Source of Motivation

Problem Statement

Traditional scarecrow being a low cost model is widely is used by farmer, but it has less effect because birds after some time get used to it and they don’t have fear any more, and even in the nights when wild animals enter the field they don’t matters a standing mannequin till its make some scaring sound. Also when discussing with farmers about their problem related with farming we know that most of the open farm fields farmers are having threat of Wild Animals being destroying their crop, and its very difficult and costly to keep a labor in farms for this work.

Project Sketch

Bill of Material

Computer-aided Design

I have designed a Part to hold the Scarecrow bodystructure with the Mounting Stand

Final Object Ready

I have also designed the battery case on TinkerCad Software

Laser cutting process

To Laser Cut a Body structure which fits exactly into the Manequine Case I have Traced the Footprint of the Part.

Laser Cutting Parts

I have cut all the parts for making the mechanism

Electronics Design

I have made my own Controller Board for Automation of the Scarecrow

PCB Schematic on KI CAD Software

Routing Connection

Milling Process

Soldering of the PCB

Testing of Board

Substractive Lathe operation

Preparation for Assembly

Painting the Laser cutted parts

Taking out the speaker controller to connect with our board

Mounting the Screw on the Speaker Mount

Painting the Laser cutted parts

Battery Case Fitting and Switch Connection

Mounting Stand for ScareCrow

ScareCrow Face

Assembly

Assemblying the Body mechanism

Mount the Driving Gear and Driver Motor

Mount the Driven Gear and Sliding Arm

Mount the Driven Gear and Sliding Arm

Making the Electronics Connection

Connecting the Micro-Controller Board with the Speaker board

Mounting the Controller Box

Connecting the Connectors of Battery and Speaker with Board

Loading the code

Arduino Code Explanation

void setup()

The setup() function runs once when you press reset or power the board. This is where you initialize the settings.

void setup() {
  pinMode(10, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(21, OUTPUT);
  digitalWrite(21, LOW);
}

• pinMode(10, OUTPUT);: This sets pin 10 as an output pin.
• pinMode(8, OUTPUT);: This sets pin 8 as an output pin.
• pinMode(21, OUTPUT);: This sets pin 21 as an output pin.
• digitalWrite(21, LOW);: This sets pin 21 to a LOW state initially (turns it off).

void loop()

The loop() function runs continuously after the setup() function has completed.

void loop() {
  digitalWrite(21, HIGH);
  delay(1000);
  digitalWrite(10, HIGH);  
  delay(1000);                      
  digitalWrite(10, LOW);
  delay(5000);
  digitalWrite(8, HIGH);  
  digitalWrite(8, LOW);   
  delay(5000);
  digitalWrite(21, LOW);
  delay(10000);
}

• digitalWrite(21, HIGH);: Sets pin 21 to HIGH (turns it on).


• delay(1000);: Waits for 1000 milliseconds (1 second).


• digitalWrite(10, HIGH);: Sets pin 10 to HIGH (turns it on).


• delay(1000);: Waits for 1000 milliseconds (1 second).


• digitalWrite(10, LOW);: Sets pin 10 to LOW (turns it off).


• delay(5000);: Waits for 5000 milliseconds (5 seconds).


• digitalWrite(8, HIGH);: Sets pin 8 to HIGH (turns it on).


• digitalWrite(8, LOW);: Immediately sets pin 8 to LOW (turns it off). This action is practically instantaneous.


• delay(5000);: Waits for 5000 milliseconds (5 seconds).


• digitalWrite(21, LOW);: Sets pin 21 to LOW (turns it off).


• delay(10000);: Waits for 10000 milliseconds (10 seconds).

Summary

• The code turns pin 21 on for 1 second.
• Then, it turns pin 10 on for 1 second and off for 5 seconds.
• Immediately after, it toggles pin 8 on and off (which happens almost instantaneously).
• After that, it turns pin 21 off and waits for 10 seconds.
• This cycle repeats indefinitely.

Packaging the Circuit and Connection in the Case

Final Structural Assembly

Mechanical Assembly and Electronics Integration

Mounting the main structure on the Metal stand

Battery Box Assembly

Assembled body structure and the mounting stand

Dressing up the Scarecrow

Field Installation

Final Presentation

Project Slide

Final Presentation Video

Reference Files:-

Body Mount STL

Battery BOX

Battery BOX Lead

Casing Box

Motor Coupler

Casing Box Cover

Scare Crow mechanism Laser Cut file

PCB Trace File

PCB Edge Cut File

Arduino IDE Code

Acknowledment:-

This journey with FabLab has truly been life-changing for me. Over the past six months, I've had the privilege of acquiring new skills, gaining invaluable experiences, and forging lasting friendships. This transformative journey would not have been possible without the generous support and guidance of several individuals whom I deeply admire and appreciate.

First and foremost, I extend my heartfelt thanks to Prof. Neil Gershenfeld for his unwavering guidance and constant motivation throughout this incredible journey. I am also immensely grateful to Dr. Yogesh Kulkarni, Director of Vigyan Ashram Pabal, whose wise counsel and steadfast support were instrumental in navigating the challenges of FabAcademy.

My sincere appreciation goes out to Mr. Suhas Labade, our dedicated FabLab manager, whose tireless support and mentorship have been invaluable. I am indebted to Ms. Dipali Kamble, my local instructor, for her insightful evaluations and timely guidance, which were crucial to my progress.

I am deeply grateful to my fellow FabAcademy student, Prachi Onkar, whose unwavering support, generous advice, and wonderful camaraderie made every step of this journey more fulfilling. I also extend my heartfelt thanks to Mr. Yogesh Onkar, Prachi's husband, for his encouragement and an worth advice.

Special thanks are due to Mr. Kishor Gaikwad for his guidance on meticulous documentation and to Prasad Patil for his invaluable assistance with CAD designing during Machine Week.

I am also thankful to our FabLab colleagues Priyanka Jadhav, Shankar Sai, Soham Kolaki, Tanmay More, Bhushan Rothe, Mahesh Shinde, Akash Lonke, Sumedh Jadhav, Priyanka Chaudary, and Aarti Bhosale , whose collaboration and support enriched this journey in countless ways.

Lastly, I wish to express my heartfelt gratitude to Milliam (Gloabal Instructor) for this fair evaluation and encouraging comments, during a critical phase of my FabAcademy journey, this feedback renewed my motivation and inspired me to persevere despite the challenges I faced.

Each of you has played a vital role in making this experience not only educational but also deeply rewarding on a personal level. Thank you all for being an integral part of my FabAcademy journey.