Trying to make a cleaner look for the controls, I ended up switching to an image sprite on a canvas. The image is a blue dot and the user will move it up/down/left/right to control the claw machine forward/backward/left/right respectively.

To cause the claw pickup routine to initiate, the user will flick the phone.

What would be nice is to add an image of the claw instead of a blue dot, but this will do for now.

Also added to this is the capability to disconnect from the Bluetooth connection and a button to close out the application altogether.