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 16 ...

The complete circuit diagram of this Arduino Calculator Project is given above. The +5V and ground connection shown in the circuit diagram can be obtained from the 5V and ground pin of the Arduino.

Volos Projects educator [Danko Bertović ... [Danko] is no stranger to Hackaday — he has made several Arduino-based calculator projects. Perhaps the most remarkable being the circuit sculpture ...