Caterpillar Robot with SMA muscle wires

The caterpillar robot is driven by two artificial muscles made of SMA (shape memory alloy) .SMA changes its length when electric current is applied .MaterialsSMA (Bio Metal Helix).Rubber sheet . Straw . Batteries (1.3V 2pieces) .Battery case .Cables / wires .Button switches .Wire .Heat shrinkable sleeve .Pins .Tools and EquipmentsScissors .Stapler .Ruler .Breadboard .Crimp terminal .Tape measure .Nipper .Pliers .Tweezers .Soldering iron .