[size=4]I did some arm development some time ago, mainly writing arm startup software and porting uCOS-II to arm7. My experience is very basic, and it is all very basic. Now I share it with you, hopin...
When using Cadence's pad designer to make pads, you will encounter the problem of designing the size for thermal relief and anti pad.
Thermal relief: The formal Chinese translation should be called an...
[i=s]This post was last edited by hjl240 on 2014-2-10 16:07[/i] [align=left]Many people have made love water lights. There are many related videos on the Internet, but there are not many specific ways...
First, randomly select a five-star red flagand use PHOTO SHOP to compile it into a 170*96 pixel image. This example uses a small image of 170*96 pixels. You can use PHOTO SHOP to compile any image int...
I don’t know what’s going on, but the sending keeps failing. Is there any nrf24l01 example for me to refer to, or someone can help me figure out where the problem is [code]u8 NRF_WriteReg(u8 reg,u8 va...
[i=s]This post was last edited by snoweaglemcu on 2015-12-23 23:28[/i] Although the graphical interface based on STemWin was finally made, it did take a lot of detours and encountered many unexpected ...
High efficiency and low standby power consumption are two major challenges in today's switching power supply design. Resonant topology or LLC topology is becoming increasingly popular because it ca...[Details]
In early 2002, I started to write a working program for an IC card prepaid electricity meter. The meter used Philips' 8-bit 51-expanded single-chip microcomputer
87LPC764
, and wa...[Details]
1. Overview
Will passive devices
produce nonlinear intermodulation distortion? The answer is yes! Although there is no systematic theoretical analysis, it has been found in engineerin...[Details]
Introduction
Power subsystems are becoming more and more integrated into the overall system. Power systems have moved from being separate "essential dangerous devices" to being monitorable...[Details]
With the development and widespread application of computer technology, especially in the field of industrial control, computer communication is particularly important. Although serial communication g...[Details]
5. Identifiers and keywords of C language
A complete PIC microcontroller C language program usually consists of six parts: include files (i.e. header files 1, variable definitions, variable de...[Details]
1. What is temperature?
Heat is a type of molecular motion. The hotter an object is, the faster its molecules move. Absolute zero is defined as the temperature at which all molecular motion ...[Details]
1. Disadvantages of choosing too high a voltage level
Choosing too high a voltage level will result in too high an investment and a long payback period. As the voltage level increases, the...[Details]
Abstract: In recent years, with the establishment and grid-connected power generation of a large number of solar photovoltaic power stations at home and abroad, photovoltaic grid-connected inverter...[Details]
LED guardrail lights use fluorescent tubes or LEDs as light sources and continuous guardrails as carriers to form an approximately linear guardrail light strip. This article mainly introduces...[Details]
At present, a large number of cooling tower fans, speed fans and special fans are in use in petroleum, chemical, pharmaceutical, metallurgical and other enterprises. Some fans have no monitoring in...[Details]
Features
POE technology can ensure the safety of existing structured cabling while ensuring the normal operation of the existing network and minimizing costs. The IEEE 802.3af standard is ...[Details]
When developing electronic products with processors, how to improve anti-interference ability and electromagnetic compatibility?
1. The following systems should pay special attention to anti-...[Details]
At present,
the control system used in
automobiles
can be divided into three parts from the functional point of view:
sensor
unit, control unit and execution unit. Among them,
th...[Details]
The number of timers/counters and interrupt sources directly determines the performance of the microcontroller. The MCS-51 microcontroller has two programmable 16-bit timers/counters and five inter...[Details]