Circuit Documentation

Summary

This circuit integrates various sensors and LEDs with an Arduino Nano 33 BLE microcontroller. The sensors include an MPU6050 accelerometer and gyroscope, a MAX30102 heart rate and oxygen sensor, and a MAX30205 temperature sensor. The circuit also includes multiple LEDs (red, blue, yellow, green) for visual indications. Power is supplied by a 9V battery regulated through a voltage regulator.

Component List

1. MPU6050 Accelerometer + Gyroscope (Wokwi Compatible)

   • Pins: INT, AD0, XCL, XDA, SDA, SCL, GND, VCC
   • Description: Accelerometer and gyroscope sensor.
   • Purpose: To measure acceleration and angular velocity.

2. LED: Two Pin (red)

   • Pins: cathode, anode
   • Description: Red LED.
   • Purpose: Visual indication.

3. LED: Two Pin (blue)

   • Pins: cathode, anode
   • Description: Blue LED.
   • Purpose: Visual indication.

4. Resistor (220 Ohms)

   • Pins: pin1, pin2
   • Description: Resistor.
   • Purpose: Current limiting for LEDs.

5. LED: Two Pin (yellow)

   • Pins: cathode, anode
   • Description: Yellow LED.
   • Purpose: Visual indication.

6. LED: Two Pin (green)

   • Pins: cathode, anode
   • Description: Green LED.
   • Purpose: Visual indication.

7. Nano 33 BLE with pinout

   • Pins: TX, RX, RESET, GND, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11 (MOSI), D12 (MISO), VIN, 5V, A7, A6, A5 (SCL), A4 (SDA), A3, A2, A1, A0, AREF, 3V3, D13 (SCK)
   • Description: Arduino Nano 33 BLE microcontroller.
   • Purpose: Central processing unit for the circuit.

8. Voltage Regulator

   • Pins: ADJ, IN, OUT
   • Description: Voltage regulator.
   • Purpose: To regulate the 9V battery voltage to a suitable level for the circuit.

9. 9V Battery

   • Pins: -, +
   • Description: 9V battery.
   • Purpose: Power supply for the circuit.

10. MAX30102 Heart Rate and Oxygen Sensor

    • Pins: VIN, SCL, SDA, INT, IRQ, RD, GND
    • Description: Heart rate and oxygen sensor.
    • Purpose: To measure heart rate and blood oxygen levels.

11. MAX30205

    • Pins: VCC, GND, SDA, SCL, OS, A0, A1, A2
    • Description: Temperature sensor.
    • Purpose: To measure temperature.

Wiring Details

MPU6050 Accelerometer + Gyroscope (Wokwi Compatible)

• SDA connected to Nano 33 BLE A4 (SDA)
• SCL connected to Nano 33 BLE A5 (SCL)
• VCC connected to Nano 33 BLE 5V
• GND connected to Nano 33 BLE GND

LED: Two Pin (red)

• Anode connected to Resistor pin1
• Resistor pin2 connected to Nano 33 BLE D3
• Cathode connected to Nano 33 BLE GND

LED: Two Pin (blue)

• Anode connected to Resistor pin1
• Resistor pin2 connected to Nano 33 BLE GND
• Cathode connected to Nano 33 BLE GND

LED: Two Pin (yellow)

• Anode connected to Resistor pin1
• Resistor pin2 connected to Nano 33 BLE D4
• Cathode connected to Nano 33 BLE GND

LED: Two Pin (green)

• Anode connected to Resistor pin1
• Resistor pin2 connected to Nano 33 BLE D5
• Cathode connected to Nano 33 BLE GND

MAX30102 Heart Rate and Oxygen Sensor

• SDA connected to Nano 33 BLE A4 (SDA)
• SCL connected to Nano 33 BLE A5 (SCL)
• VIN connected to Nano 33 BLE 5V
• GND connected to Nano 33 BLE GND

MAX30205

• SDA connected to Nano 33 BLE A4 (SDA)
• SCL connected to Nano 33 BLE A5 (SCL)
• VCC connected to Nano 33 BLE 5V
• GND connected to Nano 33 BLE GND
• A0, A1, A2 connected to Nano 33 BLE GND

Voltage Regulator

• IN connected to 9V Battery +
• OUT connected to Nano 33 BLE VIN
• ADJ connected to Nano 33 BLE GND

9V Battery

• + connected to Voltage Regulator IN
• - connected to Nano 33 BLE GND

Code

No code provided for this circuit.

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This documentation provides a comprehensive overview of the circuit, including a detailed list of components and their wiring connections.