So I want to vibrate a tiny vibration motor wirelessly using my computer. I can do this quite easily using an arduino/xbee kind of setup, but I'm wanting to go smaller/lighter/cheaper. The end product will be something that a musician attaches to their ankle to receive haptic feedback. I also want to be able to access/address multiple of these devices (at least 4 total).
Since I'm only using a single pin to control the motor, I'm wondering if it's possible to use an xbee on it's own so I would just have an xbee and a voltage regulator. (The xbee pinout says it has a DOUT pin). It's still a little chunky as it'd be xbee/regulator/battery.
I've seen things like the RFduino, but it's not clear how I would use that using my core software (Max/MSP on a Macbook).
I've also been using an x-OSC (http://x-io.co.uk/x-osc) and love it, but it's not cheap, and not easy to use more than one at once (you need to use a router).
Are there other *duino wireless derivatives? Ideally that have built in power regulation?