It could be done, but would likely require some modifications to the firmware and hardware to add in support for bluetooth serial comms. I’d have to look at the available arduino bluetooth modules and libraries to determine how extensive the modifications would be. My best guess without research would be that it would require a bluetooth serial comm library, some calls to setup the library, and switching out the serial comm commands to call to the bluetooth serial comm library instead of the standard serial I/O library. Shouldn’t be too difficult. On the hardware end, it would be a matter of whether the necessary pins are easily accessible on the osPID hardware.
Alternatively, if there is a bluetooth module that supports two wire serial comm from the tx/rx pins without needing a library, it would only require gaining access to the serial tx/rx signals on the osPID. That might require a little hardware hacking, as if I remember correctly, the tx/rx signals are not broken out to any accessible pads/pins on the main PCB or I/O cards.
I’ll investigate BT modules and reply again in a bit. I’m currently working on a custom firmware/hardware modification that would allow for dual PID loops, so I have some knowledge of how the whole thing works.
