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Arduino UNO-Based Motion and Flex Sensor System with Bluetooth Connectivity

Image of Arduino UNO-Based Motion and Flex Sensor System with Bluetooth Connectivity

Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller interfacing with an MPU6050 accelerometer and gyroscope sensor, an HC-05 Bluetooth module, several flex resistors, and standard resistors. The circuit is powered by a 9V battery. The Arduino UNO reads data from the MPU6050 and flex resistors, and communicates with the HC-05 Bluetooth module to transmit data wirelessly.

Component List

  1. Arduino UNO

    • Description: A microcontroller board based on the ATmega328P.
    • Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0
  2. InvenSense MPU6050

    • Description: A 6-axis motion tracking device that combines a 3-axis gyroscope and a 3-axis accelerometer.
    • Pins: VCC, GND, SCL, SDA, XDA, XCL, AD0, INT
  3. HC-05 Bluetooth Module

    • Description: A Bluetooth module for wireless communication.
    • Pins: Key, VCC, TXD, RXD, State, GND
  4. 2.2 inch Basic Flex Resistor

    • Description: A flex sensor that changes resistance when bent.
    • Pins: Pin 2, pin 1
  5. Resistor (1000 Ohms)

    • Description: A standard resistor with a resistance of 1000 Ohms.
    • Pins: pin1, pin2
  6. 9V Battery

    • Description: A standard 9V battery for powering the circuit.
    • Pins: +, -

Wiring Details

Arduino UNO

  • GND is connected to:

    • Pin 1 of all 2.2 inch Basic Flex Resistors
  • A0 is connected to:

    • pin1 of a 1000 Ohm Resistor
  • A1 is connected to:

    • pin1 of a 1000 Ohm Resistor
  • A2 is connected to:

    • pin1 of a 1000 Ohm Resistor
  • A3 is connected to:

    • pin1 of a 1000 Ohm Resistor
  • A4 is connected to:

    • SDA of the InvenSense MPU6050
  • A5 is connected to:

    • SCL of the InvenSense MPU6050
  • D1 is connected to:

    • RXD of the HC-05 Bluetooth Module
  • D0 is connected to:

    • TXD of the HC-05 Bluetooth Module

InvenSense MPU6050

  • VCC is connected to:

    • Key of the HC-05 Bluetooth Module
      • of the 9V Battery
  • GND is connected to:

    • GND of the HC-05 Bluetooth Module
      • of the 9V Battery

HC-05 Bluetooth Module

  • Key is connected to:

    • VCC of the InvenSense MPU6050
      • of the 9V Battery
  • GND is connected to:

    • GND of the InvenSense MPU6050
      • of the 9V Battery

2.2 inch Basic Flex Resistor

  • Pin 1 is connected to:
    • GND of the Arduino UNO

Resistor (1000 Ohms)

  • pin1 of one resistor is connected to:

    • A0 of the Arduino UNO
  • pin1 of another resistor is connected to:

    • A1 of the Arduino UNO
  • pin1 of another resistor is connected to:

    • A2 of the Arduino UNO
  • pin1 of another resistor is connected to:

    • A3 of the Arduino UNO

Documented Code

Arduino UNO Code (sketch.ino)

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Additional Documentation (documentation.txt)


This documentation provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and the code used in the microcontroller.