This tutorial was created by ELECTRONOOBS, and it illustrates how he designed ELECTRONooBINO — his own modified version of the classic Arduino UNO. His design adds a second row of pin headers, SPI port compatibility, a USB Mini B port in place of the standard USB B port, and a couple of aesthetic changes. If you follow the same process, you should be able to add whatever components you want in order to end up with the perfect Arduino for your project.

The AddOhms YouTube channel features this board in a three-part series. It shows how to design a DIY, or standalone, Arduino board. Learn how to draw the schematic, layout the PCB, and finally turn-on the finished board.

Originally, the board was a boring rectangle. Then I remembered an old trick to giving presentations: “Draw a triangle on the board.” You’d be surprised how often it works. In this case, I made some cool boards and an entire video series out of the strange tip.