Cause of the incident: I helped someone design an electronic product in my spare time. I was responsible for writing ARM code and producing schematics, and another engineer produced PCBs. Because the ...
Title of Work
Smart car based on ESP32 road sign recognition
Author: Wang Zhiyuan
1. Introduction
The smart car based on ESP32 road sign recognition is ESP32 as the master control, controlling the mov...
Take the SD card as an example. Registry [HKEY_LOCAL_MACHINE\Drivers\BuiltIn\SDHC_SMDK2440] "Order"=dword:21 "Dll"="sdhc_sc2440.dll" "Prefix"="SDH" "DMAChannel"=dword:0 ; DMA channel to use. Set to 0x...
Regarding the issue of using sensors to sample minute changes in liquids? I want to use sensors to sample minute changes in liquids, and then I tried hanging a bottle and using sensors to sample chang...
I use GPRS to debug and send text messages, but I don't know how to convert the text into PDU mode. Or how to convert the hexadecimal text received in the hyperterminal into Chinese?...
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]
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]
AD8205 is
a single-supply high-performance differential
amplifier
launched by
Analog
Devices of the United States
. The typical single-supply voltage is 5V, and its common-mode volta...[Details]
Aromatic gases are widely present in food, medicine, cosmetics and various daily chemical products, such as snacks, liquor, spices, Chinese herbal medicines, plasters, perfumes, soaps, shampoos, et...[Details]
1. System Structure
This system is a simulation system of indoor air-conditioning temperature/humidity control system. The data acquisition and control center collects temperature/humidity...[Details]
In recent years, with the rapid development of the information industry, dot matrix LED display screens have been widely used in various advertising and information display systems such as the fina...[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]
Today, the value of electronic components in cars accounts for 15-20% of the total vehicle. In the future, this proportion may be as high as 30-40% as more safety electronics, fuel consumption and ...[Details]
Abstract: Aiming at the needs of coal-rock acoustic emission signal monitoring system, a data acquisition circuit with 24-bit resolution and 16-channel synchronous data acquisition function is desi...[Details]
Temperature compensated quartz crystal oscillator (TCXO) is widely used as a high-precision frequency source in communication systems, radar navigation systems, precision measurement and control sy...[Details]
With the continuous advancement of various technologies in the field of measurement and control, the baseband subsystem of general measurement and control equipment has entered the fourth generation o...[Details]
Abstract: Based on the ZigBee parking lot SMS car search system, the location of the vehicle in the parking lot is sent to the owner through SMS, which is convenient for the owner to quickly find ...[Details]
Against the backdrop of global warming, energy conservation and emission reduction have become a global hotspot and focus, which has also sounded the clarion call for the take-off of the LED lighti...[Details]
1 Overview
In the field of traditional lighting, the concepts and definitions of lamps and lamps are clear. Lamps and lamps have their own applicable product standards, supporting technical st...[Details]
PCB Design
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