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16.Applications and Implications:

21-05-2021 | Jai Hanani

1. Objectives:

2. Assignment:

Propose a final project masterpiece that integrates the range of units covered.

What will it do?

1. It measures the height of a person using a Ultrasonic Sensor, and display the height on a electro-chemical I2C LCD.

Who's done what beforehand?

2. https://create.arduino.cc/projecthub/mircemk/diy-arduino-height-measuring-machine-0437dd

What will you design?

3. • Frame: The wooden frame to hold the sensors, electronics, and the LCD.
   • Casing: The casing to hold the LCD, and the Electronics.
   • Top: The pad on which the ultrasonic sensor, and the electronics will placed, on the top of the frame.
   • Electronics Design: I will design the main board for getting the sensor data and display it on LCD.
   • Programming: Embedded programming for microcontrollers.
     Connect it to Firebase.
   • Networking: Use I2C to connect MainBoard, DHT-11 Board, and LCD. Use Serial to connect DHT-11 Board and ESP32 DevKit.

What materials and components will be used?

4. • Frame: 18mm Wood.
   • Casing: PLA Plastic.
   • Top: 3.14mm Acrylic.
   • Electronics:
     • MainBoard:
       • ATTiny1614 X 1
       • Connection Jack 2.1mm X 1
       • 2 X 2 Male Headers X 2
       • 1 X 6 Header X 1
       • Tactical Switch X 1
       • 1 X 3 Header X 1
       • 10uF Capacitor X 2
       • 1uF Capacitor X 1
       • 4.99K Resistors X 2
       • 0K Resistor X 1
       • Blue LED X 1
       • 5V 1A Regulator X 1
     • DHT-11 Board: I will be using the input-devices board that I made here

How much will they cost?

5. 

What parts and systems will be made?

6. • A Wooden Frame
   • A 3D Printed Electronics Casing
   • A 3D Printed Slidable Frame for LCD
   • An Acrylic Top for Holding Ultrasonic Sensor.
   • A PCB

What processes will be used?

• PCB Milling [Subtractive]
• Acrylic Top[Subtractive]
• Wood Machining For Frame[Subtractive]
• 3D Printing For Casing[Additive]
• Embedded Programming

What questions need to be answered?

7. The Range and The Precision of the Ultrasonic Sensor

How will it be evaluated?

8. If it can reliably measure the height of the person, with |1|cm accuracy.
   It can account for sudden jumps in the analog inputs, when a person moves in or out.
   It can display the average height, and the maximum height of the person.