So I have two problems
QuoteSo I have two problemsYou have one problem: you bought something you don't know how to use.Electronics stuff without a datasheet is no different from a paper weight.
This is why I'm asking for your help.
You could try to reverse-engineer it. There's a couple of IC's on the pcb. Start by making some pictures and writing down the typenumbers of the chips.You could then see if these are commonly used parts and get their datasheets. It's quite a challenge sometimes though..
QuoteThis is why I'm asking for your help.If you have lots of time, try to trace the pcb and get a schematic out of it.Otherwise, write off your losses and start all over again.
can we control such a display with an arduino board?