The Alpha Geek – Geeking Out

IMU

Project #25 – Movement – IMU – Mk05

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#DonLucElectronics #DonLuc #SparkFunRedBoard #Movement #Magnetometer #Accelerometer #Gyroscope #9DOF #Barometer #Arduino #Project #Fritzing #Programming #Electronics #Microcontrollers #Consultant

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IMU

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IMU

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Inertial Measurement Unit

An inertial measurement unit (IMU) is an electronic device that measures and reports a body’s specific force, angular rate, and sometimes the orientation of the body, using a combination of accelerometers, gyroscopes, and sometimes magnetometers. When the magnetometer is included, IMUs are referred to as IMMUs. IMUs are typically used to maneuver modern vehicles including motorcycles, missiles, aircraft, including unmanned aerial vehicles, among many others, and spacecraft, including satellites and landers. Recent developments allow for the production of IMU-enabled GPS devices. An IMU allows a GPS receiver to work when GPS-signals are unavailable, such as in tunnels, inside buildings, or when electronic interference is present.

AltIMU-10 v5 Gyro, Accelerometer, Compass, and Altimeter (LSM6DS33, LIS3MDL, and LPS25H Carrier)

The Pololu AltIMU-10 v5 is an inertial measurement unit (IMU) and altimeter that features the same LSM6DS33 gyro and accelerometer and LIS3MDL magnetometer as the MinIMU-9 v5, and adds an LPS25H digital barometer. An I²C interface accesses ten independent pressure, rotation, acceleration, and magnetic measurements that can be used to calculate the sensor’s altitude and absolute orientation. The board operates from 2.5 to 5.5 V and has a 0.1″ pin spacing.

DL2211Mk01

1 x SparkFun RedBoard Qwiic
1 x SparkFun Micro OLED (Qwiic)
1 x Qwiic Cable – 100mm
1 x Pololu AltIMU-10 v5
1 x SparkFun Cerberus USB Cable

SparkFun RedBoard Qwiic

SDA – Analog A4
SCL – Analog A5
VIN – +3.3V
GND – GND

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DL2211Mk01p.ino

/* ***** Don Luc Electronics © *****
Software Version Information
Project #25 - Movement - IMU - Mk05
25-05
DL2211Mk01p.ino
1 x SparkFun RedBoard Qwiic
1 x SparkFun Micro OLED (Qwiic)
1 x Qwiic Cable - 100mm
1 x Pololu AltIMU-10 v5
1 x SparkFun Cerberus USB Cable
*/

// Include the Library Code
// Two Wire Interface (TWI/I2C)
#include <Wire.h>
// SparkFun Micro OLED
#include <SFE_MicroOLED.h>
// Includes and variables for IMU integration
// STMicroelectronics LSM6DS33 gyroscope and accelerometer
#include <LSM6.h>
// STMicroelectronics LIS3MDL magnetometer
#include <LIS3MDL.h>
// STMicroelectronics LPS25H digital barometer
#include <LPS.h>

// 9DoF IMU
// STMicroelectronics LSM6DS33 gyroscope and accelerometer
LSM6 imu;
// Accelerometer and Gyroscopes
// Accelerometer
int imuAX;
int imuAY;
int imuAZ;
// Gyroscopes 
int imuGX;
int imuGY;
int imuGZ;
// STMicroelectronics LIS3MDL magnetometer
LIS3MDL mag;
// Magnetometer
int magX;
int magY;
int magZ;
// STMicroelectronics LPS25H digital barometer
LPS ps;
// Digital Barometer
float pressure;
float altitude;
float temperature;

// SparkFun Micro OLED
#define PIN_RESET 9
#define DC_JUMPER 1
// I2C declaration
MicroOLED oled(PIN_RESET, DC_JUMPER);

// Software Version Information
String sver = "25-05";

void loop() {

  // Accelerometer and Gyroscopes
  isIMU();

  // Magnetometer
  isMag();

  // Barometer
  isBarometer();
  
  // Micro OLED
  isMicroOLED();

