user11385: I need two Arduino units with the HC-06 Bluetooth board to communicate with each other and one of these Arduino units also connected to my Android phone. Is this possible to do with just two HC-06 modules, or even three? Or is there a better solution for this?
To reiterate what is going on here:
I have two Arduinos that are running off battery. Arduino 1 is sending data every 0.5 seconds to the Arduino 2. Arduino 2 collects this, adds its own bit of data to it, and then sends this new data packet to my Android phone which will only be connected to Arduino 2.
I haven't completely decided upon what kind of Arduino board to get, but it needs to be fairly small, but I am planning on the Adafruit Pro-Trinket 5v.
Hopefully you get the basic scenario, let me know if you need more clarification and what you think could be done here.
Thanks a lot! 

user23788: Should be possible, but only if you setup the Bluetooth module of Arduino 2 as the master. You see, Bluetooth requires to connect to a master. A master can connect to 8 slaves in total. Because Arduino 2 connects to multiple devices (Arduino 1 and your Android device) it should be the master. This also means your Android device cannot connect to any other devices.
Hope this gives you a place to start exploring.

11385: <p>I need two Arduino units with the HC-06 Bluetooth board to communicate with each other and one of these Arduino units also connected to my Android phone. Is this possible to do with just two HC-06 modules, or even three? Or is there a better solution for this?</p>

<p>To reiterate what is going on here:
I have two Arduinos that are running off battery. Arduino 1 is sending data every 0.5 seconds to the Arduino 2. Arduino 2 collects this, adds its own bit of data to it, and then sends this new data packet to my Android phone which will only be connected to Arduino 2.</p>

<p>I haven't completely decided upon what kind of Arduino board to get, but it needs to be fairly small, but I am planning on the Adafruit Pro-Trinket 5v.</p>

<p>Hopefully you get the basic scenario, let me know if you need more clarification and what you think could be done here.</p>

<p>Thanks a lot! </p>
 23788: <p>Should be possible, but only if you setup the Bluetooth module of Arduino 2 as the master. You see, Bluetooth requires to connect to a master. A master can connect to 8 slaves in total. Because Arduino 2 connects to multiple devices (Arduino 1 and your Android device) it should be the master. This also means your Android device cannot connect to any other devices.</p>

<p>Hope this gives you a place to start exploring.</p>
