In the field of industrial automation, timely access to equipment failure information is crucial for improving production efficiency. The PLC SMS alarm technology is an ideal solution to meet this demand. 1. Overview of PLC SMS Alarm Technology PLC SMS alarm is an industrial-grade remote monitoring technology based on GSM/GPRS networks. It achieves equipment failure … Read more
☆ Design Hardware Components: STC89C52 Microcontroller + GSM SMS Module + 4*4 Matrix Keyboard + LCD1602 Display + AT24C02 Storage Chip + Buzzer + Alarm LED Light + Cabinet Open Indicator Light. 1. The STC89C52 microcontroller is used as the control core, with real-time updates displayed on the LCD1602 screen. 2. Package Code Management: The … Read more
☆ Design Hardware Components: STC89C52 Microcontroller + GSM/GPS Module + LCD1602 Liquid Crystal Display + ADXL345 Three-Axis Accelerometer + HC-SR04 Ultrasonic Sensor + MY1680 Voice Module + Photoresistor + Multifunctional LED Light + DS1302 Clock Chip + AT24C02 Memory Chip + Button. 1. The STC89C52 microcontroller is used as the control core, with real-time updates … Read more
☆ Hardware Design Components: STC89C52 Microcontroller + GSM SMS Module + DS18B20 Temperature Sensor + MQ2 Smoke Sensor + HC-SR501 Human Motion Sensor + ADC0832 Analog-to-Digital Converter Chip + LCD1602 Liquid Crystal Display + AT24C02 Storage Chip + Buzzer + LED Light + Button. 1. The STC89C52 microcontroller is used as the control core, updating … Read more
Scan to FollowLearn Embedded Together, Learn and Grow Together Overview AT commands (Attention Command) are a widely used text command line protocol in communication devices such as modems, GSM/GPRS modules, and Bluetooth modules. It originated from the command set designed by Hayes for its smart modem in 1981 and later became the de facto industry … Read more
Source: IoT Media (ulinkmedia) IoT Think Tank Reprint For secondary reprints, please contact the original author Introduction Whether it is NB-IoT or Cat.1, both face a situation of price (cost) competition at the chip and module level. However, for the application market, these two technologies will be the most common connection technologies in the future … Read more
↑ Click the above “Chinese Surveying and Mapping Society“ to quickly follow us Marine research, marine engineering construction, military activities, and resource surveys are all based on ocean environmental monitoring, especially for long-term, fixed-point, real-time, and three-dimensional monitoring of the marine dynamic environment. Seabed-based and buoy observation systems operate underwater, featuring good concealment and long … Read more
If you are still using GSM phones based on earlier signal standards, you better be a bit cautious while using your phone. According to recent reports from foreign media, security researchers have found that they only need to use three NVIDIA GeForce GTX690 graphics cards (GPU) to crack the GSM A5 encryption algorithm. What Is … Read more
This article is authored by: Wang Feng Source: IoT Jianghu (WeChat Official Account: iot521) Compared to cellular networks, the standards of IoT are complex and constantly changing. This article attempts to clarify the principles, characteristics, and application scenarios of different IoT standards through the evolution of smart bicycle locks. First, let’s look at the main … Read more
NB-IoT, Niubility Internet of Things, refers to the powerful IoT technology. Regarding the Internet of Things, I would like to start with two interesting applications… This is not a restricted broadcast. This is the 3D fitness mirror launched by Nake Labs, which tracks your body shape changes through 3D scanning. This smart fitness mirror, named … Read more