This is my first post on this forum, first I'd like to say this is a great forum for noobs like me in Arduino
I have an unused Android Smartphone (Sony Ericcson Xperia Mini pro), and I'd like to know if it is possible to use that phone as a bluetooth receiver, connect it to the Arduino (I have a Uno, but plan on using a standalone Atmega328 for my project) via USB OTG, and send Serial data from that phone?
In other words:
My Android Phone sending BT order==BT==>Old Android phone serving as BT receiver===USB OTG-Serial com===>Arduino
It has been pretty hard to get across this. This is probably because it is so easy to get a result with a $7 bluetooth module, using a phone instead isn't worth the effort - no matter how much you didn't pay for it. You don't just cable connect to the Uno, you need a USB host shield. Once you sort that out, I think it is more of an Android problem than an Arduino problem.
Ok, thanks for your answer, I'll have a look at the links you provided.
I suspected there was no easy answer to this one, and I agree that simply buying a BT adapter will be much easier, but that was more for the fun of using an old phone than anything else...I don't even think that that would be a practical solution to any project.
I appreciate what you say. I only got in to this because I wanted to salvage a (new) tablet that was giving me bluetooth grief. I never pursued it as I eventually got the tablet to run bluetooth.
I believe there are better things that you can do than a bluetooth tether anyway. It can serve as an Arduino display to die for. The 10" tablet is running Bluetooth Graphics Terminal, displaying three graphs and, so long as the charger is connected, it never goes to sleep. The phone can probably do the same thing.
