Engineering Concepts | 11th Grade

Servo back and forth in Tinkercad

Today we learned how to wire a servo, and where to find the code to control a servo.

2021-07-30 09-36-05.mkv

Two Servos Moving To & Fro

We've uploaded the code in order to get two servos operating properly using the Arduino IDE. Powered through the Computer USB port.

PXL_20210802_130901108.mp4

Code for Tinker Servo - To & Fro

/* 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

}

Tinkercad Circuit Diagram

//The Tinkercad circuit diagram is a visual model of what we //did physically that we can refer back to.

#include <Servo.h>

Servo hidari;

Servo migi;

void setup() {

// eugh eugh eugh

hidari.attach(9);

migi.attach(8);

}

void loop() {

// welcome, player, euuuuugh duude

hidari.write(0); //susumu | up

migi.write(0);

delay(2000);

// hidari.write(90); //chuushi |stop

// migi.write(90);

// delay(2000);

hidari.write(180); // ushiro he | back

migi.write(180);

delay(2000);

hidari.write(180); //hidari he | left

migi.write(0);

delay(1300);

hidari.write(0); //migi he | right

migi.write(180);

delay(1300);

}

//// * DATA / GATHERED INFORMATION

2000 ms / 1 Foot

Two Independently Functioning Battery Powered Servos In Stable Prototype Body

We learned how to make two separate Servo objects in the Arduino IDE in order to allow them to function on different variables for movement.
We've learned how to power the Arduino with batteries rather than the computer as the power source.
I built a functional cardboard prototype around the battery-powered Servos and Arduino.

PXL_20210811_124409730.mp4

Forwards! Backwards! Left! Right!

We've experimented gaining further knowledge of programming the robot prototype's movement with the fundamentals of code. In doing so, the robot is able to go, "Forwards, Backwards, Left, & Right".

PXL_20210813_124754830.mp4

Movement Functions

#include <Servo.h>

Servo hidari;

Servo migi;

void f(int a){

hidari.write(0); //susumu | up

migi.write(0);

delay(a);

}

void b(int a) {

hidari.write(180); // ushiro he | back

migi.write(180);

delay(a);

}

void l(int a) {

hidari.write(180); //hidari he | left

migi.write(0);

delay(a);

}

void r(int a) {

hidari.write(0); //migi he | right

migi.write(180);

delay(a);

}

void s(int a) {

hidari.write(90); //chuushi |stop

migi.write(90);

delay(a);

}

void setup() {

// eugh eugh eugh

hidari.attach(9);

migi.attach(8);

}

void loop() {

// welcome, player, euuuuugh duude

f(4600); //#1

r(900);

f(5200); //#2

r(850);

f(3300); // #3

r(830);

f(1800); // #4

l(830);

f(7000);

l(830);

f(3000);

s(1500);

}

//// * DATA / GATHERED INFORMATION

//2000 ms / 1 Foot

PXL_20211018_131352570.mp4

Testing of Robot Body

My robot stands stably, moves in the proper directions when directed to, & makes fairly clean turns.

Redesign Robot Body for Functionality / Aesthetics

I reassembled my robot to allow for the whole of the direction of the robot's movement to rely on the frontal wheels, which operate on a positional micro servo. After ensuring a stable balance, I went on to had design features that make the robot take the form of a dog. It has the US Sensor for eyes, a snout, ears, & a tail in the back (not visible in current photo).

WIN_20211018_08_35_06_Pro.mp4

Implement Bluetooth Control

Using the dabble app & its library's template Gamepad code, I am able to control my robot's movement with my phone. The Bluetooth module reads a direction statement sent by my phone, & runs a function accordingly.

PXL_20210830_122200362.mp4

Working Ultrasonic Sensor

We coded the sensors to actively log the distance of what's in front of it.

WIN_20211018_08_59_54_Pro.mp4

Robot Misses Walls

I coded my robot to automatically turn either left or right if a wall is in mid-distance.

Table Saw

DO's

[Wear safety glasses, remove loose clothing, use either the rip fence or the miter gauge, use the feather board, rip cuts with fence, cross cuts with miter gauge, use a push stick]

DON'T's

[Put your finger within 6" of the blade when it is moving, cross cut with rip fence, stand right in front of the blade, operate with gloves on, leave it plugged in]

Planer

DO's

[Wear ear protection & safety goggles, adjust the cutting thickness to within 1/16" of the material thickness prior to cutting, unplug when finished, attach the vacuum before use]

DON'T's

[Put fingers near the opening, pass any material but wood through the planer, pass wood with nail screws through the planer]

Miter Saw

Cross Cut: cuts across the length of the wood.

1.) Also cuts at angles.

[Wear safety glasses, firmly secure the material with your hand outside of the hand placement line up against the fence, vacuum after use, unplug the saw(in the classroom) after use, reduce exposure to blade]

DON'T

[Touch or manually move the blade guard, cut material that requires your hand to be inside of the hand placement line (material is too short for this application), plug in the saw with the cord across the body, measure while material is on the saw]

Biscuit Jointer

DO's

[wear safety goggles, make sure it is set for the appropriate size of biscuit, make sure you set the heightin the middle of the material, mark both sides of the material, clamp a block in front of the material each time]

DON'T's

[put your fingers near the blade when it is plugged in, assume the blade won't come out of the material]

Computer Numerical Control Machine (CNC) Software

VCARVE PRO is used to develop designs for cutting/engraving.

DO's

[run the dust collector, vacuum after use, wear ear protection, wear safety goggles, secure your material (with screws or clamps), design around your screws]

DONT's

[leave the CNC while it is running, go near the gantry while it is running]

Lockbox

Project Brief

Constraints & plan for our lockboxes that we will build in class.

A roadmap of our lockbox development process.

A list of tools supplied in our classroom for our use to build the lockboxes.

Navigating Onshape Checklist

We went through a course to initiate our Onshape learning experience by becoming acquainted with the basics of navigating their website & software.

Introduction to Sketching

Following learning how to work our way around the website, we learned the fundamentals of using the actual software. Going on to create our first Onshape document with a Basic Sketching Exercise.

Basic Sketching Exercise

After going through the Onshape fundamentals, we created our first basic sketch to prove our retention of the information.

Lock Research

RFID

Programmed through the Arduino, the RFID Module scans the card necessary to trigger the lock function, which is a servo maneuvering the lock mechanism.

As Ms. White will not provide RFID modules, it is not feasible to make, unless by self-initiative to purchase a module.

Does it meet the constraints of this project?

Yes.

Padlock

Padlocks are a mechanical lock that uses an internal pin tumbler lock to release spring tension & push out the shackle which can then be reinserted to relock the padlock.

I'm not sure if we have springs & such to make this happen.

Does it meet the constraints of this project?

Yes

Pin Tumbler Lock

When the proper key is inserted, it elevates metal pins inside the mechanism to all be at the same level where they can turn & open the lock.

I'm not sure if we have springs & such to make this happen.

Yes.

Keypad Lock (Arduino)

By programming the keypad operations into an Arduino circuit board, when the proper key combination is entered a specified function (particularly access to something secure) is invoked.

Keypads will not be supplied by our teacher.

Does it meet the constraints of this project?

It can, depending on how the lock mechanism that is triggered by the keypad is designed.

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