}

getAccelGyro.ino

// Accelerometer and Gyroscopes
// Setup IMU
void setupIMU() {

  // Setup IMU
  imu.init();
  // Default
  imu.enableDefault();
  
}
// Accelerometer and Gyroscopes
void isIMU() {

  // Accelerometer and Gyroscopes
  imu.read();
  // Accelerometer x, y, z
  imuAX = imu.a.x;
  imuAY = imu.a.y;
  imuAZ = imu.a.z;
  // Gyroscopes x, y, z
  imuGX = imu.g.x;
  imuGY = imu.g.y;
  imuGZ = imu.g.z;

}

getBarometer.ino

// STMicroelectronics LPS25H digital barometer
// Setup Barometer
void isSetupBarometer(){

  // Setup Barometer
  ps.init();
  // Default
  ps.enableDefault();
  
}
// Barometer
void isBarometer(){

  // Barometer
  pressure = ps.readPressureMillibars();
  // Altitude Meters
  altitude = ps.pressureToAltitudeMeters(pressure);
  // Temperature Celsius
  temperature = ps.readTemperatureC();
  
}

getMagnetometer.ino

// Magnetometer
// Setup Magnetometer
void setupMag() {

  // Setup Magnetometer
  mag.init();
  // Default
  mag.enableDefault();
  
}
// Magnetometer
void isMag() {

  // Magnetometer
  mag.read();
  // Magnetometer x, y, z
  magX = mag.m.x;
  magY = mag.m.y;
  magZ = mag.m.z;
  
}

getMicroOLED.ino

// SparkFun Micro OLED
// Setup Micro OLED
void isSetupMicroOLED() {

  // Initialize the OLED
  oled.begin();
  // Clear the display's internal memory
  oled.clear(ALL);
  // Display what's in the buffer (splashscreen)
  oled.display();

  // Delay 1000 ms
  delay(1000);

  // Clear the buffer.
  oled.clear(PAGE);
  
}
// Micro OLED
void isMicroOLED() {

  // Text Display Accelerometer
  // Clear the display
  oled.clear(PAGE);
  // Set cursor to top-left
  oled.setCursor(0, 0);
  // Set font to type 0
  oled.setFontType(0);
  // Accelerometer
  oled.print("Acceler");
  oled.setCursor(0, 12);
  // X
  oled.print("X: ");
  oled.print(imuAX);
  oled.setCursor(0, 25);
  // Y
  oled.print("Y: ");
  oled.print(imuAY);
  oled.setCursor(0, 39);
  // Z
  oled.print("Z: ");
  oled.print(imuAZ);
  oled.display();

  // Delay
  delay(3000);

  // Text Display Gyroscopes
  // Clear the display
  oled.clear(PAGE);
  // Set cursor to top-left
  oled.setCursor(0, 0);
  // Set font to type 0
  oled.setFontType(0);
  // Gyroscopes
  oled.print("Gyro");
  oled.setCursor(0, 12);
  // X
  oled.print("X: ");
  oled.print(imuGX);
  oled.setCursor(0, 25);
  // Y
  oled.print("Y: ");
  oled.print(imuGY);
  oled.setCursor(0, 39);
  // Z
  oled.print("Z: ");
  oled.print(imuGZ);
  oled.display();

  // Delay
  delay(3000);

  // Text Display Magnetometer
  // Clear the display
  oled.clear(PAGE);
  // Set cursor to top-left
  oled.setCursor(0, 0);
  // Set font to type 0
  oled.setFontType(0);
  // Magnetometer
  oled.print("Mag");
  oled.setCursor(0, 12);
  // X
  oled.print("X: ");
  oled.print(magX);
  oled.setCursor(0, 25);
  // Y
  oled.print("Y: ");
  oled.print(magY);
  oled.setCursor(0, 39);
  // Z
  oled.print("Z: ");
  oled.print(magZ);
  oled.display();

  // Delay
  delay(3000);

