Wired Communication

The 4-20mA current loop is one of the most widely used signaling methods in industrial automation. It is commonly used to transmit sensor values such as temperature, pressure, flow and level over long distances with high reliability. Unlike voltage-based signals, the 4-20mA loop uses current to represent a measured value, making it highly resistant to […]

0-10V control signals are widely used in industrial and building automation systems. They provide a simple way to represent a value using a voltage level, commonly for controlling devices such as dimmers, motor drives, valves and HVAC systems. Compared with digital communication protocols, 0-10V signaling is easy to implement but has limitations in noise immunity

A logic analyzer is one of the most useful tools for debugging digital electronics and communication problems. It allows you to see what is actually happening on digital signal lines such as I2C, SPI, UART, One-Wire and other serial interfaces. For many microcontroller projects, a simple USB logic analyzer can save hours of guessing. Instead

Differential signaling is one of the most effective methods for transmitting digital data reliably in electrically noisy environments. It is used in communication systems such as RS485, CAN Bus, USB, Ethernet and many other robust interfaces. Unlike simple single-wire voltage signaling, differential signaling compares the voltage difference between two wires instead of measuring one wire

RS232 is one of the oldest and most well-known serial communication standards. It was widely used for communication between computers, modems, industrial equipment and embedded systems long before modern interfaces like USB became common. Even today, RS232 is still used in industrial equipment, laboratory instruments, POS systems, serial consoles and legacy devices where simple point-to-point

I2C is one of the most common communication buses used in microcontroller projects. It is especially popular for sensors, displays, real-time clocks, I/O expanders, ADCs, DACs and other low-speed peripheral devices. The main advantage of I2C is simple wiring. Many devices can share the same two signal lines, which makes I2C very useful for compact

SPI is one of the most important communication interfaces in embedded electronics. It is commonly used when a microcontroller needs to exchange data quickly with displays, memory chips, ADCs, DACs, radio modules and other high-speed peripherals. Compared with I2C, SPI usually requires more wires, but it can be much faster and simpler at the electrical

UART is one of the simplest and most widely used communication methods in embedded systems. It is commonly used for communication between microcontrollers, computers, GPS modules, Bluetooth modules and many other serial devices. Unlike I2C and SPI, UART does not use a shared clock signal. Instead, both devices must agree on a fixed communication speed,

RS485 is one of the most important electrical communication standards for industrial and long-distance serial communication. It is widely used in automation, building control, energy monitoring, motor drives, PLC systems and many other applications where reliable communication over long cables is required. Compared with RS232, RS485 is more robust, supports longer cable runs and allows

Modbus is one of the most widely used communication protocols in industrial automation. It is commonly found in PLC systems, energy meters, temperature controllers, motor drives, sensors, remote I/O modules and many other industrial devices. Modbus is often used together with RS485, but Modbus and RS485 are not the same thing. RS485 is the electrical