Powered by an Arduino Uno, the light painter provides a user interface ... We covered the original Adafruit project that [Reven] based his code all the way back in 2013, though there’s certainly ...

That makes it ideal for applications like robotics or controlling smart blinds that react to light. With me so far? Here is a ...

So in that light, building your own DIY calculator might not seem too exciting. But we can’t deny this Arduino calculator project by [Danko Bertović] would look good sitting on the bench.