As an introduction to the Arduino and Johnny-Five, I've started converting the starter kit examples from C to JS.
Project 1: Get To Know Your Tools
Project 2: Spaceship Interface
Project 3: Love-O-Meter
Project 4: Color Mixing Lamp
Project 5: Servo Mood Indicator
Project 6: Light Theremin
Project 7: Keyboard Instrument. Variations: one & two
Project 8: Digital Hourglass
Project 9: Motorised Pinwheel
Project 10: Zoetrope
Project 11: Crystal Ball
Project 12: Knock Lock
Project 13: Touchy Feely Lamp