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We have an external device (it's not android) that we usually connect to PCs via Serial Port->USB converter. But now we want to use also Android tablets to send commands to that external device so we are going to add a bluetooth module that can act as a bridge between the device's Serial Port and Android tablets.


Should we buy a slave bluetooth module or a master one?
The external device is like a "server" that is always working, and the PC/tablet just connects and sends commands to it.

Master means "server" or "client"? It's a bit confusing cause the Android doc uses "server/client" terminology while hardware stores use "master/slave".

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As almost all of the "master" BT modules can work also as slave (there are "master/slave" and "slave" modules, but not "master" only) I think master means server or host but I'm not 100% sure. –  TheBronx Apr 8 '13 at 7:04

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