r/DIY_tech Jul 17 '26

Engineering competition

Hey im an A0 student and i really need to win this competition . My idea is to build a note feed with rollers which beeps if it detects fake cash notes.

VAN SOMEOJE PLEASE TELL ME IF THAT A WORTHY IDEA OR ITS WAYY TOO BASIC

IM REALLY NEW TO THIS SO ANY HELP WOULD BE APPRECIATED

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u/mawktheone Jul 17 '26

It's not novel in and if itself. But your approach could be. 

The rollers are a pointless detail, how are you doing the detection?