consigli per robot con arduino

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sono nuovo del forum è vorrei chiedere dei consigli su cosa mi serve per costruire un robot simile questo http://www.youtube.com/watch?v=efb_b0qqksg&feature=player_embedded possiedo ho già il motore (dc 3 volt)  il sensore (sharp)e l' alimentazione esterna ho intenzione di comprare un ponte h avete un modello da consigliarmi ? ma soprattutto avrò bisogno di condensatori?
scusate per il terzo grado ma sono nel panico :smiley-eek:



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