Code running on this Arduino, which is part of the eye2see library, allows it to send debugging information to the eye2see probe. With a screen, ...

(Hint: there’s no Arduino-provided code involved; hardware registers and the __asm keyword show up.) If you learned embedded programming in an earlier era, this will probably seem glaringly obvious.

The Debugger helps you to better understand your Arduino code, and simplifies the debugging process. However, it isn't available for all Arduino boards. Here's a complete list of the only boards ...