Engineering Concepts

Rolling Robot Project

Project Brief

Automation Project

In this project we're going to learn about robotics and what they mean in this world.

Project Plan

In the end of this project I will have a moving robot that I created and I can move by coding.

Servo back and fourth on TinkerCAD

Today we practiced wiring a servo using TinkerCAD, and learned where to find where the starter code is.

Code for servo back and fourth

/* Sweep

by BARRAGAN <http://barraganstudio.com>

This example code is in the public domain.

modified 8 Nov 2013

by Scott Fitzgerald

http://www.arduino.cc/en/Tutorial/Sweep

#include <Servo.h>

Servo myservo; // create servo object to control a servo

// twelve servo objects can be created on most boards

int pos = 0; // variable to store the servo position

void setup() {

myservo.attach(9); // attaches the servo on pin 9 to the servo object

}

void loop() {

for (pos = 0; pos <= 180; pos += 1) { // goes from 0 degrees to 180 degrees

// in steps of 1 degree

myservo.write(pos); // tell servo to go to position in variable 'pos'

delay(15); // waits 15ms for the servo to reach the position

}

for (pos = 180; pos >= 0; pos -= 1) { // goes from 180 degrees to 0 degrees

myservo.write(pos); // tell servo to go to position in variable 'pos'

delay(15); // waits 15ms for the servo to reach the position

}

Servo back and forth

This class we wired up the servo to the arduino and we already knew how to code and wire it because of TinkerCAD.

Two servos back and forth

Today I learned to make both servos move at the same time; you have to plug them into the same pin number except for GND you can to put one into the other GND pin.

Two independent servos

Today we learned that to do independent servos you have to code two different number pins for each servo and name them differently. Then you have to plug them into the certain number pin.

Code for two independent servos

/* Sweep

by BARRAGAN <http://barraganstudio.com>

This example code is in the public domain.

modified 8 Nov 2013

by Scott Fitzgerald

http://www.arduino.cc/en/Tutorial/Sweep

#include <Servo.h> // this refers to a "library" that knows how to control servos

Servo firstservo; // defines a "servo" object and names it "firstservo"

Servo secondservo; // defines a "servo" object and names it "secondservo"

//int pos = 0; // variable to store the servo position

void setup() {

firstservo.attach(9); // attach the "servo" object named "myservo" to pin 9

secondservo.attach(10); // attach the "servo" object named "myservo" to pin 10

}

void loop() {

firstservo.write(0); //make the "servo" object named "firstservo" rotate at full speed counterclockwise

secondservo.write(180); //in order to make the servo go clockwise at full speed, use "180" as the number

delay(500);

firstservo.write(90); //make the "servo" object named "firstservo" rotate at full speed counterclockwise

secondservo.write(90); //in order to make the servo go clockwise at full speed, use "180" as the number

delay(500);

}

Servos powered by batteries

Today we learned how to move a servo with batteries only. We wired through TinkerCAD then we did it in real life. I learned that black goes in the negative and red goes to positive on the breadboard.

This is my TinkerCAD circuit diagram that we wired today.

Stable prototype

Today we worked on our prototype and built out of cardboard. My robot has the servos, batteries, and an extra wheel for balance under the cardboard.

Foward, backwards, left, right

We started to work on our foward, backwards, left, and right code by improvising on our two independent servo code.

Code for forward, backward, left, right

/* Sweep

by BARRAGAN <http://barraganstudio.com>

This example code is in the public domain.

modified 8 Nov 2013

by Scott Fitzgerald

http://www.arduino.cc/en/Tutorial/Sweep

#include <Servo.h> // this refers to a "library" that knows how to control servos

Servo leftservo; // defines a "servo" object and names it "firstservo"

Servo rightservo; // defines a "servo" object and names it "secondservo"

