But we can’t deny this Arduino calculator project by [Danko Bertović] would ... It also helps that the whole thing is put together on perfboard with jumper wires; no PCB fabrication required ...

All you’ve got to do is provide it with a suitable control interface, which [Ricardo Lima Caratti] has done with his recent project. Using an Arduino ... on a piece of perfboard.

With me so far? Here is a list of projects that you can do with an Arduino that are fun, relatively easy, and incredibly ...