The program is as follows. I connected the cs pin to vcc and used a 12864 with a 5v voltage. I previously suspected that the display was not displayed because the pin was only 3.3v, but then I added a...
Rapid Engineering Prototype (REP) #006 shows a custom solution for the MAX2269 linear power amplifier (PA) tuned for Japanese cellular CDMA applications. The PA is capable of providing 17% PAE at +16d...
I'm working on a project recently, and I need to use 12864 display in the project. I usually think this is a relatively simple program, but after I downloaded the program to the board, no matter how I...
In recent years, chip shortages have been a hot topic in the industry. Despite the continuous expansion of production by international giants such as TSMC, the chip shortage problem has not been allev...
I made a board using C8051F120, and a problem occurred during debugging. When initializing the port, I set P0~P3 as ordinary IO ports and set them to push-pull, and set the lower two bits of P4 and P5...
We have a lot of experience but also a lot of shortcomings. We hope to combine the forum topics, strengthen communication in the group, and make progress together. We look forward to your joining. QQ ...
0. Introduction
In daily life, we often see some special-purpose vehicles. When these vehicles pass through intersections, they often obtain the right of way at intersections by temporarily op...[Details]
Remote keyless entry (RKE) systems have become popular with users, with more than 80% of new cars in North America and more than 70% in Europe equipped with RKE systems. In addition to the obvious ...[Details]
1 Introduction
Intelligent control instruments are one of the most commonly used controllers in industrial control. They are mainly aimed at a specific parameter (such as pressure, tempera...[Details]
12v Lead Acid batteries used in trucks, cars, RVs and uninterruptible power supplies are usually rated at 12V. This circuit monitors the battery, the charge and discharge curves, gives the cu...[Details]
With the widespread application of new services and technologies in the communications industry, the scale and capacity of operators' network construction are getting larger and larger, and the ris...[Details]
The serial interface real-time clock chip DS1302 launched by Dallas Company in the United States can trickle charge the backup battery of the clock chip. Due to the main features of the chip such a...[Details]
introduction
Steam turbines are driven by high-temperature and high-pressure steam generated by boilers to run at high speed. They are key power equipment in thermal power plants. The emergenc...[Details]
As the global LED market demand continues to increase, my country's LED industry will face huge opportunities in the future. However, the core LED technology and patents are basically monopolized b...[Details]
LED is now known as the fourth generation of light sources. High-power LED has many advantages over traditional light sources in outdoor lighting.
1 LED lamps have high light efficiency
C...[Details]
Nowadays, more and more people have digital cameras. The convenience and speed of digital cameras have gradually replaced film cameras and become the main tool for people's daily photography. The n...[Details]
At present, with the diversification of portable products and the almost harsh requirements for audio and video parts, the power consumption requirements of the whole machine have been raised to a ...[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]
This article focuses on closing the feedback loop of an isolated power supply using a TL431 shunt regulator. The article discusses a method to extend the bandwidth of the power supply control loop ...[Details]
It should be understood as follows: DC-DC means direct current to direct current (conversion of different DC power values). Anything that meets this definition can be called a DC-DC converter, incl...[Details]
1 Introduction
The stepper motor is an actuator of an open-loop servo motion system, which is controlled in a pulse mode and outputs angular displacement. Compared with AC servo motors and DC servo ...[Details]
Microcontroller MCU
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