As shown in the figure above, it can be seen that ESP32 is connected to the network normally. The webtest.py code above comes from https://blog.csdn.net/qq_29338243/article/details/88695153 found afte...
Around 2016, I used a car-earning box that was directly plugged into the car's OBD interface. The main function is: the mobile app can read the car's daily driving trajectory and some of the car's ele...
LSM303AGR can measure magnetic fields up to ±50 gauss. The Earth's magnetic field strength is around 0.6 gauss.
In this way, the LSM303AGR can theoretically be used to measure the magnetic field of a ...
2.1.Hello World!Hello world is the beginning of all projects.
1) First, enter the hello world directory in the contiki source code:
cd contiki/exaples/hello-world2) Then you can compile it with the fo...
[size=4] There is a part of the circuit before the rectifier of the power circuit, which is composed of capacitors and inductors. [/size] [size=4]What is the role of using inductors before rectificati...
Electronic crossovers are divided into passive and active types according to whether they use amplifiers. The passive type is composed of resistors and capacitors, has a simple structure and no oth...[Details]
According to information released by the China Passenger Car Association, in October this year, the retail sales of new energy passenger vehicles reached 321,000 units, a year-on-year increase of 141...[Details]
The report of the 19th National Congress of the Communist Party of China outlined a grand blueprint for achieving the "Two Centenary Goals" and clearly proposed to deepen the reform of state-owned ...[Details]
As can be seen in the previous article, using characters one by one to judge commands and communication protocols is not only troublesome, but also has great defects. For example, if a string is enter...[Details]
On July 25, a press conference in Henan reported that Zhengzhou’s mobile communication network has fully returned to normal with the restart of 25,272 base stations. According to preliminary statisti...[Details]
In recent years, there are more and more car theft cases, which bring huge economic losses to people. Various car anti-theft devices have appeared on the market. This car anti-theft system uses the...[Details]
Well-known research organization IDC recently released a report on China's 5G mobile phone shipments in the third quarter, showing that 5G mobile phone shipments in the quarter were about 49.7 millio...[Details]
1 Introduction
There have been many studies on the detection and protection of power grid short circuit and line fault. The short circuit, overload and overvoltage protectors on the ...[Details]
An open-loop motor is a motor without feedback control, also known as a non-closed-loop motor. Its output speed and position are determined by the input control signal, and there is no position or ...[Details]
Introduction
Currently, in embedded systems, image acquisition can be achieved using analog cameras, CCD image sensors or CMOS digital image sensors. CMOS digital image sensors are the most wid...[Details]
PIC16F630 Program Download Instructions 1. Connection between PIC16F630 and downloader PIC kit figure 1 figure 2 Connection Instructions: Pin 1 in Figure 2 is connected to pin 2 in Figure 1...[Details]
Choosing the right battery pack for a handheld device is difficult for manufacturers of portable devices. This is because the choice of battery can have a significant impact on the function, size and ...[Details]
Regardless of whether Huawei TV is released and launched in April, many professional color TV companies will not "take it lightly". Because they know very well that Huawei is not LeTV or Xiaomi. Once...[Details]
‒Newly launched integrated solution that combines Lattice low-power, low-latency FPGA and NVIDIA Orin platform to efficiently bridge sensors to AI applications‒ Shanghai, China - December 7, 2023 -...[Details]
In the previous section, when I set up to disable the watchdog, I set WTCON to 0 and masked the interrupt. As shown below:
This section is to mask the interrupt register:
The follow...[Details]
Analog electronics
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