  // Text Display Barometer
  // Clear the display
  oled.clear(PAGE);
  // Set cursor to top-left
  oled.setCursor(0, 0);
  // Set font to type 0
  oled.setFontType(0);
  // Barometer
  oled.print("Baro");
  oled.setCursor(0, 12);
  // Pressure
  oled.print("P: ");
  oled.print(pressure);
  oled.setCursor(0, 25);
  // Altitude Meters
  oled.print("A: ");
  oled.print(altitude);
  oled.setCursor(0, 39);
  // Temperature Celsius
  oled.print("T: ");
  oled.print(temperature);
  oled.display();

  // Delay
  delay(3000);

}

setup.ino

// Setup
void setup() {

  // Give display time to power on
  delay(100);
  
  // Set up I2C bus
  Wire.begin();

  // Setup Micro OLED
  isSetupMicroOLED();

  // Setup IMU
  setupIMU();

  // Setup Magnetometer
  setupMag();

  // Setup Barometer
  isSetupBarometer();

}

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People can contact us: https://www.donluc.com/?page_id=1927

Technology Experience

  • Single-Board Microcontrollers (PIC, Arduino, Raspberry Pi,Espressif, etc…)
  • IoT
  • Wireless (Radio Frequency, Bluetooth, WiFi, Etc…)
  • Robotics
  • Camera and Video Capture Receiver Stationary, Wheel/Tank and Underwater Vehicle
  • Unmanned Vehicles Terrestrial and Marine
  • Machine Learning
  • RTOS
  • Research & Development (R & D)

Instructor and E-Mentor

  • IoT
  • PIC Microcontrollers
  • Arduino
  • Raspberry Pi
  • Espressif
  • Robotics

Follow Us

Luc Paquin – Curriculum Vitae – 2022
https://www.donluc.com/luc/

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Don Luc

Project #19: Time – 9DoF IMU – Mk09

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#DonLucElectronics #DonLuc #Time #IMU #RTC #Display #Adalogger #MicroSD #GPSReceiver #CCS811 #BME280 #Arduino #ESP32 #SparkFunESP32WROOM #Project #Programming #Electronics #Microcontrollers #Consultant #VideoBlog

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9DoF IMU

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9DoF IMU

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9DoF IMU

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IMU

Accelerometers, gyroscopes and magnetometer are great, but alone they don’t give you quite enough information to be able to comfortably calculate things like orientation, position, and velocity. To measure those and other variables many people combine the two sensors, to create an inertial measurement unit (IMU) which provides two to nine degrees of freedom (DOF). IMUs are widely used in devices that require knowledge of their exact position, for example robotic arms, guided missiles, and tools used in the study of body motion.

IMUs can really be broken down into two classes: simple IMU combo boards, which just mount an accelerometer, gyroscopes and magnetometer onto a single PCB, and more complex units that interface a microcontroller with the sensors to produce a serial output. If you’ve glanced over the previous sections, you should know what kind of specifications to be looking for in IMUs: the number of axes (both for the accelerometer, gyroscopes and magnetometer), the measuring range of the sensors, and the interface.

Pololu MinIMU-9 v5 Gyro, Accelerometer, and Compass

The Pololu MinIMU-9 v5 is an inertial measurement unit (9DoF IMU) that packs an LSM6DS33 3-axis gyro and 3-axis accelerometer and an LIS3MDL 3-axis magnetometer onto a tiny board. An I²C interface accesses nine independent rotation, acceleration, and magnetic measurements that can be used to calculate the sensor’s absolute orientation. The MinIMU-9 v5 board includes a voltage regulator and a level-shifting circuit that allow operation from 2.5 to 5.5 V, and the pin spacing makes it easy to use with standard solderless breadboards and perfboards.

STMicroelectronics LSM6DS33

The LSM6DS33 is a system-in-package featuring a 3D digital accelerometer and a 3D digital gyroscope performing at 1.25 mA in high-performance mode and enabling always-on low-power features for an optimal motion experience for the consumer. ST’s family of MEMS sensor modules leverages the robust and mature manufacturing processes already used for the production of micromachined accelerometers and gyroscopes.

