This is a simple work to get started with arduino programming. It's an online calculator that makes operation between operand, using a keypad (4*4) and an lcd1602.

I'm thinking of setting this up on a common 3D printer platform (Arduino Mega 2560 + RAMPS 1.4 + LCD w/ SD card reader), and I'd like to make it run standalone (like Marlin does). So, I figure I'm ...

Makers and developers that enjoy creating projects using the Arduino platform may be interested in a new shield for Arduino that incorporates an LCD JEMshield++, keypad and enclosure all in one ...