A slightly different B9 Robot
Bluetooth sound interface
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RoboPhone
Bluetooth to your Robot

One way to get sound to come out of your Robot is Bluetooth. There are now Bluetooth devices available that can transmit and receive reasonable quality sound, much better then that found in those silly in the ear Bluetooth headphones.

 

These new devices have a Bluetooth A2PD profile: http://www.a2dp.info/Headset-Reviews/

 
In principle this is very simple: have sound files on a device like a phone or PDA or computer and play them over the Bluetooth wireless link to a Bluetooth speaker inside the Robot.
 
But it’s not that simple. These speakers have to be supplied with power, and their audio signal has to be directed to what ever is being used as a Neon sound interface. 
 
I got a Sony-Ericsson MBS-100 and cracked it (literally) open:

robot001.jpg

Unfortunately this speaker has an on/off button that was not easy to interface to the remote control system I am using. The button (along with the pairing button) is on an extra circuit board that will have to be accessable.
 
Wires were hooked up to the power connection and the speaker, simple but tedious.
 
The circuit board and half the remains of the housing were mounted so they could be reached thru a torso vent.

bt_connection.jpg

At the moment the sound files are all in a phone, a Sony Ericsson w580i, that has the A2DP profile. Very easy like this. There are also Bluetooth streaming devices that just plug into the audio jack of your computer or PDA.
 
To make a sound come out of the Robot just play the sound file in the phone (or what ever) and it comes out at the Robot. This works very well except for the limited range of the Bluetooth system, 30 ft really is the max.

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