What do you do when your trusty, 45 year old calculator finally needs to be retired? If you’re a programmer with a knack for making things — like Simon Boak — you custom build a replacement. This is ...

Ok, we’ll come clean. [Design Build Destroy] didn’t really add any memory to his Arduino Nano. But he did get about 1.5K more program space when compared to the stock setup. The trick? On some Nano ...

There’s something about Reverse Polish Notation (RPN) and the calculators that use it. It calls to mind a time when a calculator was a serious tool, and not just a throwaway toy. Created in the legacy ...