Which serial communication protocol is best for long distance?

Which serial communication protocol is best for long distance?

There are many different types of serial communication protocols like I2C and SPI which can be easily implemented with Arduino and today we are going to look at another most commonly used protocol called RS485 which is very commonly used in high noise industrial environments to transfer the data over a long distance.

What is the maximum standard serial communication rate you can implement with the PC?

Other “standard” baud are 1200, 2400, 4800, 19200, 38400, 57600, and 115200. The higher a baud rate goes, the faster data is sent/received, but there are limits to how fast data can be transferred. You usually won’t see speeds exceeding 115200 – that’s fast for most microcontrollers.

What is the difference between TTL and RS232?

RS232 vs TTL: What’s the difference? RS232 more extreme voltages help make it less susceptible to noise, interference, and degradation. The minimum and maximum voltages of RS-232 signals are +/-13V, while TTL signals are 0 to 3.3V/5V.

What is the fastest serial communication protocol?

Advantages of using SPI

  • The protocol is simple as there is no complicated slave addressing system like I2C.
  • It is the fastest protocol compared to UART and I2C.
  • No start and stop bits unlike UART which means data can be transmitted continuously without interruption.

What is used for long distance communication in microcontroller?

Advantages of Serial Communication While parallel communication might seem simpler, serial communication is more economical in terms of long-distance communication, or cable channels that span long distances. When receiving data, the microcontroller on the other end can convert the information back to a parallel form.

Which interface is used for long distance communication?

The RS-485 has been used since the late 90s in a variety of industrial systems where data needs to be transmitted over long distances, in the presence of electromagnetic interference. As a rule, the RS-485 interface is used together with specialized protocols, such as ModBus or DMX512.

Which is used for long distance communication in embedded systems?

Explanation: A slightly different serial port called RS232 is used for long distance communication, otherwise the clock may get skewed. The low voltage signal also affect the long distance communication.

Which is the serial communication protocol for Arduino?

There are many different types of serial communication protocols like I2C and SPI which can be easily implemented with Arduino and today we are going to look at another most commonly used protocol called RS485 which is very commonly used in high noise industrial environments to transfer the data over a long distance.

Which is better RS485 or Arduino serial communication?

Signal High and Lows are measured against the GND level so shifting the GND level will have a disastrous effect on the data transfer. On the other hand, RS485 is more industry-based communication which is developed for a network of multiple devices that can be used over long distances and at greater speeds too.

How to create long-distance serial communication between…?

In order to connect two Arduino boards via the RS-485 interface, we need a special module. Typically, such modules use the popular MAX485 chip. Project schematic. Cable connection with a length of several meters. Note: In the figure above, wires A and B are straight. This will suffice if the distance is small.

How to communicate between two Arduinos at 1000m?

The Arduino Uno will be the transmitter that will perform the reading of two buttons and when the button B0 is pressed, a command will be sent to light the red led and when button B1 is pressed the blue led will be lit. To turn off the leds just press B0 or B1 to turn off the respective led.