Thankfully, the Arduino board is one of the most popular ... you can use to build and test out your Arduino circuits. This ...

[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.

Microcontroller demo boards such as the Arduino ... then onto the communication circuit, and finally the lights. The video below shows a fully-functional Arduino happily running the blink program.