[Allan Schwartz] decided to document his experience using Fritzing to design, fabricate, and test a custom Arduino shield PCB, and his step-by-step documentation makes the workflow very clear.

Instead, he fabricated them from a PCB using 0805 LEDs for the segments ... the project is what you’d expect, a 3D-printed case and an Arduino Nano coupled with a DS1307 make the clock part ...

The PCB Direct virtual breadboard has been created to allow anyone to create interactive virtual breadboard circuits for platforms such as Arduino, ARM, PIC, Raspberry Pi and more, with the ...