One of the great things about Arduino is that it makes creating with electronics really accessible. Finding the right circuits and code however can still be a struggle, so I've made a free webapp to help with this.
The idea is that you just click which inputs and outputs you want, you get the circuits corresponding to these circuits with a skeletoncode to use the functions. Also explanation is given, which components to use is adviced with an orderlink and all circuits and code in there is tested with the adviced components.
Check it out for free on www.circuitsmaster.com and let me know what you think!