Wire the Robot Motor and On/Off Switch. To wire the robot motor and on/off switch, I performed the following steps: • Cut the wires on the JST connector to 40mm in length, then stripped and tinned the ends. • Soldered the black wire from the JST connector to the motor "-" terminal. • Soldered the red wire from the JST connector to one of the outside switch terminal. • Soldered a red wire from the center pin of the switch to the motor "+" terminal. After wiring, I connected the JST connector the battery and operated the switch to turn the motor on and off. Assemble the Base. To assemble the base, I performed the following steps: • Pressed the gear motor into "Base.stl" such that the motor shaft was 3mm above the motor gear plate. • Pressed "Gear, Crown, Motor.stl" onto the motor shaft. • Positioned "Gear, Crown, Axle.stl" inside the base assembly over the smaller axle hole. • Slid the longer hexagonal shaft of "Axle.stl" into the base assembly larger axle hole. • Pressed the longer hexagonal axle shaft through the axle gear and out the smaller axle hole in the base assembly. • Pressed one "Cam.stl" onto the axle and rotated the gear train such that the cam was at its upper most position. • Pressed the remaining "Cam.stl" onto the other end of the axle such that the cam was at its lower most position (180 degrees from the first cam). • Slid one "Leg.stl" into the base assembly and positioned the cam ring over the cam, then secured in place with one "Axle, Leg.stl". • Slid the remaining "Leg.stl" into the base assembly and positioned the cam ring over the cam, then secured in place with the remaining "Axle, Leg.stl". • Positioned "Seesaw.stl" over the upper threaded hole on the base assembly then secured in place with "Axle, Seesaw.stl". • Pressed the battery connector between the robot foot and motor housing on the base assembly then secured the battery to the base assembly using double sided tape. At this point, I connected the motor to a power supply in order to test the assembly. I lubricated and operated the assembly and noted the power consumption to be 18 to 20ma. Final Assembly. For final assembly, I performed the following steps: • Rotated the gear train until the seesaw was horizontal. • Positioned "Ultimaker Robot, Front.stl" (or "Ultimaker Robot, Front.3mf") over the lower threaded hole on the front of the base assembly, making sure the gear teeth on the robot front engaged with the gear teeth on the seesaw, then secured in place with one "Axle, Body.stl". • Positioned "Ultimaker Robot, Rear.stl" over the lower threaded hole on the rear of the base assembly then secured in place with the remaining "Axle, Body.stl". • Secured the body halves together using either one small dot of cyanoacrylate glue or small strips of double sided tape. • Secured the switch to the inside of the foot using either one small dot of cyanoacrylate glue or a small strip of double sided tape. And that is how I printed and assembled Ultimaker Robot "Pin Walker". I hope you enjoyed it!