STMicroelectronics LIS3MDL

The LIS3MDL is an ultra-low-power high-performance three-axis magnetic sensor. The LIS3MDL has user-selectable full scales of gauss. The self-test capability allows the user to check the functioning of the sensor in the final application. The device may be configured to generate interrupt signals for magnetic field detection.

DL2108Mk10

1 x SparkFun Thing Plus – ESP32 WROOM
1 x Adafruit SHARP Memory Display
1 x Adalogger FeatherWing – RTC + SD
1 x SparkFun Environmental Combo CCS811/BME280 (Qwiic)
1 x Pololu MinIMU-9
1 x CR1220 3V Lithium Coin Cell Battery
1 x 32Gb microSD Card
1 x LED Green
1 x Rocker Switch – SPST (Round)
1 x Terminal Block Breakout FeatherWing
1 x Lithium Ion Battery – 850mAh
1 x GPS Receiver – GP-20U7
1 x Rotary Switch – 10 Position
1 x SparkFun Rotary Switch – 10 Position
1 x Black Knob
2 x Spring Terminals – PCB Mount (6-Pin)
2 x Breadboard Solderable
12 x 1K Ohm
1 x FeatherWing Proto
1 x Acrylic Orange 5.75 inches x 3.75 inches x 1/8 inch
1 x Acrylic Black 5.75 inches x 3.75 inches x 1/8 inch
54 x Screw – 4-40
19 x Standoff – Metal 4-40 – 3/8″
8 x Standoff – Metal 4-40 – 1″
1 x SparkFun Cerberus USB Cable

SparkFun Thing Plus – ESP32 WROOM

SCK – Digital 13
MSI – Digital 12
SS0 – Digital 27
GRX – Digital 16
GTX – Digital 17
SDA – Digital 23
SDL – Digital 22
SCK – Digital 5
MSO – Digital 19
MSI – Digital 18
SS1 – Digital 33
LEG – Digital 21
SW0 – Digital 32
ROT – Analog A0
VIN – +3.3V
GND – GND

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DL2108Mk10p.ino

/* 
***** Don Luc Electronics © *****
Software Version Information
Project #19: Time - 9DoF IMU - Mk09
08-10
DL2108Mk10p.ino
1 x SparkFun Thing Plus - ESP32 WROOM
1 x Adafruit SHARP Memory Display
1 x Adalogger FeatherWing - RTC + SD
1 x SparkFun Environmental Combo CCS811/BME280 (Qwiic)
1 x Pololu MinIMU-9
1 x CR1220 3V Lithium Coin Cell Battery
1 x 32Gb microSD Card
1 x LED Green
1 x Rocker Switch - SPST (Round)
1 x Terminal Block Breakout FeatherWing
1 x Lithium Ion Battery - 850mAh
1 x GPS Receiver - GP-20U7
1 x Rotary Switch - 10 Position
1 x SparkFun Rotary Switch – 10 Position
1 x Black Knob
2 x Spring Terminals - PCB Mount (6-Pin)
2 x Breadboard Solderable
12 x 1K Ohm
1 x FeatherWing Proto
1 x Acrylic Orange 5.75 inches x 3.75 inches x 1/8 inch
1 x Acrylic Black 5.75 inches x 3.75 inches x 1/8 inch
54 x Screw - 4-40
19 x Standoff - Metal 4-40 - 3/8"
8 x Standoff - Metal 4-40 - 1"
1 x SparkFun Cerberus USB Cable
*/

// Include the Library Code
// EEPROM Library to Read and Write EEPROM with Unique ID for Unit
#include "EEPROM.h"
// Wire
#include <Wire.h>
// SHARP Memory Display
#include <Adafruit_SharpMem.h>
#include <Adafruit_GFX.h>
// Date and time RTC
#include "RTClib.h"
// GPS Receiver
#include <TinyGPS++.h>
// ESP32 Hardware Serial
#include <HardwareSerial.h>
// SD Card
#include "FS.h"
#include "SD.h"
#include "SPI.h"
// SparkFun CCS811 - eCO2 & tVOC
#include <SparkFunCCS811.h>
// SparkFun BME280 - Humidity, Temperature, Altitude and Barometric Pressure
#include <SparkFunBME280.h>
// 9DoF IMU
// STMicroelectronics LSM6DS33
#include <LSM6.h>
// STMicroelectronics LIS3MDL
#include <LIS3MDL.h>

