Burn the project in the nRF5_SDK_15.2.0_9412b96\examplesfcecord_text folder to 52840 and read it through NXP's pn532:The data of the NFC block is shown in the red line: Hello World![code]static ret_co...
I usually use the soldering station below to solder things. Sometimes, if I need to work outside, it is not convenient to carry such a large thing, so I will bring a 220V soldering iron. Some of the s...
I have done an experiment on Zigbee communication, which requires communication between the Bluetooth module and the mobile phone Bluetooth module to receive RSSI. For a long time, the problem of garb...
RTRT
Does the clearance below the crystal oscillator refer to the layer where the chip is located or all layers?
Now I find that some designs only have clearance below the layer where the crystal osci...
I would like to ask friends who are participating in the competition and use K210, whether they have encountered the following problems:
Problem 1: When K210 loads the SD card, it is unstable. Sometim...
High-speed motors usually refer to motors with speeds exceeding 10,000 r/min. High-speed motors are small in size, can be directly connected to high-speed loads, eliminate traditional mechanical sp...[Details]
Everyone knows that the 51 MCU has four groups of registers R0-R7. Many friends often have problems using the register group. Although this is not a difficult problem, if an error occurs, it wil...[Details]
Shen Shaojie, the person in charge of DJI’s vehicle-mounted equipment, led a team to publish a new paper. As the development of high-end intelligent driving in urban areas accelerates, this has bro...[Details]
This example uses a key to control the brightness of the LED desk lamp. The default setting is off when powered on. The first press makes the LED fully lit. The second press makes the LED 58% b...[Details]
The simplest C code analysis
To simplify the problem, let's analyze the assembly code generated by the simplest C code:
# vi test1.c
int main()
{
return 0;
...[Details]
The basic principle of the self-excited feedback switching power supply is shown in the figure. When the input voltage is applied, the current flows to the base of the switch tube VTl through Rg, m...[Details]
Shanghai, China, October 24, 2022 -
Aixin Yuanzhi, a company engaged in the development of artificial intelligence visual perception chips and basic computing power platforms, announced that it...[Details]
When I was researching Arduino under Ubuntu, I found that I didn't need to use Arduino IDE for development. In Linux, I also had gcc-avr to directly develop AVR series controllers. So, I couldn't w...[Details]
Balun design for various microwave devices In mixer and push-pull amplifier designs, baluns are often used to connect balanced and unbalanced circuits. Balun design requires precise 180° phase shift,...[Details]
According to previous reports from Jiwei.com, Huawei has filed opposition requests against five European patents that OPPO has been granted since June 2020. Recently, public information on the Europe...[Details]
introduction The collections in the museum are often threatened by human theft, and changes in the surrounding environment can also cause damage to them. Therefore, a very reliable anti-theft system ...[Details]
Lenovo, HP and Dell are still the top three in terms of quarterly growth and market share Sina Digital News on the morning of May 14, Strategy Analytics released a new report today describing the...[Details]
With the development of multimedia technology, the requirements for video switching in real-life applications are becoming higher and higher. In cable TV systems, high-quality video surveillance syst...[Details]
Preface This is a new picture of development that is a mixture of the old and the new, and a transformation of kinetic energy. In the tall red brick factory building with a sense of age, red hot molte...[Details]
RF/Wirelessly
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