living with the lab

Attaching Arduino to Boe-Bot Chassis

© 2012 David Hall

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The content of this presentation is for informational purposes only and is intended only for students attending Louisiana Tech University.

The author of this information does not make any claims as to the validity or accuracy of the information or methods presented.

Any procedures demonstrated here are potentially dangerous and could result in injury or damage.

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(instructor will provide aluminum plate and switches)

Parts• Boe-Bot parts kit• Arduino board• Two switches• 4” x 6” aluminum plate

(1/16” thick)

required parts

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hole locations to match

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(turn chassis over and mark holes)

align back of robot with edge of plate

leave the same gap on both sides

the plate should extend beyond the front of the robot; this is where you will mount the switches

hole locations to match

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Arduino mounting holes to mark

leave small gapto provide clearancebetween outer hole and edge

hole locations to match

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hole locations to match

leave small gap to provide clearance between holes and edges

(mark hole locations with slender object through switch holes)

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safety first . . .

you must wear safety glasses!!!

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punch 1/8” diameter holes(you should be able to punch all holes)

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making holes in sheet metal

• Punching holes in sheet metal is better and safer than drilling.• Drilling sheet metal can be dangerous when the drill bit diameter is greater than

the sheet thickness; the workpiece and drill will be pulled toward one another when the helical web of the drill bit breaks through during drilling.

• When the drill bit breaks through, it will tend to grab and rotate the workpiece, potentially pulling it out of the vise. If this happens, the edges of the spinning workpiece will act like a rotating knife. NEVER hold sheet metal in your hand while drilling!!

• You are not authorized to drill holes in sheet metal in the ENGR 12X sequence.

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assemble parts(mount plate to chassis . . . then Arduino to plate)

put white, nylon washers on top of aluminum screw posts to prevent unwanted grounding of solder bumps on bottom of Arduino circuit board

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engrave your name on robot(don’t risk losing your most valuable possession)

use an engraving tool, or scratch your name into the “soft” aluminum sheet

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assemble the rest of the robot(visit www.parallax.com and look at documentation for item 28124; instructions are provided in the “Robotics with the Boe-Bot” guide)

1. think about which screws will be covered up during assembly; install these first2. get your screws good and tight; no rickety robots 3. using two screws on opposite corners of servos is OK if they are tight enough