Claw Machine

We decided to make a low-buget Claw machine.

Supplies

12” T-Slots

1x1 24” Metal Tubing

1x1 12” Metal Tubing 

14” T-Slots 

1/4 x 14 x 24 polycarbonate sheet 

1/4 x 14 x 14 polycarbonate sheet 

1/4-20 x 1 1/2 hex bolts

1/4-20 nuts

Zip ties

super glue

Claw 

Arduino Uno REV3

Breadboard

DC Motors 

pushbuttons

jumper wires

3D prints:

T-slots slider x 3

Prize pit

Gear Chain x 2

• Gear Chain
• Sprocket
• Chain Link

Motor mounts

Motor

Motor mod

Claw Pulley

Claw Pulley Holder

Spacers

A cube that will go into the Metal tubing x8

Step 1: Print the 3D-Prints

• Print all the needed prints
• This can be found on the onshape document

Step 2: Cut Square Out of Polycarbonate Sheet

• Cut a 3.5 x 5 square out of the 1/4 x 14 x 24 polycarbonate sheet 
• Use the onshape document as a reference

Step 3: Make Holes in the Metal Tubing & Polycarbonate Sheets

• Drill holes into the 1/4 x 14 x 24 polycarbonate sheets as shown in the onshape document with a 1/4 drill bit
• Put in the 1/4-20 x 1 1/2 hex bolts
• Screw the bolts with 1/4-20 nuts

Step 4: Attach Prize Pit

• Super Glue the prize pit onto one of the metal tubing
• Use the onshape document as reference

Step 5: The Frame

• Place the print from the part studio named "between"
• Put them on both sides of all of the 1x1 24” Metal tubing
• Place the T-Slot slider on the all the Aluminium t-slots
• Thread the ends of the T-slots with a 1/4 bits about a inch in.
• Drill 1/4" holes on the metal tubing as show in the onshape document
• Screw in the 1/4 bolts accordingly
• Use the Onshape documents as reference

Step 6: Attach Gear Chain

• Drill holes for motor mounting clip
• make sure that the sprocket is leveled with the other one
• Attach motor onto motor mounting clip
• Repeat on both sides

Step 7: Put Code in Arduino

Upload the code below into an Arduino Uno REV3:

#include "CytronMotorDriver.h" // must be downloaded from the Arduino Library

const int button1pin = 2;

const int button2pin = 4;

CytronMD motorOne(PWM_DIR, 9, 8);

CytronMD motorTwo(PWM_DIR, 11, 13); //Left Motor in my example Sumobot

int state1;

int state2;

void setup (){

pinMode (button1pin, INPUT_PULLUP);

pinMode (button2pin, INPUT_PULLUP);

}

void loop(){

state1 = digitalRead(button1pin);

state2 = digitalRead(button2pin);

if(state1 == LOW){

motorOne.setSpeed(255);

motorTwo.setSpeed(255);

}

if(state2 == LOW){

motorOne.setSpeed(-255);

motorTwo.setSpeed(-255);

}

else{

motorOne.setSpeed(0);

motorTwo.setSpeed(0);

}

}

Step 8: Wiring Up the Electronics

Use the pictures above to set up your electronics