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...
June 4 news On February 27, Samsung released the Chinese version of the Galaxy Buds + true wireless earphones, first available in black, white and blue, and later in dazzling red. According to t...[Details]
Solid-state lidar sensors Velarray H800 and Velarray M1600, long-range Alpha Prime sensors... These advanced Velodyne Lidar lidar solutions were all unveiled at the 2021 Guangzhou International Auto ...[Details]
The official website of the Ministry of Industry and Information Technology released the "Notice on the Settlement and Audit of the Subsidy Funds for the Promotion and Application of New Energy Vehic...[Details]
Ferrari's new "smart helmet" trademark application may be approved by the United States Patent and Trademark Office. The technology could revolutionize sports car events and motorsports. The patent...[Details]
Recently, according to @数码闲聊站, the nova 7 SE 5G Lohas version will be released soon, and the rendering pictures of the phone were released. This will be the version with the lowest positioning ...[Details]
Virtualization is a technology that uses computing resources and devices in a fully functional way, regardless of their physical layout or location. This includes dividing a single physical computer ...[Details]
ARM microprocessors can support up to 16 coprocessors for various coprocessing operations. During program execution, each coprocessor only executes coprocessing instructions for itself and ignores ins...[Details]
Jiwei.com reported on February 7 that the New Year's Eve dinner event between Lei Jun and Mi fans came to a successful conclusion last night. During the discussion session, Lei Jun revealed that MIX ...[Details]
This is a 51 single-chip microcomputer course design I made. The single-chip microcomputer model is STC89C52, and the ultrasonic module is HC-SR04 The microcontroller source program is as follows: ...[Details]
Putting the topic of seeing the essence through the surface into the power supply industry may puzzle many netizens. If the power supply can be judged by the surface, then what is the point of profes...[Details]
1 Brief Introduction and Flash Structure of C8051Fxxx MCU The C8051Fxxx series of devices is a high-speed MCU series launched by Silicon Labs. This MCU is a fully integrated mixed-signal system-on...[Details]
As shown in the figure, each TIMER of STM32 has an orthogonal encoder input interface. TI1 and TI2 are input filtered, and edge detection generates TI1FP1. TI2FP2 is connected to the encoder module. ...[Details]
1.
The maximum negative jump distance of the relative transfer instruction of MCS-51 is 127B.
2.
When the MCS stack pointer SP=00H. Pointer SP=00H.
3.
Call subroutine instructions (such as: CALL)...[Details]
Last week, U.S. federal judge Lucy Koh rejected Qualcomm's appeal to suspend the U.S. Federal Trade Commission's (FTC) antitrust ruling against it. The FTC's penalty against Qualcomm includes reshapi...[Details]
Capacitor step-down DC regulated auxiliary power supply
A novel capacitor step-down DC voltage regulator circuit, which does not contain a transformer and is composed of only a few simple electroni...[Details]