// SHARP Memory Display
#define SHARP_SCK  13
#define SHARP_MOSI 12
#define SHARP_SS   27
// Set the size of the display here, e.g. 144x168!
Adafruit_SharpMem display(SHARP_SCK, SHARP_MOSI, SHARP_SS, 144, 168);
// The currently-available SHARP Memory Display (144x168 pixels)
// requires > 4K of microcontroller RAM; it WILL NOT WORK on Arduino Uno
// or other <4K "classic" devices.
#define BLACK 0
#define WHITE 1

// Date and Time
// PCF8523 Precision RTC 
RTC_PCF8523 rtc;
// Date
String dateRTC = "";
// Time
String timeRTC = "";

// ESP32 HardwareSerial
HardwareSerial tGPS(2);

// GPS Receiver
#define gpsRXPIN 16
// This one is unused and doesnt have a conection
#define gpsTXPIN 17
// The TinyGPS++ object
TinyGPSPlus gps;
// Latitude
float TargetLat;
// Longitude
float TargetLon;
// GPS Date, Time, Speed, Altitude
// GPS Date
String TargetDat;
// GPS Time
String TargetTim;
// GPS Speeds M/S
String TargetSMS;
// GPS Speeds Km/h
String TargetSKH;
// GPS Altitude Meters
String TargetALT;
// GPS Status
String GPSSt = "";

// Rotary Switch - 10 Position
// Number 1 => 10
int iRotNum = A0;
// iRotVal - Value 
int iRotVal = 0;
// Number
int z = 0;

// MicroSD Card
const int chipSelect = 33;
String zzzzzz = "";

// LED Green
int iLEDGreen = 21;

// Rocker Switch - SPST (Round)
int iSS1 = 32;
// State
int iSS1State = 0;

// SparkFun CCS811 - eCO2 & tVOC
// Default I2C Address
#define CCS811_ADDR 0x5B 
CCS811 myCCS811(CCS811_ADDR);
// eCO2
float CCS811CO2 = 0;
// TVOC
float CCS811TVOC = 0;

// SparkFun BME280 - Temperature, Humidity, Altitude and Barometric Pressure
BME280 myBME280;
// Temperature Celsius
float BMEtempC = 0;
// Humidity
float BMEhumid = 0;
// Altitude Meters
float BMEaltitudeM = 0;
// Barometric Pressure
float BMEpressure = 0;

// 9DoF IMU
// STMicroelectronics LSM6DS33
LSM6 imu;
// // Accelerometer and Gyroscopes
// Accelerometer
int imuAX;
int imuAY;
int imuAZ;
// Gyroscopes
int imuGX;
int imuGY;
int imuGZ;
// STMicroelectronics LIS3MDL
LIS3MDL mag;
// Magnetometer
int magX;
int magY;
int magZ;

// Software Version Information
// EEPROM Unique ID Information
#define EEPROM_SIZE 64
String uid = "";
// Version
String sver = "19-09";

void loop()
{
     
  // Dates and Time
  isRTC();

  // isGPS
  isGPS();

  // SparkFun BME280 - Temperature, Humidity, Altitude and Barometric Pressure
  isBME280();

  // SparkFun CCS811 - eCO2 & tVOC
  isCCS811();

  // Accelerometer and Gyroscopes
  isIMU();

  // Magnetometer
  isMag();

  // Rotary Switch
  isRot();

  // Slide Switch
  // Read the state of the iSS1 value
  iSS1State = digitalRead(iSS1);
  
  // If it is the Slide Switch State is HIGH
  if (iSS1State == HIGH) {

    // iLEDGreen HIGH
    digitalWrite(iLEDGreen,  HIGH );
    
