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Raspberry Pi 4B-Based Smart Health Monitoring System with GPS and GSM

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Circuit Documentation

Summary

This document provides a detailed overview of a complex circuit involving various sensors, a camera, a GPS module, a GSM module, and a Raspberry Pi 4B. The circuit is designed to capture images, read sensor data, and communicate via GSM. It also includes a heart pulse sensor for emergency detection. The captured data is displayed on an OLED screen.

Component List

  1. IMX296 Color Global Shutter

    • Description: A high-speed global shutter camera sensor.
    • Pins: Ribbon Cable
  2. MT3608

    • Description: A DC-DC step-up power converter.
    • Pins: VOUT+, VIN+, VOUT-, VIN-
  3. Raspberry Pi 4B

    • Description: A powerful single-board computer.
    • Pins: 3V3, 5V, GPIO2, GPIO3, GND, GPIO4, GPIO14, GPIO15, GPIO17, GPIO18, GPIO27, GPIO22, GPIO23, GPIO24, GPIO10, GPIO9, GPIO25, GPIO11, GPIO8, GPIO7, ID_SD, GPIO5, GPIO6, GPIO12, GPIO13, GPIO19, GPIO16, GPIO26, GPIO20, GPIO21, ID_SC, TR01_TAP, TR00_TAP, TR03_TAP, TR02_TAP, RUN, GLOBAL_EN, ETH, HDMI 0, HDMI 1, CAMERA, AV
  4. Neo 6M GPS Module

    • Description: A GPS module for location tracking.
    • Pins: GND, TX, RX, VCC
  5. Resettable Fuse PTC

    • Description: A resettable fuse for overcurrent protection.
    • Pins: 1, 2
  6. Adafruit BMP388

    • Description: A barometric pressure and temperature sensor.
    • Pins: VCC, 3.3V, GND, SCK/SCL, SDO/ADR, SDI/SDA, CS, INT
  7. Lipo Battery

    • Description: A rechargeable lithium polymer battery.
    • Pins: VCC, GND
  8. MPU-6050

    • Description: A 6-axis motion tracking device.
    • Pins: VCC, GND, SCL, SDA, XDA, XCL, AD0, INT
  9. Sim800l

    • Description: A GSM module for communication.
    • Pins: NET, RST, VCC, RXD, TXD, GND
  10. Adafruit Perma-Proto HAT

    • Description: A prototyping HAT for Raspberry Pi.
    • Pins: SDA, SCL, TXD, RXD, GPIO4, GPIO17, GPIO18, GPIO27, GPIO22, GPIO23, GPIO24, GPIO25, SPI_MOSI, SPI_MISO, SPI_SCLK, SPI_CE0, SPI_CE1, GPIO5, GPIO6, GPIO12, GPIO13, GPIO16, GPIO19, GPIO20, GPIO21, 3.3V, 5.0V, GND, EEDATA, EECLK, GPIO26, N$1, N$2, N$3, N$4, N$5, N$6, N$7, N$8, N$9, N$10, N$11, N$12, N$13, N$14, N$15, N$17, N$18, N$19, N$20, N$21, N$22, N$23, N$39, N$41, N$42, N$43, N$44, N$45, N$46, N$47, N$48, N$49, N$50, N$51, N$52, N$53, N$54, N$55, N$56, N$57, N$58, N$59, N$60, N$61, N$62
  11. Heart Pulse Sensor

    • Description: A sensor to detect heart pulse.
    • Pins: GND, VCC, SIGNAL
  12. 0.96" OLED

    • Description: A small OLED display.
    • Pins: GND, VDD, SCK, SDA
  13. 7-Segment Panel Celsius Thermometer

    • Description: A thermometer with a 7-segment display.
    • Pins: V+, V-
  14. Solar Panel

    • Description: A solar panel for energy harvesting.
    • Pins: +, -
  15. 1N4007 Rectifier Diode

    • Description: A general-purpose rectifier diode.
    • Pins: Cathode, Anode
  16. Ceramic Capacitor

    • Description: A capacitor for filtering and stabilization.
    • Pins: pin0, pin1
    • Properties: Capacitance: 0.0000001 Farads

Wiring Details

IMX296 Color Global Shutter

  • Ribbon Cable connected to Raspberry Pi 4B CAMERA pin.

MT3608

  • VIN+ connected to Ceramic Capacitor pin1, Lipo Battery VCC, and Solar Panel -.
  • VIN- connected to Ceramic Capacitor pin0, Lipo Battery GND, and Solar Panel +.
  • VOUT+ connected to Resettable Fuse PTC pin2.
  • VOUT- connected to Adafruit Perma-Proto HAT GND.

Raspberry Pi 4B

  • CAMERA connected to IMX296 Color Global Shutter Ribbon Cable.

Neo 6M GPS Module

  • GND connected to Adafruit Perma-Proto HAT GND.
  • TX connected to Adafruit Perma-Proto HAT TXD.
  • RX connected to Adafruit Perma-Proto HAT RXD.
  • VCC connected to Adafruit Perma-Proto HAT 3.3V.

Resettable Fuse PTC

  • 2 connected to MT3608 VOUT+.
  • 1 connected to 1N4007 Rectifier Diode Cathode.

Adafruit BMP388

  • SCK/SCL connected to Adafruit Perma-Proto HAT N$61.
  • SDI/SDA connected to Adafruit Perma-Proto HAT N$62.
  • GND connected to Adafruit Perma-Proto HAT GND.
  • VCC connected to Adafruit Perma-Proto HAT 3.3V.

Lipo Battery

  • VCC connected to Ceramic Capacitor pin1, MT3608 VIN+, and Solar Panel -.
  • GND connected to Ceramic Capacitor pin0, MT3608 VIN-, and Solar Panel +.

MPU-6050

  • VCC connected to Adafruit Perma-Proto HAT 3.3V.
  • GND connected to Adafruit Perma-Proto HAT GND.
  • SCL connected to Adafruit Perma-Proto HAT N$61.
  • SDA connected to Adafruit Perma-Proto HAT N$62.

Sim800l

  • VCC connected to Adafruit Perma-Proto HAT 5.0V.
  • RXD connected to Adafruit Perma-Proto HAT GPIO18.
  • TXD connected to Adafruit Perma-Proto HAT GPIO17.
  • GND connected to Adafruit Perma-Proto HAT GND.

Adafruit Perma-Proto HAT

  • GND connected to MT3608 VOUT-, Adafruit BMP388 GND, Neo 6M GPS Module GND, MPU-6050 GND, Sim800l GND, Heart Pulse Sensor GND, 0.96" OLED GND, and 7-Segment Panel Celsius Thermometer V-.
  • 3.3V connected to Adafruit BMP388 VCC, Neo 6M GPS Module VCC, MPU-6050 VCC, Heart Pulse Sensor VCC, 0.96" OLED VDD, and 7-Segment Panel Celsius Thermometer V+.
  • 5.0V connected to Sim800l VCC and 1N4007 Rectifier Diode Anode.
  • N$61 connected to Adafruit BMP388 SCK/SCL and MPU-6050 SCL.
  • N$62 connected to Adafruit BMP388 SDI/SDA and MPU-6050 SDA.
  • GPIO4 connected to Heart Pulse Sensor SIGNAL.
  • GPIO22 connected to 0.96" OLED SCK.