Electric Drive Add-on for Gatling Rubber Band Gun
thingiverse
This upgrade uses a stepper motor to provide an electric drive for the Gatling Rubber Band Gun (http://www.thingiverse.com/thing:647475). Remove the crank arm from the original Gatling Rubber Band Gun and secure this add-on to the Rear Body using zip ties. Requires a bit of electronics and soldering, as detailed in the instructions below: https://www.youtube.com/watch?v=FMEkEvbr3Qs Instructions Design files created in FreeCAD (fcstd file included) and printed in PLA using Cura. Electronic components laid out using DIY Layout Creator. Print individual component STL files, refer to the image for assembly. For increased speed with reduced torque, use v2 gears. In addition to 3D prints, you will need: * A stepper motor (I'm using ASTROSYN Y129, http://sg.element14.com/astrosyn/y129/stepper-motor-1-8deg-12v/dp/9598642) * Atmel ATtiny13 Microcontroller (one piece) * 7805 Voltage Regulator (one piece) * BS170 MOSFET (four pieces) * Terminal blocks (six-way) like http://sg.element14.com/camdenboss/ctb3051-2bk/terminal-block-wire-to-brd-2pos/dp/3882615?ost=3882615 * On/Off switch like this one: http://sg.element14.com/multicomp/1ms4t1b1m1re/switch-spdt/dp/9473467 * Stripboard / PCB board * Battery Holder for 8 batteries * Wires and Zip tie/Cable tie
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