Final Project Journal

Project Ideation

Tell us about the idea of your project. Why do you care about this? What were you inspired by? Include images and videos of similar projects

Dr. Shalaby is a nurse robot use to drive medicine to the patient rooms.

During COVID_19 we need to decrease the meeting between people to reduce the infection, special in the quarantine rooms at hospitals, So by using the infrared sensor as a line follower to follow the black track and enter the different patient rooms instead of nurses, before the robot moves, the nurse must enter a right password to be sure the medicine on the tray is correct, then when the robot arrives for the patient and the patient take the medicine, the patient can wave his hand near to 5 cm in front of the nose of the robot (ultrasonic sensor) and the robot move back and get out from the patient room.

I inspired this idea from a waiter robot in a restaurant, it is driving the meals for the tables without any humans effect, so I looked for a medical application for that, and with the situation of the world during COVID_19 I thought that was a good idea and we can improve it more and more

Project Construction

2. Explain the CAD process of your project. How did you use the software to design your project? (List the softwares/tools/materials...etc that you used)

At first, I drew the design on paper and put the initial measurements. Then I started working on the cardboard to make sure the measurements were correct and to adjust them. Then I started drawing the pieces on the Fusion 360 program.

I divided the structure into 3 pieces, the head, the body, and the hands with the tray, I started by drawing the body and controlling its assembly, then the head and assembling it with the body and then the hands, after that, I inserted the electronic components to locate them and make holes to install them, then I extracted the drawings in the format of a DXF file and took them to the Laser ًWork V6 program to prepare them and download them. Cut into a laser device and cut them on wood.

After I cut the parts, I assembled them to make sure they were safe and fit, then fixed the components on them and finished the exterior

2021-03-13 16-52-24.mp4

3. Explain the fabrication process of your project. How did you use the machine to fabricate your project? (List the softwares/tools/materials...etc that you used)

I use the laser cutting machine.

After I exported the sketch file from fusion 360 as DXF file, I import them on the laser work program and check if there is any overlap to remove it, and put the cutting lines with black color, 20 speed and 30 power, and scan line with red color, 300 speed, and 65 power. Then I export the file in LDR and download it to the laser cutting machine.

To use a laser cutting machine :

1_after download the file to the machine, make sure the reference point in the right position and the height of the laser is correct (use the focus tool).

2_select the file from the memory

3_try the track

4_ run the laser

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Project Electronics & Power Management

4. Describe your electronic circuit. What are the input and action components? What is the function of each? How do the components integrate together to form your smart system? (List the softwares/tools/components...etc that you used)

The inputs:

1) Keypad : use for enter the password to allow the motor to move

2) IR sensor : sense the black trake to follow it (- forward if the 2 sensor are white

- Right if the right sensor sense black

- Stop if the 2 sensors sense black)

3) Ultrasonic sensor :to measure the distance and if it is less than 5 cm the robot move back and get out the room

The output:

1) Sounds from MP3 : to make better communication with the robot and make some nice voice for patients.

2) motors and wheels : move forward, left, right and back

The components :

1.arduino uno

1.h_bridge motor driver

4.motors and gears boxs

4.wheels

1. Keypad

1. Ultrasonic

2. IR sensor

1. MP3 module

First, I test each component on its own, review the datasheet, and wire it alone with Arduino to calculate the digital pins I need on Arduino and regulate them

Then, I draw the schematic diagram of the electronic circuit and wire all components together.

5. What is your power source? How did you select the suitable power source for your project? (List the softwares/tools/components...etc that you used)

First, I calculate the power from the volt and current of each component from its datasheet or by the voltmeter.

H-bridge : 3.2 volt

0~36 mA

Ultrasonic :

Voltage:4.5V to 5.5V

Current:10 to 40mA

IR KY-033:

voltage: 3.3V-5V

Working current: ≥ 20mA

Dc motor :

Voltage :4.5V to 9V

Loaded Current :250mA https://components101.com/motors/toy-dc-motor

Mp3 module :

Volt :3.2-5 v

The power source of my project is a Lithium polymer battery with 9 v and we can recharge it and use the tester to make sure it is charged.

I supply the Arduino with the battery and supply the motor through h bridge by the Vin from the Arduino.

KY-033 Tracking Sensor ModuleKY-033 Tracking Sensor Module

Project Programming

6. Describe the code of your project. How did you program each function of the project?

I am write and search about each part of components code alone and test it alone too after that I collect some code and function together , step by step even arrive to collect all parts of code together.

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Project Integration & Testing

7. Demonstrate with text and visuals how did you integrate the project’s modules together? What are the testing results? (Include a Demo video separately, showing a proof of functionality)

First, I divide the code into 3 stations: 1) enter the correct password by Keypad

2) sense the black track by IR

3)sense the distance by ultrasonic

I start by code every component alone then I integration some parts together and test them :

-the keypad with motors

-The IR sensor with motors

-The ultrasonic with mp3 module

Then I integrate all parts of the code together.