    // MicroSD Card
    isSD();

  } else {

    // iLEDGreen LOW
    digitalWrite(iLEDGreen,  LOW );
  
  }

  delay( 1000 );
 
}

getAccelGyro.ino

// Accelerometer and Gyroscopes
// Setup IMU
void setupIMU() {

  // Setup IMU
  imu.init();
  // Default
  imu.enableDefault();
  
}
// Accelerometer and Gyroscopes
void isIMU() {

  // Accelerometer and Gyroscopes
  imu.read();
  // Accelerometer x, y, z
  imuAX = imu.a.x;
  imuAY = imu.a.y;
  imuAZ = imu.a.z;
  // Gyroscopes x, y, z
  imuGX = imu.g.x;
  imuGY = imu.g.y;
  imuGZ = imu.g.z;

}

getBME280.ino

// SparkFun BME280 - Temperature, Humidity, Altitude and Barometric Pressure
// isBME280 - Temperature, Humidity, Altitude and Barometric Pressure
void isBME280(){

  // Temperature Celsius
  BMEtempC = myBME280.readTempC();
  // Humidity
  BMEhumid = myBME280.readFloatHumidity();
  // Altitude Meters
  BMEaltitudeM = (myBME280.readFloatAltitudeMeters(), 2);
  // Barometric Pressure
  BMEpressure = myBME280.readFloatPressure();
  
}

getCCS811.ino

// CCS811 - eCO2 & tVOC
// isCCS811 - eCO2 & tVOC
void isCCS811(){

  // This sends the temperature & humidity data to the CCS811
  myCCS811.setEnvironmentalData(BMEhumid, BMEtempC);

  // Calling this function updates the global tVOC and eCO2 variables
  myCCS811.readAlgorithmResults();

  // eCO2 Concentration
  CCS811CO2 = myCCS811.getCO2();
  
  // tVOC Concentration
  CCS811TVOC = myCCS811.getTVOC();
  
}

getDisplay.ino

// SHARP Memory Display
// SHARP Memory Display - UID
void isDisplayUID() {

    // Text Display 
    // Clear Display
    display.clearDisplay();
    display.setRotation(4);
    display.setTextSize(3);
    display.setTextColor(BLACK);
    // Don Luc Electronics
    display.setCursor(0,10);
    display.println( "Don Luc" );
    display.setTextSize(2);
    display.setCursor(0,40);
    display.println( "Electronics" );
    // Version
    //display.setTextSize(3);
    display.setCursor(0,70);
    display.println( "Version" );
    //display.setTextSize(2);
    display.setCursor(0,95);   
    display.println( sver );
    // EEPROM
    display.setCursor(0,120);
    display.println( "EEPROM" );
    display.setCursor(0,140);   
    display.println( uid );
    // Refresh
    display.refresh();
    delay( 100 );
    
}
// Display Date
void isDisplayDate() {

    // Text Display Date
    // Clear Display
    display.clearDisplay();
    display.setRotation(4);
    display.setTextSize(2);
    display.setTextColor(BLACK);
    // Date
    display.setCursor(0,5);
    display.println( "Date" );
    display.setCursor(0,30);
    display.println( dateRTC );
    // Time
    display.setCursor(0,55);
    display.println( "Time" );
    display.setCursor(0,75);
    display.println( timeRTC );
    // Refresh
    display.refresh();
    delay( 100 );

}
// Display GPS
void isDisplayGPS() {

    // Text Display Date
    // Clear Display
    display.clearDisplay();
    display.setRotation(4);
    display.setTextSize(2);
    display.setTextColor(BLACK);
    // GPS Status
    display.setCursor(0,5);
    display.print( "GPS: " );
    display.println( GPSSt );
    // Target Latitude
    display.setCursor(0,25);
    display.println( "Latitude" );
    display.setCursor(0,45);
    display.println( TargetLat );
    // Target Longitude
    display.setCursor(0,65);
    display.println( "Longitude" );
    display.setCursor(0,90);
    display.println( TargetLon );
    // Refresh
    display.refresh();
    delay( 100 );

