Robotics Hardware Primer

See you on:Saturday, February 2, 2013

4:00 PM

PunchRock1800 Wyoming Ave NW

Washington, DC, DC 20009

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Agenda

Instructions for breakout session• Dave will demonstrate (10 minutes)

– 3D printing– Stepper motor control

• Mike will demonstrate (10 minutes)– Connectors – Hardware guide– Sample moving parts rig

• Hands-on breakout session (40 minutes)• Summary of other methods (20 minutes)• Q&A session

Dave will show you:• Sketchup 3D design• STL export• Slicing Gcode• 3D Printing

3D Printing Demo

Dave will show you:• Programming Arduino RAMPS controller• Connecting steppers or servos• Fast serial control with GCODE/terminal

Stepper Motor Control

Mike will show you:• How to tap holes in plastic• Keep the part Flush/Straight• Turn once, turn back half• Continue until cleared• Insert matching screw

Connectors

Mike will show you:• How to make a 3D printed slip fitting• Optimize 3D printing process for tight fit• Press part in• Refine as needed

Connectors

Mike will show you:• A sample robotic assembly • The arm contains makerslide, a strong nearly final

prototype level quality aluminum• Bearing slides on the aluminum• A stepper with MXL pulley and timing belt• Tapped holes inside the aluminum to hold the

balancing pulley

Connectors

Structure

DifficultyCost

Strength/LongevityStage of project

2X3 StudPinewood

MDF Board Lasercut VeneeredParticleboard/3D Printed Part

Metalwork

Makerslide T slotted framing

StructureCosts

DifficultyCost

Strength/LongevityStage of project

$0.30 /ft2X3 StudPinewood

$2 /ftMDF Board

$2/ftLasercut VeneeredParticleboard/3D Part

$2-$10/ftMetalwork

$5/ftMakerslide

$30/ftT slotted framing

StructureCutting methods

DifficultyCost

Strength/LongevityStage of project

Table sawJigsaw

TablesawJigsaw(DON’T BREATHEDUST)

LasercutterCNC mill

Vertical BandsawORMetal cutting wheel

Vertical Bandsaw

Vertical Bandsaw

StructureJoining methods

DifficultyCost

Strength/LongevityStage of project

ScrewsBoltsGlue

ScrewsBoltsGlue

ScrewsBolts

Ceramic puttyBoltsTapping

Ceramic puttyBoltsTapping

BoltsTapping

StructureLongevity

DifficultyCost

Strength/LongevityStage of project

Bends over time/Humidity

Water destroys it

Cracks easily

Connections tend to fail

Does not fail Does not fail

Advanced Manufacturing Methods• Injection molding• Acrylic joining• CNC machining• See the book for

More info!

Connections

• -Slip/tight fit• -Threading• -Threaded rod• -Drill hole + anchor screw• -Bearing (slip, ball bearing)• -Glue and epoxy• -Wire/tension• -Gearing• -Timing belts/pulleys• -Spring• -Flexible shaft coulpler

OPEN Q&A Session

See you on:Saturday, February 2, 2013

4:00 PM

PunchRock1800 Wyoming Ave NW

Washington, DC, DC 20009

David JonesVescarobotics.com

Michael ArmaniArmanicreations.com

Presented By:

See you on:Saturday, February 2, 2013

4:00 PM

PunchRock1800 Wyoming Ave NW

Washington, DC, DC 20009

David JonesVescarobotics.com

Michael ArmaniArmanicreations.com

Sources

• Sources-Mcmaster-Robotshop-Amazon-Pololu-Ebay-Aliexpress-Sparkfun-VXB/lynxmotion-Phidgets.com-econobelt.com

Local-Home depot-Harbor Freight-Do you know of anything local?-Makerspaces?

• Price point examples• Features to look for