Testing :

For the test, I put some sentences to appear on the serial monitor and make sure the code arrives and enters for all loops and functions.

Code sequence:

First: enter the password -the password contains 4 number and #

So if you enter the wrong number with # the buzzer makes a 3 tone or the mp3 says "wrong password"

- if you enter the right numbers but don't enter the # the buzzer make 2 tones or the mp3 says"please try again"

- if you enter the right numbers and # the buzzer make one long tone or the mp3 says "welcome"

Second: when we enter with the right password, the IR sensor starts to sense the black track.

There are many different ways for that I try 2 of them:

1. - If the right and left sense a white color, the robot moves forward.

- if the right sensor read black, the robot move right

- if the right and left sensors read black, the robot stop.

2. If the left sensor read black, the robot moves forward

-if the right sensor reads black, the robot moves right.

-if the right and left sensor read black, the robot stop

3. When the robot stops behind the patient, it will be waiting for 10 seconds to make sure the patient takes the medicine and the mp3 will play a song.

Then if the patient finished he can wave behind the nose of the robot at a distance of 5 cm and the robot will return and get out of the room.

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Project Code File

VID_20210314_193207.mp4

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Sharing & Collaboration

8. Did you ask for feedback? What are the ideas that others have contributed or suggested? What was someone else’s idea that you built upon? How did you help your peers? How did your peers help you?

I cooperated a lot with my colleagues, especially my group (D), because everyone is cooperative and wants to provide assistance, and I have been involved in searching for some solutions for other projects such as the movement of the stepper motor and a code of the water pump.

The assistants in the fab lab, such as engineer Omar and Shams, helped me a lot in carving, repairing, and make holes in the wood I fabricated.

And Eng Mennah helped me a lot in making the tray and accessing problems and trying to solve them with me.

also, Some of my colleagues suggested a way to tie the tray with hand using a drill in the wood and it was very effective.

I ask one of my colleagues to buy screws from the RAM store and it was very helpful.

I passed the MP3 code to a number of its users and tried to explain to them how to use it, and we shared and exchanged the problems that we encountered and how to solve them, such as making sure the connections are in the correct place, the names of the files are correct and the power source is sufficient.

Add Voice Commands to your Projects DFPlayer Mini | Arduino | FactoryForwardDFPlayer Mini (or) MP3-TF-16P Module is a tiny low-cost mp3 module with inbuilt Amplifier. We can use this module to play voice commands stored in SD Card.

Arduino - Controls Pump | Arduino TutorialLearn how to use arduino to control pump. How to program for Arduino to turn pump on/off. The detail instruction, code, wiring diagram, video tutorial, line-by-line code explanation are provided to help you quickly get started with Arduino. Find this and other Arduino tutorials on ArduinoGetStarted.com.

Automatic Plant Watering System Using Arduino UnoThis system monitors the moisture of soil and waters it by 5v DC motor based water pump when needed. By Neeti Thakur Bisen.

Overcoming Challenges

9. When you got stuck, what/who did you turn to? At what point did you have to pause to research or learn more before moving on? What are some mistakes, pitfalls, or challenges that others can avoid if they were doing this project?

I encountered many problems, but I ask help from my instructors, my colleagues, the assistants in the Fab Lab, and Google search.

*One of these problems was when theMP3 module did not work, so I suspected that the speaker had been destroyed, so I looked for a way to test and verify its safety.

*Also, the MP3 stopped many times, so I searched on Google for someone who also faces these problems and how to deal with them.

*I first used the IR to read analog data, so I put it on the analog pin A0 and A1, but because I needed to use all Arduino pins so I use the rest of the analog pins as a digital pin (by use digitalWrite on code), and this affected on the reading of the IR sensor, so I changed the situation of IR reading from analog to digital and it received just 0, 1 and the problem is fixed.

*I also encountered a problem with the IR sensor and its sensitivity, it is read the lines on the ground as they are black lines, which leads to changing its direction because the concept of it is movement depend on white color if the 2 sensors sense the white color the robot walk in forward. so I changed the way of that working to move forward if you sense the black track.

MP3 Player With ArduinoMP3 Player With Arduino: In this assembly, we used an mp3 player with Arduino Uno, a mini PAM8403 sound amplifier with volume adjustment, an mp3 module DFPlayer Mini, and a pair of 3-Watt speakers.This scheme serves not only for the music player, but also to allow voice fun…

Future Work

10. If you had more time, what is one thing you would change/ Do next in your project?

I hope that it becomes a more effective robot and develop it to take a big role in the health system to provide a comfortable environment and good service to the patient and to improve health care by helping the nurses and doctors in the routine tasks.

So I will add:

- Different medical sensors to measure all we need to follow up with the patient, such as his temperature, the amount of oxygen in the blood, and pressure.

-A communication way between a nurse and a patient.

-Motors to move the hand of the robot up and down or replace it with another arm that has more details and flexibility of movement.

File Name [FORMAT]

Final Project Design Files

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