Troubleshooting Tips for Common Errors
All the sketches for the projects in this book can be downloaded from https://www.nostarch.com/arduinohandbook2/ and have been verified to work correctly. However, when you compile a sketch in the Arduino IDE, there are a number of problems that you may encounter.
This section will go through three of the most common types of errors, explaining why they occur and how to fix them. When an error occurs, the monitor box at the bottom of the IDE will helpfully highlight the line of code that caused the error, as shown in Figure A-1. This information will be invaluable to you in fixing your code.
FIGURE A-1: The IDE will highlight the line where the error has occurred.
UPLOAD ERROR
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