I am working on a project about 2420, but I found that after configuring the registers, I cannot read back the values I just configured. All I read back are flag frames. I don't know why, and the regi...
Features of LED power supply automatic test system1. Supports relatively complete test of LED driving power supply2. Can accurately read the average power supply value and current effective value of t...
CAMERA driver, two threads are opened, one CODEC thread and one PREVIEW thread, both interrupts are enabled, why can't I see the thread? Why can't I generate an interrupt? There is no video source?...
Why Noise Sources Matter Whether noise is important or not depends on how it affects the operation of the target circuit. For example, a switching power supply with significant output voltage ripple a...
At the beginning of application, DSP and MCU products were clearly divided: DSP was used in fields that required large amounts of data processing due to its excellent ability to run various high-densi...
Dear seniors, I am planning to learn cortex A8 + LUNIX recently. What are the general learning steps? Do you have any good development board recommendations? Please advise:)...
Today, with the increasing integration of functions, mobile phones can also be used as portable media players (PMP), digital cameras, handheld computers (PDAs), and even global positioning systems ...[Details]
Microcontrollers (MCUs), which are widely used in automotive electronics, are rapidly facing time and cost pressures. The main advantage of using MCUs has always been to create high-level system in...[Details]
introduction
Throughout the history of automotive lighting, power has always played an important role. Initially, cars only needed headlights to see the road in the dark. Later, other light so...[Details]
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]
With the continuous improvement of the requirements of intelligent building security systems and the continuous improvement of people's safety awareness, indoor anti-theft has gradually attracted peop...[Details]
I've been studying dot matrix recently. It looks simple, but it takes a while to master it completely! The 8*8 dot matrix hardware circuit I'm making now is like this. The row is driven by 74HC138 + t...[Details]
LED technology has made rapid progress, and improvements in chip design and materials have promoted the development of brighter and more durable light sources, and the scope of light source applica...[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]
1 What is an LED floodlight?
LED downlights are also called spotlights, projection lamps, and spotlights. They are mainly used for architectural decorative lighting and commercial space lighti...[Details]
1 Introduction
Lijia'an Yellow River Diversion Culvert is a large gravity diversion gate in the lower reaches of the Yellow River. The Yellow River Diversion Culvert is located in Lijia'an Vi...[Details]
The circuit has overcharge protection, over-discharge protection, over-current protection and short-circuit protection functions. Its working principle is analyzed as follows:
1 Normal state
...[Details]
As the automobile consumer market heats up, the safety performance of automobiles has attracted more attention from consumers. When driving at high speed, tire failure is the most worrying and diff...[Details]
3. Driving circuit design
The power driver uses a field effect tube, which is a field-controlled device with a capacitance effect between the gate and source, so it has high requirements for t...[Details]
O Introduction
Virtual instrument is a new type of instrument developed with
the development of
computer
technology, electronic measurement technology and communication technology. ...[Details]
Abstract A two-dimensional sound source directional system is designed using the ADSP BF533 DSP processor. The system is based on the time difference of arrival of sound waves and uses a phase matc...[Details]
Embedded System
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