I'm working on a project related to RF522 recently. I found a program about RC522 on the Internet. Now I can communicate normally, but there are some questions that I can't figure out. For example, ho...
Most of the RPi PICO pins support PWM, which can easily achieve the breathing light effect.from machine import Pin, Timer, PWMLED = PWM(Pin(25))n = 0def breathing(t):global nLED.duty_u16(abs(32000- n*...
1. Thickness values (mil) of three commonly used prepregs under different conditions. Copper represents the TOP and BOTTOM layers, gnd represents the power supply or ground layer, and signal represent...
[i=s] This post was last edited by paulhyde on 2014-9-15 09:11 [/i] Help, does anyone know how to design a low pass elliptic filter with a cutoff frequency of 10m (or other)? Is it better to use an ac...
IAR for ARM 6.10, J-Link emulator 4.22b, LM3S9B95 C5 version chip. The hardware diagram is attached. The error message is AHBID error? I really don't understand. The emulator is fine, even a 9B96 boar...
[align=center][b][font=宋体][size=14.0pt]Disassembly of small reduction motor[/size][/font][/b][/align][align=center]DIY&Sharing—GravityShare[/align][align=center][align=center][font=宋体][size=12.0pt][hr...
The jammer is a signal blocker, mainly composed of a chip and a radio transmitter. When the car owner presses the remote control lock button, the jammer interferes with the electronic lock receivin...[Details]
The structure of an LCD TV primarily consists of the LCD display module, power module, driver module (primarily including the main driver board and tuner board), and keypad module. LCD display modu...[Details]
1 Introduction
In the mid-1960s, American scientist Maas conducted extensive experimental research on the charging process of open-cell batteries and proposed an acceptable charging curve for ...[Details]
In the summer of 2025, BlueOval SK, a joint venture between Ford and SK On, officially started production at its first battery factory in Kentucky.
According to the original plan, this w...[Details]
Have you ever heard stories about "crazy appliances"? Think of microwaves that turn on automatically or ovens that preheat without any human input? With radios and electromagnetic interfaces ubiqui...[Details]
Smartphones have become essential digital devices, and the growing number of smartphone-centric applications is enriching people's lives. As users, they desire a better app experience and a wider r...[Details]
The practice of warming up a car originated with gasoline-powered vehicles. Warming up the engine allows it to enter a better working state and ensures good lubrication. This has become a habit for...[Details]
Wearable technology is taking off, with applications evolving rapidly, from smartwatches to fitness trackers and even smart wigs! Bluetooth Smart is at the center of this revolution. This is the se...[Details]
As the power density of modern electronic systems continues to increase, effective thermal management has become critical to ensuring system performance, reliability, and longevity—especially in hi...[Details]
Industrial equipment plays a significant role in improving industrial automation and accelerating production efficiency. Industrial HMIs (Human-Machine Interfaces) serve as a communication platform...[Details]
The number of new energy vehicles in use is increasing, and there are multiple choices available. New energy vehicles can be divided into hybrid and pure electric, and the types of hybrid include m...[Details]
introduction
Commercial air conditioner PCBs involve both high-voltage and low-voltage power. The power supply for commercial air conditioners often passes through the controller. This forces ...[Details]
We often notice that some safety light curtains have EDM function. What does EDM mean here? What is its function?
The full name of EDM is External Device Monitor, which means external device m...[Details]
Comparison instructions compare two numbers, IN1 and IN2, of the same data type. IN1 and IN2 are located above and below the contact, respectively, and their data types must be the same. Operands c...[Details]
The World Conference (WC 2025) recently opened in Shanghai. This year's event, covering over 70,000 square meters for the first time, attracted over 800 exhibitors, showcasing large models, AI term...[Details]
RF/Wirelessly
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