//int pos = 0; // variable to store the servo position

void setup() {

leftservo.attach(9); // attach the "servo" object named "myservo" to pin 9

rightservo.attach(10); // attach the "servo" object named "myservo" to pin 10

}

void loop() {

leftservo.write(180); //make the "servo" object named "firstservo" rotate at full speed clockwise

rightservo.write(180); //in order to make the servo go clockwise at full speed, use "180" as the number

delay(1000);

leftservo.write(0); //make the "servo" object named "secondservo" rotate at full speed counterclockwise

rightservo.write(0); //in order to make the servo go clockwise at full speed, use "180" as the number

delay(1000);

leftservo.write(0); //make the "servo" object named "firstservo" rotate at full speed counterclockwise

rightservo.write(180); //in order to make the servo go clockwise at full speed, use "180" as the number

delay(1000);

leftservo.write(180); //make the "servo" object named "firstservo" rotate at full speed clockwise

rightservo.write(0); //in order to make the servo go clockwise at full speed, use "180" as the number

delay(1000);

// leftservo.write(90); //make the "servo" object named "firstservo" rotate at full speed counterclockwise

// rightservo.write(90); //in order to make the servo go clockwise at full speed, use "180" as the number

// delay(5000);

}

Prototype track

This is my robot going through the track with a code that I uploaded.

Void forward

/* Sweep

by BARRAGAN <http://barraganstudio.com>

This example code is in the public domain.

modified 8 Nov 2013

by Scott Fitzgerald

http://www.arduino.cc/en/Tutorial/Sweep

#include <Servo.h> // this refers to a "library" that knows how to control servos

Servo leftservo; // defines a "servo" object and names it "firstservo"

Servo rightservo; // defines a "servo" object and names it "secondservo"

//int pos = 0; // variable to store the servo position

void setup() {

leftservo.attach(9); // attach the "servo" object named "myservo" to pin 9

rightservo.attach(10); // attach the "servo" object named "myservo" to pin 10

}

void forward() {

leftservo.write(180);

rightservo.write(180);

delay(2000);

}

void backwards () {

leftservo.write(0);

rightservo.write(0);

delay(1000);

}

void left() {

leftservo.write(0);

rightservo.write(180);

delay(1000);

}

void right() {

leftservo.write(180);

rightservo.write(0);

delay(1000);

}

Ultrasonic Sensor

The wiring was kind of difficult because it was different from the servo wiring. This is my ultrasonic sensor working in the serial monitor.

Avoid walls

Avoiding walls

This is my robot avoiding walls, and we did this by using our void code. When we had the void code we added an ultrasonic sensor to code, and wire.

6241e90bce1644e08c5b7535caa31ace.MOV

Bluetooth control

We used dabble for the controls and we combined the code from forward, back, right to the dabble code.

Redesign of robot body

I wanted the front to look like this because I like the style and how it's three sides instead of just two. I put the wheels in the back and one in the front because it wasn't going to be balanced.

Testing of robot

At first the backside of my robot was higher than the front, so the front was being dragged. After I fixed the balance on my robot, only one of my servos were working so I had to fix the wiring on the breadboard.

IMG_4735.MOV

LED Brightness Control

In Arduino we had to download Dabble so we could have the code for the LED bluetooth.

Bluetooth Race

After we connected our robot to our Dabble app, we had to traverse a path. We got bonus points for hitting the wall less than 6 times and by doing clockwise 360s and counterclockwise 360s.

For this project we are going to use and learn about different power tools.

Table Saw

When using the table saw you need to wear safety goggles, no loose clothing, if you need to move anything use a push stick. Do not operate with gloves on , leave it plugged in, don't leave without vacuuming.

We made

Today we used the table saw to cut 2x4 into flat boards for our box

Planner

Removes material from the top of the material to perform. Reduce thickness, makes the material a uniform material, and make it smooth. You have to wear safety protection, don't put fingers near the opening.

What we made

We put our 2x4 boards into the planner to make it skinnier

Miter saw

Secure material with your hand outside of the hand placement line, don't move the the blade guard, plug in saw the cord across body.

What we made

We measured before we cut at the lines we made.

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