Raspberry Pi and Arduino - Go to The Next Level - Debug Serial Communication if Can’t Connect

This tutorial addresses common issues with serial communication between an Arduino and a Raspberry Pi. It covers debugging steps, such as checking USB connections and port settings, and explains how to resolve 'device busy' errors by ensuring only one program uses the serial communication at a time. The tutorial also emphasizes the importance of uploading the correct program to the Arduino and initiating the signal properly.

What is a common error when the serial communication cannot be established?

• Overheating of components

• Low battery

• Incorrect port or disconnected device

• Device not powered on

Which command can be used to check the available ports on a terminal?

• ifconfig

• lsusb

• ls /dev/tty*

• ping

Why might a 'device or resource is busy' error occur?

• The device is overheating

• Multiple programs are using the serial communication

• The device is not connected

• The port is incorrect

What should be done before trying to communicate with the Arduino?

• Disconnect all cables

• Upload the correct program to the Arduino

• Ensure the Arduino is powered off

• Change the baud rate

What is essential to start the serial communication on the Arduino?

• A reset of the device

• A unique port number

• A begin command in the program

• A specific baud rate