The RISC-V single-board computer used in this trial provides us with 40 pin interfaces, including the SPI interface. WhatI want to share today is how to use SPI to drive the ws2812B colorful lamp bead...
1. Battery voltage detection .
2. Voltage displayed on LCD1602
3. When the voltage is lower than 2.6V, the indicator light flashes.
4. When the voltage is higher than 3.3V, the indicator light flashes...
"Electromechanical System Testing and Control from Entry to Mastery" is aimed at the professional knowledge background of undergraduate graduates majoring in electromechanical engineering. First, in t...
The picture shows an LCD power supply circuit. Boosting 5V to 9.6V is a normal boost circuit. I would like to ask about the generation principle of +18V and -7.5V....
An example of troubleshooting a trigger failure on a Tektronix TDS7254 oscilloscope1. Instrument model:Tektronix oscilloscope TDS72542. Fault phenomenon:The customer reported that after the oscillosco...
I want to sample at the start and end of the effective vector of svpwm. The method I have thought of now is to use the ADC's s/w software trigger, but I don't know how to use the software trigger. How...
Recently, a mobile phone equipped with Rockchip RK3399S was officially launched. This is a six-core ARM chip with an integrated Mali T860 quad-core GPU. It is priced at US$399. This product is the Pi...[Details]
With the rapid development of electronic and communication technology, high-performance chips and integrated circuits are increasingly used. The power of electronic device chips is increasing, while ...[Details]
High precision, generally up to ±1.0%R, ±0.5%R, high precision type up to ±0.2%R;
Good repeatability, short-term repeatability can reach 0.05%-0.2%. It is precisely because of its good repeatability ...[Details]
Installation method of submersible liquid level meter The input liquid level gauge is based on the principle that the measured static pressure of the liquid is proportional to the height of the l...[Details]
During CES 2020, Velodyne, the originator of LiDAR , released a LiDAR called Velabit , and announced that the mass production price is only $100. In the past ten years, the price of automotive LiDAR ...[Details]
*=========================================================== 20x4 character LCD main program, compilation software (I CC AVR_6.31) CPU internal crystal oscillator 8M data line B0~B7 connects PORTB, E...[Details]
With the development of science and technology, more and more products have been updated. I think the fastest updated one is cars. Many car brands attract consumers by updating and changing the confi...[Details]
In recent years, FPGA-based soft-core processors have been valued and developed in the embedded market for their high design flexibility and low cost. Representative soft-core processors include Aher...[Details]
Nowadays, power supply has become a component that many consumers pay more attention to. With the development of technology, the materials used in DIY products have become one of the elements tha...[Details]
In modern society, people attach more and more importance to home security, especially in newly built high-end residential buildings, which are more likely to attract the interest of thieves. Ther...[Details]
The button is a commonly used and simple human-computer interaction operation. The button is actually a non-self-locking touch switch. When pressed, the contacts will close, and when released, the co...[Details]
Tesla's official Weibo account announced that it has established a data center in China to localize data storage, and will continue to add more local data centers. All data generated by vehicles sold...[Details]
Electric window lifts have almost become a basic feature of cars. Currently in China, more than 80% of passenger cars are equipped with electric window lifts, and this proportion continues to rise....[Details]
Deng Zhonghan, member of the National Committee of the Chinese People's Political Consultative Conference and academician of the Chinese Academy of Engineering, suggested in his proposal for this yea...[Details]
On October 23, Wuhan Weilai Energy Co., Ltd. ("NIO Energy") signed a cooperation agreement with Wuhan Shouyi Technology Innovation Investment Development Group Co., Ltd. ("Shouyi Technology Innovat...[Details]