You're reading from Raspberry Pi Pico DIY Workshop

Product typeBook

Published inMay 2022

PublisherPackt

ISBN-139781801814812

Edition1st Edition

Concepts

Single Board Computers

Authors (2):

Sai Yamanoor

Srihari Yamanoor

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Using the UART interface to communicate between two Pico boards

In this section, we will discuss the Universal Asynchronous Receiver/Transmitter (UART) interface and its applications. We will be making use of two Pico boards to transmit a message from one Pico to another. The second Pico echoes back the incoming message. Before we jump into the example, let's take a quick look at the UART interface.

The UART interface

The UART interface is a communication protocol using two lines, namely a transmitter and a receiver (shown in the following figure). As the name suggests, the protocol is asynchronous; that is, there is no reference clock signal for the communication. The communication happens at a preset speed known as a baud rate. Typical baud rates include 9600, 19200, 38400, and so on.

The UART interface is used to communicate with sensors such as GPS sensors, dataloggers, and so on. The following figure shows the connection between two devices. The receiver (RX) of...

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Raspberry Pi Pico DIY Workshop

Published in: May 2022Publisher: PacktISBN-13: 9781801814812

Authors (2)

Sai Yamanoor

Sai Yamanoor is an embedded systems engineer working for a private startup school in the San Francisco Bay Area, where he builds devices that help students achieve their full potential. He completed his undergraduate work in mechatronics engineering from Sri Krishna College of Engineering and Technology, Coimbatore, India and his graduate studies in mechanical engineering at Carnegie Mellon University, Pittsburgh PA. His interests, deeply rooted in DIY and open software and hardware cultures, include developing gadgets and apps that improve the quality of life, Internet of Things, crowdfunding, education, and new technologies. In his spare time, he plays with various devices and architectures, such as the Raspberry Pi, Arduino, Galileo, Android devices and others. Sai has earlier published a book titled Raspberry Pi Mechatronics Projects.
Read more about Sai Yamanoor

Srihari Yamanoor

Srihari Yamanoor is a mechanical engineer, working on medical devices, sustainability, and robotics in the San Francisco Bay Area. He completed his undergraduate studies in mechanical engineering from PSG College of Technology, Coimbatore, India and graduate studies in mechanical engineering at Stanford University. He is certified in SolidWorks, simulation, sustainable design, PDM as well as in quality and reliability engineering and auditing. His has a wide range of interests, from DIY, crowdfunding, AI, travelling, photography to gardening and ecology.
Read more about Srihari Yamanoor

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