Raspberry pi uart: a comprehensive guide

If you’re a Raspberry Pi enthusiast looking to explore the world of UART communication, you’ve come to the right place. In this comprehensive guide, we will delve into all things UART on Raspberry Pi, from understanding the basics to practical implementations and troubleshooting tips. Let’s embark on this journey into the fascinating realm of UART communication!

Understanding uart

UART, which stands for Universal Asynchronous Receiver/Transmitter, is a popular serial communication protocol used for transmitting and receiving data between electronic devices. It operates asynchronously, meaning there is no separate clock signal between the sender and receiver. Instead, UART relies on start and stop bits to frame the data being transmitted.

Raspberry Pi, a versatile single-board computer, comes equipped with GPIO (General Purpose Input/Output) pins that can be configured to support UART communication. These GPIO pins allow you to connect your Raspberry Pi to various external devices, such as sensors, GPS modules, and microcontrollers, using UART.

Enabling uart on raspberry pi

Before you can use UART on your Raspberry Pi, you need to enable it. Follow these steps:

  1. Open the Raspberry Pi Configuration tool by entering the following command in the terminal:


sudo raspi-config

  1. Navigate to „Interfacing Options” and select „Serial.”
  2. Choose whether you want to enable the hardware UART (ttyS0) or the software UART (ttyAMA0). In most cases, enabling ttyS0 is recommended.
  3. Reboot your Raspberry Pi to apply the changes.

Using uart in python

Once UART is enabled, you can start using it in your Python projects. The serial library in Python allows you to easily configure and communicate over UART. Here’s a simple example:


import serial
ser = serial.Serial(’/dev/ttyS0′, 9600) # Replace with your UART port and baud rate
while True:
data = ser.readline()

Common uart applications

UART on Raspberry Pi opens up a world of possibilities for various applications, including:

  • Wireless communication with other devices
  • GPS tracking and navigation
  • Data logging from sensors
  • Interfacing with microcontrollers


What is uart on raspberry pi?

UART on Raspberry Pi is a serial communication protocol that allows data transfer between the Raspberry Pi and external devices. It uses GPIO pins for UART communication.

How do i enable uart on my raspberry pi?

To enable UART on Raspberry Pi, use the Raspberry Pi Configuration tool, navigate to „Interfacing Options,” and select „Serial.” Choose whether to enable hardware UART (ttyS0) or software UART (ttyAMA0), and then reboot your Raspberry Pi.

Can i use uart with python on raspberry pi?

Yes, you can use UART with Python on Raspberry Pi. The serial library in Python allows you to configure and communicate over UART with external devices.

What are some common applications of uart on raspberry pi?

Common applications of UART on Raspberry Pi include wireless communication, GPS tracking, data logging from sensors, and interfacing with microcontrollers.

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