This is just a simple program I wrote for an Arduino Mega 2560 board with a generic ultra-sonic sensor and a 16x2 LCD display board. The main point for me is just to learn how to write C++ and gain ...

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 ...