}
// GPS Date, Time, Speed, Altitude
void isDisplayGPSDate() {

    // Text Display Date
    // Clear Display
    display.clearDisplay();
    display.setRotation(4);
    display.setTextSize(2);
    display.setTextColor(BLACK);
    // GPS
    display.setCursor(0,5);
    display.println( "GPS" );
    // Date
    display.setCursor(0,30);
    display.println( TargetDat );
    // Time
    display.setCursor(0,55);
    display.println( TargetTim );
    // Speed
    display.setCursor(0,75);
    display.print( "M/S: " );
    display.println( TargetSMS );
    display.setCursor(0,95);
    display.print( "Km/h: " );
    display.println( TargetSKH );
    display.setCursor(0,115);
    display.print( "Alt: " );
    display.println( TargetALT );
    // Refresh
    display.refresh();
    delay( 100 );

}
// Display SparkFun BME280 - Temperature, Humidity, Altitude and Barometric Pressure
void isDisplayBME280() {

     // Text Display BME280
    // Clear Display
    display.clearDisplay();
    display.setRotation(4);
    display.setTextSize(2);
    display.setTextColor(BLACK);
    // Temperature Celsius
    display.setCursor(0,5);
    display.println( "Temperature" );
    display.setCursor(0,25);
    display.print( BMEtempC );
    display.println( " C" );
    // Humidity
    display.setCursor(0,45);
    display.println( "Humidity" );
    display.setCursor(0,65);
    display.print( BMEhumid );
    display.println( "%" );
    // Altitude Meters
    display.setCursor(0,85);
    display.println( "Altitude M" );
    display.setCursor(0,105);
    display.print( BMEaltitudeM );
    display.println( " m" );
    // Pressure
    display.setCursor(0,125);    
    display.println( "Barometric" );
    display.setCursor(0,145);
    display.print( BMEpressure );
    display.println( "Pa" );
    // Refresh
    display.refresh();
    delay( 100 );

}
// Display CCS811 - eCO2 & tVOC
void isDisplayCCS811() {

    // Text Display CCS811
    // Clear Display
    display.clearDisplay();
    display.setRotation(4);
    display.setTextSize(2);
    display.setTextColor(BLACK);
    // eCO2 Concentration
    display.setCursor(0,5);
    display.println( "eCO2" );
    display.setCursor(0,25);
    display.print( CCS811CO2 );
    display.println( " ppm" );
    // tVOC Concentration
    display.setCursor(0,55);
    display.println( "tVOC" );
    display.setCursor(0,75);
    display.print( CCS811TVOC );
    display.println( " ppb" );
    // Refresh
    display.refresh();
    delay( 100 );

}
// Display Accelerometer and Gyroscopes
void isDisplayAccGyr() {

    // Text Display Accelerometer and Gyroscopes
    // Clear Display
    display.clearDisplay();
    display.setRotation(4);
    display.setTextSize(2);
    display.setTextColor(BLACK);
    // Accelerometer
    display.setCursor(0,5);
    display.println( "Accelero" );
    display.setCursor(0,25);
    display.print( "X: " );
    display.println( imuAX );
    display.setCursor(0,45);
    display.print( "Y: " );
    display.println( imuAY );
    display.setCursor(0,65);
    display.print( "Z: " );
    display.println( imuAZ );
    display.setCursor(0,85);
    display.println( "Gyro" );
    display.setCursor(0,105);
    display.print( "X: " );
    display.println( imuGX );
    display.setCursor(0,125);
    display.print( "Y: " );
    display.println( imuGY );
    display.setCursor(0,145);
    display.print( "Z: " );
    display.println( imuGZ );
    // Refresh
    display.refresh();
    delay( 100 );
      
