Please recommend a few GPRS modules for vehicle-mounted equipment terminals. I found that the price is very cheap. I want to consider using 2G modules....
1. Integrated temperature transmitter The integrated temperature transmitter is generally composed of a temperature probe (thermocouple or thermal resistor sensor) and a two-wire solid electronic un...
Based on embedded Linux, use QT\E to develop T9 input method projectProject budget:¥5,000~10,000
Development cycle: 15 days
Project Category: Embedded
Bidding requirements:Project tags:Qt/E embedded L...
What is mbed? mbed China has the answer: Is mbed suitable for colleges and universities? Mbed is very suitable for colleges and universities and has a wide range of uses, mainly in the following areas...
Recently, I used msp430f249 to replace the original 149. After testing, I found that 249 has a great improvement over 149. The reset performance is much better than 149, the internal clock can reach 1...
One-dimensional barcode recognitionhttp://v.youku.com/v_show/id_XMjM0MTMyMzA4.htmlThis was completed on my 23rd birthday. Every birthday I give myself something as a souvenir.The program is edited usi...
At present, the development of wireless power supply technology for electric vehicles (EVs) is becoming more and more active. In 2012, Volvo of Sweden established Volvo Technology Japan in Tokyo as...[Details]
This program is written to simulate the serial port hardware mechanism. When used, a timed interrupt can be set with a time interval of 1/4 baud rate. The receiving function is called once for ea...[Details]
Automotive applications are particularly sensitive to EMI events, which are unavoidable in a noisy electrical environment consisting of a central battery, bundled wiring harnesses, various inductiv...[Details]
Due to the significant increase in electronic devices in automotive and industrial applications, the automotive and industrial markets continue to play an important role in China's electronics in...[Details]
In this article, the high-performance DSP developed by TI can be used as an effective confidentiality method if it is applied to PC encryption cards.
As an effective network security solution,...[Details]
In order to highlight the concept of "energy saving and environmental protection" of intelligent buildings, solar street lights are designed for intelligent communities. The inclination and capacit...[Details]
DSP (digital signal processor) is used more and more frequently in today's engineering applications. There are three main reasons for this: first, it has powerful computing power and is capable of ...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
Although it is relatively easy to check the stability of a simple amplifier at lower frequencies, it may be much more difficult to evaluate the stability of a more complex circuit. This artic...[Details]
Contact resistance
is the resistance to current flow through a closed pair of contacts. This type of measurement is performed on devices such as connectors,
relays
, and switches. The...[Details]
1 Introduction to HART Protocol
HART (Highway Addressable Remote Transducer), an open communication protocol for addressable remote sensor high-speed channels, was launched by Rosemen in the U...[Details]
With concerns about the growing energy crisis, motor efficiency has become an important and timely topic. This is because motors use 63% to 70% of the electricity produced in the United States and ...[Details]
The serial interface real-time clock chip DS1302 launched by Dallas Company in the United States can trickle charge the backup battery of the clock chip. Due to the main features of the chip such a...[Details]
0 Introduction
Ultrasonic waves
are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]
Our flight had just begun to descend when a gentleman sitting next to me turned to talk to me about engineering—he had seen me reading an engineering journal. The gentleman next to me said that he ...[Details]