Help with an 8 x 2 LCD

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i bought 2 of these (http://www.ebay.ca/itm/271160612814?sspagename=strk:mewnx:it&_trksid=p3984.m1497.l2649) lcds, , need getting them run. have followed arduino liquidcrystal example, nothing shows on lcd. asked ebay seller controller used, got no reply. looking suggestions thing running, because stumped. did try wiring right i2c adapter, didn't work, guessing not hd44780 controller.

if can't running can point me 1 work? need 1 blue backlight , white text. i2c 1 haven't been able find parallel fine.

i'm going touch wiring post picture in while.

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i have followed arduino liquidcrystal example, nothing shows on lcd.

are sure interpreted pin numbers correctly.  pin '1' 1 square outline, pin '2' (typically) directly above pin '1'.  in other words odd numbered pins ones closest display , numbered ones closest edge of board.

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i did try wiring right i2c adapter, didn't work, ...

if interpreted pin numbers incorrectly when connecting directly arduino incorrect when connecting i2c adapter.

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... guessing not hd44780 controller.

i surprised if not hd44780 compatible.

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i'm going touch wiring post picture in while.

that's idea.  make sure can see both ends of every wire.

don



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