management technology has changed dramatically over the past decade. The wave of portable and personalized electronic products has changed the landscape of the consumer electronics market, re...[Details]
This paper introduces a temperature control circuit with simple artificial intelligence. When using this circuit for temperature control, you only need to turn the switch to position 2, set the con...[Details]
Can vortex flowmeters measure liquids? Can vortex flowmeters measure gases? How is the performance of vortex flowmeters in measuring steam? The vortex flowmeter must ensure at least 15 times the pipe ...[Details]
LED lamp beads are voltage-sensitive devices and capacitive loads. In actual work, the current accuracy is required to be high, which is one of the main issues affecting the luminous efficiency and...[Details]
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