Parts List / Cost

• 3 water bottle (0€)
• tape (0,50€)
• hot glue (5€)
• pieces of wood (0€)
• silicon (2,5€)
• 2 led high brightness (2€)
• 2 Servo Motors (7€)
• gear for servo (1€)
• DC motor + propeller (17€)
• Plastic bowls (4€)
• saucer (0€ stolen at morther)
• nails and other metal parts (2€)
• arduinoBT (100€)
• Android phone (anything Android like HTC dream or LG Linkme or HTC Desire that I used)

Globally 141€