Gophercon 2015 #hackday - demo with Sphere - make it move to keyboard arrow keys.

sphero.go

package main

import (
	"fmt"

	"github.com/hybridgroup/gobot"
	"github.com/hybridgroup/gobot/platforms/keyboard"
	"github.com/hybridgroup/gobot/platforms/sphero"
)

func main() {
	gbot := gobot.NewGobot()

	adaptor := sphero.NewSpheroAdaptor("sphero", "/dev/tty.Sphero-OOP-AMP-SPP")
	driver := sphero.NewSpheroDriver(adaptor, "sphero")
	keys := keyboard.NewKeyboardDriver("keyboard")

	var oldKey int // old key
	var speed uint8 = 30
	work := func() {
		gobot.On(keys.Event("key"), func(data interface{}) {
			key := data.(keyboard.KeyEvent)

			direction := uint16(0)
			switch key.Key {
			case keyboard.ArrowRight:
				direction = 0
			case keyboard.ArrowLeft:
				direction = 180
			case keyboard.ArrowUp:
				direction = 270
			case keyboard.ArrowDown:
				direction = 90
			}
			if oldKey == key.Key {
				speed = speed + 20
				fmt.Println("speed++", speed)
			} else {
				// reset speed
				speed = 30
			}

			driver.Roll(speed, direction)
			// update the key
			oldKey = key.Key
		})
	}

	robot := gobot.NewRobot("sphero",
		[]gobot.Connection{adaptor},
		[]gobot.Device{keys, driver},
		work,
	)

	gbot.AddRobot(robot)

	gbot.Start()
}