Has anyone ever read and written SD cards? Why is there still no file created on the SD card after I execute the following functions?f_open(ptFatFile," name.txt", FA_CREATE_NEW); f_write(ptFatFile, "a...
Rail-to-rail amplifiers produce output voltages very close to ground... but how close? We're talking about CMOS op amps. They're often used in low-voltage designs when you're trying to maximize the ou...
Recently I want to use JN5121 to drive Nokia 3510i and 6610 LCD. I downloaded ARM and AVR programs to drive these two LCDs from the Internet and tried to port them to JN5121, but failed. Is anyone wil...
My major in school was software engineering, and I learned both Java and .NET. Now that I have graduated, I want to do embedded development. Does anyone know how to quickly enter the embedded industry...
The portable formaldehyde concentration detector based on STM32 is required to realize the following functions: Design a reasonable circuit independently to collect information about indoor formaldehy...
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
General LED lighting has a current limiting resistor in the driving circuit, and the power consumed by the resistor has nothing to do with the LED light emission. In order to improve efficiency, a...[Details]
VP2188 is a color STN LCD module produced by Jingdian Pengyuan. This module is a dot matrix transmissive color STN display screen with a color scale of 65 k colors and white LED backlight. Its core...[Details]
OC faults may be the most frequent and the most frequent of all faults in the inverter. They alarm during the startup process, during the shutdown process, during operation, and even when powered o...[Details]
Preface
In recent years, white light LEDs have gradually replaced incandescent bulbs and fluorescent lamps because they have unparalleled advantages over traditional light sources in terms...[Details]
Introduction
As the country increases its efforts to control the atmospheric environment, motorcycle emission regulations will become stricter year by year, and motorcycles that do not meet the...[Details]
0 Introduction
With the rapid development of social economy and science and technology, electric locomotives, subways and electric vehicles will be widely used. The power conversion and cont...[Details]
0 Introduction
Ultrasonic waves
are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]
The most important components of new energy electric vehicles are power batteries, electric motors and energy conversion control systems. The power battery must achieve high performance such as fas...[Details]
In industry, voltage 0…5 (10) V or current 0 (4)…20 mA is usually used as a method for analog signal transmission, which is also a method often used by programmable controllers. So what are the dif...[Details]
Currently, high-frequency and high-efficiency DCDC converters are increasingly used in automotive electronic systems.
High switching frequency can use smaller power inductors and output filter...[Details]
1 Introduction
At present, people have higher and higher requirements for the quality of life. When people are busy with work, soymilk machine is a new type of household beverage machine. It uses so...[Details]
1 Introduction
With the development of computer technology and information technology in the world, the global information age has arrived. All countries are formulating their own development p...[Details]
introduction
The air compressor unit in the operating area of a lead-zinc mine in Guangdong is a key equipment in mining production. There are six imported Ingersoll Rand CENTAC air compress...[Details]
1. Introduction
The advancement of USB technology makes designers prefer USB interfaces in PC peripheral development. However, existing
virtual instrument
development platforms such...[Details]
Microcontroller MCU
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