Quantity   Component name
1 × 3D printed head
1 × 5mW Laser Module emitter - Red Line http://www.seeedstudio.com/depot/5mW-Laser-Module-emitter-Red-Line-p-123.html?cPath=81_86
1 × Slip ring http://www.adafruit.com/products/736
1 × HEF4046B http://www.nxp.com/documents/data_sheet/HEF4046B.pdf
1 × PIC12F683 http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en010115
1 × Bluetooth module http://www.seeedstudio.com/depot/Serial-port-bluetooth-module-MasterSlave-p-572.html
1 × Light detector TSL 252R
1 × Comparator Generic
1 × Hat Stylish top hat
1 × Photo reflective sensor http://www.seeedstudio.com/depot/Photo-Reflective-Sensor-p-543.html?cPath=25_31