This is kind of a rhetorical question, but does the Versalino FTDI adapter have to be installed on the rover for the BT2S to function properly?
I spent a couple hours this morning trying to figure out why when I sent commands to the rover BT2S paired with Android SPP Pro, the rover exhibited strange and somewhat random behavior (I wound send “w” and it would see “F” or “f”). When I had the Versalino FTDI adapter installed and connected to the PC, the bluetooth interface worked as expected. After pondering this behavior I realized the Versalino FTDI probably provides the UART functionality for the Versalino Serial interface. I suspect that since there wasn’t a physical UART to assist with the Serial device, the codes interrupted were different and inconsistent from the ones sent.
I believe this was similar to problems I have had in the past working with the software serial driver.
I thought I would post this here as a question in case others run across the same issue, or if I may be missing something.
The Versalino Uno with a BT2S Slave should be able to received signals directly from a computer or Android phone, but you have to make sure that your baud rate is set up properly at 9600 for the Bluetooth connection.
That said the BT2S is a 3.3 volt device and some have encountered difficulty with communication on the Versalino Uno receive side (transmit from the Versalino Rove always seems to work). We have finished putting together an adapter board that might help, and it is set to be launched later this week.
Anyone who has purchased a Versalino Rove kit and encountered any difficulty sending commands to the Rover is encouraged to let us know so that we can send the adapter board (free of charge) to those who might be effected by the VOH (Voltage on High) change in the recent batch of Atmega Chips.
The problem you are describing may not actually be related to the VOH issue, but I wanted to mention it in case anyone else is having difficulty. I would still like to know a little more about your specific problem though. Maybe you could upload or send a picture of your set up.