Circuit Documentation

Summary

This document provides a detailed overview of a circuit design that includes a temperature sensor (MAX30205), a pulse oximeter and heart-rate sensor (MAX30102), a microcontroller (Seeed Studio nRF52840), and a 3.7V LiPo battery. The document includes a component list, wiring details, and the embedded code used in the microcontroller.

Component List

MAX30205

• Description: Temperature Sensor
• Pins: VCC, GND, SDA, SCL, OS, A0, A1, A2
• Purpose: Measures temperature

Seeed Studio nRF52840

• Description: Microcontroller
• Pins: VUSB, GND, 3V3, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, NFC1, NFC2, B-, B+
• Purpose: Central processing unit for the circuit

MAX30102

• Description: Pulse Oximeter and Heart-Rate Sensor
• Pins: VIN, SDA, SCL, GND, RD, IRD, INT
• Purpose: Measures pulse and heart rate

3.7V LiPo Battery

• Description: Power Supply
• Pins: +Ve, GND
• Purpose: Provides power to the circuit

Wiring Details

MAX30205

• VCC: Connected to Seeed Studio nRF52840 (3V3)
• GND: Connected to Seeed Studio nRF52840 (GND) and 3.7V LiPo Battery (GND)
• SDA: Connected to Seeed Studio nRF52840 (Pin 0)
• SCL: Connected to Seeed Studio nRF52840 (Pin 2)

Seeed Studio nRF52840

• 3V3: Connected to MAX30102 (VIN) and MAX30205 (VCC)
• GND: Connected to MAX30102 (GND), MAX30205 (GND), and 3.7V LiPo Battery (GND)
• VUSB: Connected to 3.7V LiPo Battery (+Ve)
• Pin 0: Connected to MAX30205 (SDA)
• Pin 2: Connected to MAX30205 (SCL)
• Pin 3: Connected to MAX30102 (SDA)
• Pin 5: Connected to MAX30102 (INT)
• Pin 7: Connected to MAX30102 (SCL)

MAX30102

• VIN: Connected to Seeed Studio nRF52840 (3V3)
• GND: Connected to Seeed Studio nRF52840 (GND) and 3.7V LiPo Battery (GND)
• SDA: Connected to Seeed Studio nRF52840 (Pin 3)
• SCL: Connected to Seeed Studio nRF52840 (Pin 7)
• INT: Connected to Seeed Studio nRF52840 (Pin 5)

3.7V LiPo Battery

• +Ve: Connected to Seeed Studio nRF52840 (VUSB)
• GND: Connected to Seeed Studio nRF52840 (GND), MAX30102 (GND), and MAX30205 (GND)

Embedded Code

sketch.ino

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

}

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

}

documentation.txt