All by itself, a calculator based on an Arduino isn’t necessarily very novel. However, [Danko Bertović] of Volos Projects has a nice board that, of course, looks like a calculator. There are … ...

This DIY Arduino Pocket Computer has ... YouTuber Volos Projects ... we had to make things ourselves no doubt a modern chinese equivalent will be better I still use my 1979 casio fx120 calculator ...

Volos Projects educator [Danko Bertović] had a TTGO ESP32 board looking for a project, ... [Danko] is no stranger to Hackaday — he has made several Arduino-based calculator projects.