Your MegaCore AVR Pinout image has the wrong port numbers for Arduino Pins 2-7. There are other errors I'm sure but I didn't do a complete scan. Arduino Pin 2 is Port E, pin 4. (PE4) Arduino Pin 3 is ...

This is a simple 0 to 9 counter circuit constructed using Arduino! Here, a common cathode 7-segment LED display is connected to Arduino for displaying the digits. The code (Arduino sketch) allows push ...

There are easy ways of getting more I/O pins for any project; shift registers, I2C expanders, or ADCs will give you plenty of pins for whatever project you have in mind. All these require extra ...

In SAMD Arduino it is possible to map an arduino pin number to a specific pin on a per-board basis? Is the same possible with the ESP32 arduino version? I only see extra variables like D1 = 7; in ...

Recently, we published an entry-level Arduino project with a single seven-segment LED display. Although it’s an amazing DIY project, we noted that most of the readers are looking for more advanced ...