Hello friends! Today we will learn how to restart an Arduino program deliberately and, more importantly, distinguish a real microcontroller reset from simply starting our application logic again. These operations can look similar on the Serial Monitor while leaving the hardware in different states. For the main example, we will use a classic Arduino Uno with an ATmega328P and its watchdog timer. We will also revisit the two approaches in the original tutorial: connecting an output pin to RESET and calling a function pointer at address zero. Both need important qualifications before they are used in a project. The original wiring image is retained below for reference, but the recommended example does not need that jumper. Remove any output-to-RESET connection before following the watchdog p ...