Chassis and shield
To assemble the chassis with the Zumo Shield, you should use the two-piece acrylic spacer plate
that is included with the shield. You will not need the one-piece mounting plate that is included
with the Zumo chassis.
10. Place an M3 nut in each of the two side slots near the rear of the chassis. The slots are sized so that nuts
will not be able to rotate within them. (These nuts will be used to mount the idler sprockets later.)
11. If you want, peel the protective paper masking off both sides of the acrylic spacer plate pieces (the
spacer plates in our pictures show what they will look like with the masking peeled off). Alternatively, you
can leave the masking on for additional thickness. If you leave the masking on, it will be mostly concealed
when the robot is fully assembled.
12. Cover the chassis and motors with the spacer plate pieces and then the Zumo shield. The holes in the
spacer plate should line up with the through-holes in the shield resting on top of it. There is only one correct
orientation for these plates. (The plate consists of two separate pieces to make it possible to disassemble the
Zumo without having to desolder the motors or battery terminals.)
13. In each of the four mounting holes, insert a #2-56 machine screw through the shield, spacer plate, and
chassis, and tighten it against a nut under the chassis. You can line up the nut by feel, or you could try
temporarily taping the nuts inside the recesses in the chassis. Note that the kit includes two different sizes of
#2-56 machine screws: 1/4″and 5/16″. The two longer screws are intended for use in the front holes (near the
motors) if you are also mounting a sumo blade; otherwise, you can use the shorter 1/4″ screws for all four
mounting holes.
Pololu Zumo Shield for Arduino User's Guide
© 2001–2012 Pololu Corporation
2. Assembly
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