Quantity   Component name
1 × Arduino Nano
1 × Conductive rubber stretch sensor https://www.adafruit.com/products/519
1 × Protoboard http://www.amazon.com/Vktech-Double-Side-Prototype-Universal-Printed/dp/B00COGNWXA
1 × Wire
8 × Screws
1 × Washers
1 × Steel pendulum Leftover hammerhead stock.
1 × Delrin frame Laser cut.