Track projet

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hi all, after have made chronometer, fire when item passes on lth 301 32 : http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0cgoqfjaa&url=http%3a%2f%2foptoelectronics.liteon.com%2fko-kr%2fapi%2fdwonloadfilehandler.ashx%3ftxtspecno%3dds-55-96-0005&ei=tzcpt5ucjkoh0qxl--ivba&usg=afqjcneahw_fu0hypgf_-howghrhhnufgw&sig2=1hyjtkervy564_hbpx2okg (sorry long url website)

i make connections nothing happens, have put : - led : resistance 220 ohm, 5v
- phototransistor : resistance 4.7kohm + 5v , output after resistance

i don't know happen, maybe components died ?

thanks lot

i have found solution, don't use digitalread() analogread() , after try change resistance value see what's most


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