I wanted to recreate Arduino Controlled Catapult. But because I had no experience whit Arduino, it was harder than I taught. Also I burnt my 9 volt cable so I needed to improvise how to do the electronic parts.
In the end I could not finish it, but you can see that there is not much left and can see when I wanted to achieve.
to read my process link the link to read my PDF
Muhammed-Budak_ITTT-Instructables_design-document_v1
To see my Instuctables page look here.