In the previous article, we discussed that there are eight control buttons, but the number of I/O ports on the microcontroller is insufficient. One button called PIN_ESC is connected to D8, which is pin 15, but it is actually non-functional. Pin 15 is pulled down to ground through a 10k resistor. This button is the … Read more
The GPIO pins of the ESP32 or Raspberry Pi 5 can collect signals to be processed by Siemens PLC, and then return the processed results to the GPIO pins of ESP32 or Raspberry Pi 5, achieving bidirectional communication and control. The following are the specific implementation methods:1. Hardware ConnectionUsing Digital SignalsESP32/Raspberry Pi 5 → Siemens … Read more
In industrial production, logistics warehousing, laboratory testing, and other scenarios, the real-time data transmission between weighing instruments and computers is a key step in achieving automated recording, analysis, and management of weight data. However, in practical applications, data fluctuations often occur—where the transmitted weight values fluctuate frequently and irregularly, failing to accurately reflect the true … Read more
Today, let’s discuss how to use PLCs to create a practical smart home control system. I applied PLCs in a villa project for smart home control, which not only allowed the owner to experience the convenience brought by technology but also significantly improved the system’s stability and maintainability. Basic Concepts The biggest advantage of using … Read more