dinocalc

(Arduino Pro Mini Protoboard Version) Latest Release:  http://code.google.com/p/dinocalc/ Development:      https://github.com/WeaselJones/DinoCalc This is a calculator without a LCD that tells you if your math answer is right or wrong, without giving you the answer.  This instructable will show you how to make this simple math checking calculator using “off-the-shelf” items. [UPDATE:  A TUTORIAL SHOWING HOW TO […]