I've been having a lot of fun (mostly using other people's instructions) with some of those cheap bluetooth modules (via ebay specials) from China. I'm just getting my feet wet learning the actual 'design' aspects of electronics, however.
I'm wondering how to take full advantage of the CTS and RTS lines on these modules and if anything needs to be done to make them compatible with older devices expecting an RS232c standard. The bluetooth modules seem to conform to the UART standard and voltages (3.3v vs 5v)
I note in the specs they give you, that they use a modified darlington style circuit off the TX line, presumably to hop the 'high' voltage on the TX line up to the 5v that the RS232 side expects. What I'm wondering is if I need to do something similar on the CTS and RTS lines if I wish to use those as well? One of the devices I am trying to connect to claims in it's instructions to use both of these connections.