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Coins Smart box
Coins Smart box
1- Tell us about the purpose of your project. Which problem does it solve? Why do you care about this? What were you inspired by? Include images and videos of similar projects
1- Tell us about the purpose of your project. Which problem does it solve? Why do you care about this? What were you inspired by? Include images and videos of similar projects
Egyptian currency has three coin categories; the one pound, the Fifty cents, and the twenty-five cents. Collecting and counting these tiny coins sometimes became messy and time-consuming. So, I got the idea of building a smart box that can collect these coins, sort and dispense them in a more organized way
2- Describe the project idea and general features. How would it work?
2- Describe the project idea and general features. How would it work?
The box major parts are:
1- the body, which is separated into three chambers for each coin category from the inside. And on the outside, there is an LCD screen attached to it for displaying coins amount and buttons for controlling different features
3- the sorting part, which is located inside the box at the upper part, it performs the main functions of the box, which is distributing the coins in the box chambers. It is consists of a sliding arm ( that is attached to a linear rail with a stepper motor to control its movement) that moves the coin across different orifices that lead to the coin chambers, and according to the coin dimension, it will fall in the suitable orifice. (inspired by https://www.youtube.com/watch?v=7ILHtAPY29I)
4- the dispensing part, which is a disc that rotate to open and close each coin chamber and choose one coin to be dispensed at a time (inspired by https://www.youtube.com/watch?v=Z5GADxTa1sA0
3- Sketch your project: You may use pen and paper or a simple sketching tool like Microsoft Paint or Photoshop
3- Sketch your project: You may use pen and paper or a simple sketching tool like Microsoft Paint or Photoshop
Project Planning
Project Planning
4- Describe the Technical Modules that your project consists of
4- Describe the Technical Modules that your project consists of
Construction Parts
the six sided box, sorting part, chambers walls, orifice narrowing parts for the photo interrupter sensors, and the dispensing discs
Input (Sensing and/or User)
dispensing button
4 photo interrupter sensors
numeric keypad for input the number of coins to be dispensed
weight sensor for each chamber to detect the number of coins when it reaches specific weight
4 photo interrupter sensors, for the chambers orifices and the main orifice of the device
Action
LCD display for displaying number of each coin and the total amount of money in the box
slider which have linear motion for distributing the coins in the chambers
4 servo motor for controlling the slider and the dispensing disc motions
red light when the coins hit specific weight and the chamber capacity is about to be full
Brain
Arduino UNO microcontroller for managing the input and output devices
Power Management
The device will contains an independent power source (a 5 volt battery)
5- Create a cardboard prototype of your project, demonstrating the project face as well as internal movements and mechanisms. Include a demo video and photos of the prototype.
5- Create a cardboard prototype of your project, demonstrating the project face as well as internal movements and mechanisms. Include a demo video and photos of the prototype.
slider.mp4dispensing.mp46- Categorize your project’s User Features into: Minimum, Complete, and Nice-to-have features. List the required action and input components per feature.
6- Categorize your project’s User Features into: Minimum, Complete, and Nice-to-have features. List the required action and input components per feature.
Minimum Features: are the least amount of features that would demonstrate the coverage of all the technical modules and their complete integration
Complete Features: are the set of features that will complete your original project objective and vision
Nice-to-have Features: are the extra set of features that will make the project cooler, yet they need extra time, effort, and/or resources to finish
Minimum User Features
sorting the coins
Action: Slider movement (Stepper motor)
Sensing: photo interrupter sensors at the main orifice of the box
User Input: none
counting each coin number and calculating the total amount
Action: LCD display
Sensing: photo interrupter sensors at each chamber orifice
User Input: none
auto dispensing the coins (from one chamber)
Action: dispensing disc rotation (servo motor)
Sensing: none
User Input: clicking on dispensing button and determine the amount to be dispensed from each coin category
Complete User Features
auto dispensing the coins (from the 3 chambers)
Action: dispensing disc rotation (servo motor)
Sensing: none
User Input: clicking on dispensing button and determine the amount to be dispensed from each coin category
red light when a chamber is about to be full
Action: red bulb
Sensing: weight of the coins
User Input: none
Nice-to-have User Features
sensing if a chamber is empty or doesn't contain enough coins for dispensing in the dispensing mode
Action: LCD display
Sensing: none
User Input: none
taking from the user the total amount of money he wants to dispense, then auto detect the amount of coins to be dispensed from each coin category depending on their availability in the box
7- What are the project tasks and its time-frame?
7- What are the project tasks and its time-frame?
Task
Sub-Tasks
From:
To:
Develop the Sorting part
1- develop a CAD for it
3- fabricate the part using laser cutter
3- integrate the electronic parts (IR sensors and vibration motor) to it
4- write the code for the sensors and test the functionality of the sorting mechanism and modify its parameters until reaching the optimum performance
15/ 09 / 2021
16/ 09 / 2021
16/ 09 / 2021
17/ 09 / 2021
15/ 09 / 2021
16/ 09 / 2021
16/ 09 / 2021
18/ 09 / 2021
Develop the box chambers
1- CAD design the chambers body with suitable dimensions for fitting with other components
2- fabricate the design using laser cutter
3- test the complete functionality with the sliding part
19/ 09 / 2021
19/ 09 / 2021
19/ 09 / 2021
20/ 09 / 2021
19/ 09 / 2021
19/ 09 / 2021
Develop the dispensing part
1- CAD design the dispensing disc
2- fabricate the design using laser cutter
3- write the code for the servo motor and test the dispensing mechanism, then apply modifications if needed
20/ 09 / 2021
22/ 09 / 2021
22/09/2021
21/ 09 / 2021
22/09/2021
23/9/2021
Design the outer body of the box
1- CAD design the outer body and the dispensing chamber
2- integrate the LCD and the the key on the box face and finish the code for the whole functionality of the project
24 / 09 / 2021
24/09/2021
24/ 09/ 2021
25/09/2021
Add "nice to have features" 1- integrate the weight sensor to
the box and write its code
2- upgrade the dispensing options, so that you just can provide the device with the total amount of money you want and it will automatically decide which coins to dispense
26/ 09/ 2021
26/09/2021
26/ 09/ 2021
26/09/2021
8- What are the required electronic components and materials for the project?
8- What are the required electronic components and materials for the project?
Component/Material
Amount
Link
Servo motor
3
https://ram-e-shop.com/product/servo-sg90/
3x4 matrix keypad
1
https://ram-e-shop.com/product/kit-kp-202/
vibration motor
4
https://ram-e-shop.com/product/gt2-bore-8mm-20-teeth-timing-aluminum-pulley-2-meters-gt2-6mm-open-timing-belt/
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