12/29/2023 0 Comments Raspberry pi real time clock moduleIn order to achieve this size and price, several non-essential items usually found on a computer had to be omitted. The Raspberry Pi is an ultra-small and ultra-low cost computer. # include "M5Unified.For the lastest installation instructions please refer to RasClock Official website ![]() Pressing button A will send control commands via RS485 to control the color of the receiving end's RGB light. RS485 Transmitter Using the following code, we will utilize the M5stickc Plus + RS485 HAT to create an RS485 transmitter. Connect a 120-ohm matching resistor is needed at the AB end of RS485. 12V power supply x1 Operational steps: 1.Connect the RS485 HAT to the M5stickc Plus. And then install the `M5Unified and FastLED libraries` in the library manager, or manually clone and install them from the following GitHub links into the C:\Users\PC\Documents\Arduino\libraries directory: *M5Unified: () *FastLED: () Setting up the Hardware Environment Devices needed:ħ. Setting up the Arduino Environment First, please refer to the Arduino IDE setup tutorial to complete the basic software installation. Here we use RS485 HAT, RS485 HAT consists of a 485 automatic transceiver circuit and a DC-DC buck circuit which can drop an input 12V to 5V. Next, we will use the M5Stack device as an example to demonstrate the application of RS485 communication in IoT. As IoT continues to evolve, we have reason to believe that RS485 communication will continue to play an important role, building a solid bridge for interconnection among IoT devices. Future development of RS485 communication: In conclusion, RS485 communication, as an important communication means in IoT, provides a reliable solution for data transmission and communication connectivity between different devices through its features such as long-distance transmission, strong anti-interference capability, and multi-point communication. Agricultural IoT: In agricultural IoT applications, RS485 communication can be used to connect soil moisture sensors, weather stations, irrigation systems, and other devices, enabling remote monitoring of farmland environments and precision irrigation to improve crop yield and quality. The stability and reliability of RS485 communication enable smart building systems to achieve efficient energy management and intelligent control. Smart Buildings: In smart building systems, RS485 communication is used to connect various smart devices, such as lighting control systems, HVAC systems, and security systems, enabling data exchange and centralized management among devices. Through RS485 communication, these devices can achieve remote monitoring and control, enhancing production efficiency and work safety. Industrial Automation: In the field of industrial automation, RS485 communication is widely used for data transmission and control connectivity among various devices such as sensors, actuators, and PLCs. High-speed transmission: RS485 supports data transmission speeds of up to 10Mbps, meeting the data transfer speed requirements of IoT devices. Multi-point communication: RS485 supports multi-point communication, enabling the connection of multiple devices to form a network, meeting the inter-device connectivity requirements in IoT.Ĥ. ![]() Strong anti-interference capability: RS485 communication uses differential signal transmission, exhibiting excellent anti-interference capability, ensuring stable and reliable data transmission in industrial environments.ģ. Long-distance transmission: RS485 communication supports transmission over a maximum distance of 1200 meters, suitable for communication needs among IoT devices distributed over larger areas.Ģ. RS485 communication, as a serial communication protocol, offers several prominent advantages: 1. In this context, RS485 communication, as a reliable communication protocol, is widely used for data transmission and communication connectivity between IoT devices. ![]() With the continuous development of the Internet of Things (IoT) technology, an increasing number of devices require remote monitoring and control.
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