This is a simple schematic on how to create an Arduino on a breadboard and connect it via a CP2102 TTL UART Serial Converter Module. Download the Fritzing file if you want to re-use or change this ...

This is the code and sketches ... and you can also open the fritzing_final_sketch.fzz file with the Fritzing Software if you want to modify the final sketch to your own needs. The downloaded libraries ...