One of [Kale_3D]’s teachers had made an Arduino-powered calculator ... after the break showing how it works. The code and wiring diagrams are available for download on the project’s ...

This is the SB116, an 8-bit programmer’s calculator powered by an Arduino Nano ... t need “to worry about lithium cells and charging circuits.” When he began working on the design, Boak ...

But not so if you’ve got this beautiful custom RPN calculator in a wooden case ... Next up, a custom PCB to connect the keypad to an Arduino and a 20×4 LCD display was milled up, while a ...