This is fully functional adaptation of the remarkable Memory Orb for 3D printing. The original build thread can be found on therpf.com. www.therpf.com/showthread.php?t=289943. Please find details there. video: www.youtube.com/watch?v=MpHZvnaVrHk Adafruit: Lithium Ion Cylindrical Battery - 3.7v 2200mAh PowerBoost 1000 Charger - Rechargeable 5V Lipo USB USB Micro-B Breakout Board 5x DFRobot Micro DC Geared Motor 6V 96RPM 3x Micro DPDT switches