You're free to open their circuit, see the sketch used, and run the simulation ... create one to show the project's schematic diagram. Other than Arduino, Wokwi also features popular platforms ...

functional block diagrams, and other programming systems covered under the IEC 61131-3 standard. Not only that, it allows the combination of these types of PLC programming with Arduino sketches.

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 ...

What was your first Arduino program? Probably an LED blinker — that seems to be the “hello world” of microcontrolllers. You probably moved on to things a little more complicated pretty quickly.

STEP 4 Set the board type and the serial port in the Arduino Programmer. STEP 5 Test the microcontroller by using one of the preloaded programs, called sketches, in the Arduino Programmer.

If your board has no printed labels, check out its pinout diagram documentation (found on the board's Arduino Store page ... Out Serial sample sketch. The second way to periodically change ...

and a software creation environment (Arduino IDE) that makes it easy for you to create programs (called sketches) that can interact with the physical world. The Arduino environment has been designed ...