Hello friends! Today we will detect circular features in a still image using MATLAB. We will use the bicycle photograph from the original tutorial, locate candidate wheel boundaries and display the estimated centres and radii over the image. The aim is to understand the complete process rather than copy one sensitivity value and expect it to work everywhere. Image size, contrast, the expected radius and the chosen preprocessing all affect the result. We will make those choices explicit and explain how to change them. This is a circle-detection tutorial, not a wheel-recognition system. A circular sign or another rounded object can produce a valid detection too. Once the basic detector works, additional information about position, size or colour can help decide which circles belong to the ob ...
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 ...
