John Nicholson' STEM Class

Robotics (SPIKE)

3-D Printing a Lego Arm for EV3

Recommended Thingiverse.com 3-D Printable File for your RAT (rock abrasion tool) motorized arm

8mm Lego Mindstorms Bushing by: mikitz

LEGO Servo Hub by: FTCTeam3540-Roboboogie

https://www.thingiverse.com/thing:4787943 by: BorgerMan

LEGO 31313, 45560,45544 Mindstorms EV3 by: zRattlheadz

(variety of parts to choose from)

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