BB-R2 (Baby R2)

One of the most fun parts of the build was developing the mobile interface using Synthiam by ARC.  The first thing I did was to create the backdrop for control screen in which I would put all of the controls on top of.  Here is the backdrop I developed:

Next I used the interface builder to add the controls on top of the background:

There are many R2-D2 sounds available to download on the Internet.   I brought several of them into the build.   The joystick of course controls the movement of R2.  The dome rotates left or right with the arrows on either side of R2' head.  The dome will stop rotating by pressing the Radar Eye in the middle of the head.    I posted this app as public and called it "BB-R2". .

Michael has provided a great set of instructions to build the robot as well including the parts list and STL files.   He normally uses RC controls, but I chose EZ-Robot approach.  For the build, I used the I/O Tiny, a 7.4V 1000mah LIPO, and a speaker that I took from some broken radio.  I used three continuous rotation FS90R servos.  Because the maximum voltage for the servos is only 5V and I am powering the IO Tiny with a 7.4V battery, for each servo connection I used a Servo Voltage Regulator for each channel.