c:/winavr-20100110/bin/../lib/gcc/avr/4.3.3/../../../../avr/lib/avr51/crtm128.o:(.init9+0x0): undefined reference to `main' What does this error mean!!! ......
I like electronic things very much, but I have always been troubled by the resistance, capacitance, etc. of the peripheral circuit. I don't know how to choose and calculate. I am looking for informati...
[i=s]This post was last edited by boming on 2014-7-5 14:45[/i] Here are some unboxing photos for the first time. Exquisite packaging Anti-collision plastic bag added inside Rich supporting CDs and com...
I use a 149 chip and an 8M crystal oscillator. I can't adjust it with the source code in the previous post! ! !Has anyone done this before? ! ! !Please give me the source code. Thanks! ! !...
[backcolor=rgb(238, 238, 238)][size=14px]3G module(client, multiple) needs to connect to the server (one) network. The client needs to upload data information (heartbeat packet, battery power, GPS, al...
Abstract: Firstly, the characteristics of synthetic aperture radar (SAR) are introduced, and then the principle of synthetic aperture radar and the mechanism of . Since synthetic aperture radar can im...
Microcontrollers (MCUs), which are widely used in automotive electronics, are rapidly facing time and cost pressures. The main advantage of using MCUs has always been to create high-level system in...[Details]
Images in science fiction movies often break through the limits of reality, such as in the movie "Minority Report." Tom Cruise uses a multi-touch screen to browse information. Capacitive sensing te...[Details]
With the continuous improvement of the requirements of intelligent building security systems and the continuous improvement of people's safety awareness, indoor anti-theft has gradually attracted peop...[Details]
1. Background:
The instrument system parameter detection and control of the chemical production workshop of Tangshan Coal Gas Coking Plant are all analog instruments, some of which are eve...[Details]
Xiaomi, a well-known Internet phone in mainland China, won a million-unit order contract from China Unicom on November 20 last year, which made Xiaomi famous in mainland China. In April this year...[Details]
LED technology has made rapid progress, and improvements in chip design and materials have promoted the development of brighter and more durable light sources, and the scope of light source applica...[Details]
1 What is an LED floodlight?
LED downlights are also called spotlights, projection lamps, and spotlights. They are mainly used for architectural decorative lighting and commercial space lighti...[Details]
The emergence and development of street lamps are inseparable from the prosperity and progress of cities, which makes street lamps useful. Conversely, street lamps also make the night of the city n...[Details]
Dual Tone MultiFrequency (DTMF) signaling is gradually being used in push-button telephones around the world. It quickly replaced the dial pulse signaling used in traditional rotary phones because ...[Details]
1. Introduction
AS-Interface bus technology is an intelligent network that uses a single cable to connect sensors and actuators to controllers, transmit data, and provide power. It can be used...[Details]
TMC428 is a stepper motor motion controller from TRINAMIC. It can reduce the workload of motor control software design and development costs. The 3-axis stepper motor drive control system based on ...[Details]
Voltage hysteresis is a characteristic of lithium-ion battery and the basis of its existence. The principle is as follows: the thionyl chloride electrolyte of the battery is a strong oxidizing chem...[Details]
O Introduction
Virtual instrument is a new type of instrument developed with
the development of
computer
technology, electronic measurement technology and communication technology. ...[Details]
We often step over automatic doors in our daily lives. For the most part, we only notice them when they are not working. Swiss automatic door manufacturer Kaba Gilgen, together with the process con...[Details]
Abstract A two-dimensional sound source directional system is designed using the ADSP BF533 DSP processor. The system is based on the time difference of arrival of sound waves and uses a phase matc...[Details]