}
// Display Magnetometer
void isDisplayMag() {

    // Text Display Magnetometer
    // Clear Display
    display.clearDisplay();
    display.setRotation(4);
    display.setTextSize(2);
    display.setTextColor(BLACK);
    // Magnetometer
    display.setCursor(0,5);
    display.println( "Magnetometer" );
    display.setCursor(0,25);
    display.print( "X: " );
    display.println( magX );
    display.setCursor(0,45);
    display.print( "Y: " );
    display.println( magY );
    display.setCursor(0,65);
    display.print( "Z: " );
    display.println( magZ );
    // Refresh
    display.refresh();
    delay( 100 );
      
}
// Display Z
void isDisplayZ() {
    // Text Display Z
    // Clear Display
    display.clearDisplay();
    display.setRotation(4);
    display.setTextSize(3);
    display.setTextColor(BLACK);
    // Z
    display.setCursor(0,10);
    display.print( "Z: " );
    display.println( z );
    // Refresh
    display.refresh();
    delay( 100 );
}

getEEPROM.ino

// EEPROM
// isUID EEPROM Unique ID
void isUID()
{
  
  // Is Unit ID
  uid = "";
  for (int x = 0; x < 5; x++)
  {
    uid = uid + char(EEPROM.read(x));
  }
  
}

getGPS.ino

// GPS Receiver
// Setup GPS
void setupGPS() {

  // Setup GPS
  tGPS.begin(  9600 , SERIAL_8N1 , gpsRXPIN , gpsTXPIN );
  
}
// isGPS
void isGPS(){

  // Receives NEMA data from GPS receiver
  // This sketch displays information every time a new sentence is correctly encoded
  while ( tGPS.available() > 0)
    
    if (gps.encode( tGPS.read() ))
    {
     
       // GPS Vector Pointer Target
       displayInfo();
       // GPS Date, Time, Speed, Altitude
       displayDTS();
       
    }
  
  if (millis() > 5000 && gps.charsProcessed() < 10)
  {
   
     while(true);
    
  }

}
// GPS Vector Pointer Target
void displayInfo(){

  // Location
  if (gps.location.isValid())
  {
    
     // Latitude
     TargetLat = gps.location.lat();
     // Longitude
     TargetLon = gps.location.lng();
     // GPS Status 2
     GPSSt = "Yes";
    
  }
  else
  {

     // GPS Status 0
     GPSSt = "No";
    
  }

}
// GPS Date, Time, Speed, Altitude
void displayDTS(){

  // Date
  TargetDat = ""; 
  if (gps.date.isValid())
  {
    
     // Date
     // Year
     TargetDat += String(gps.date.year(), DEC);
     TargetDat += "/";
     // Month
     TargetDat += String(gps.date.month(), DEC);
     TargetDat += "/";
     // Day
     TargetDat += String(gps.date.day(), DEC);
    
  }

  // Time
  TargetTim = "";
  if (gps.time.isValid())
  {
    
     // Time
     // Hour
     TargetTim += String(gps.time.hour(), DEC);
     TargetTim += ":";
     // Minute
     TargetTim += String(gps.time.minute(), DEC);
     TargetTim += ":";
     // Secound
     TargetTim += String(gps.time.second(), DEC);
    
  }

  // Speed
  TargetSMS = "";
  TargetSKH = "";
  if (gps.speed.isValid())
  {
    
     // Speed
     // M/S
     int x = gps.speed.mps();
     TargetSMS = String( x, DEC);
     // Km/h
     int y = gps.speed.kmph();
     TargetSKH = String( y, DEC);

  }

  // Altitude
  TargetALT = "";
  if (gps.altitude.isValid())
  {
    
     // Altitude
     // Meters
     int z = gps.altitude.meters();
     TargetALT = String( z, DEC);

  }
  
}

getMagnetometer.ino

// Magnetometer
// Setup Magnetometer
void setupMag() {

  // Setup Magnetometer
  mag.init();
  // Default
  mag.enableDefault();
  
}
// Magnetometer
void isMag() {

  // Magnetometer
  mag.read();
  // Magnetometer x, y, z
  magX = mag.m.x;
  magY = mag.m.y;
  magZ = mag.m.z;
  
}

getRTC.ino

// Date & Time
// PCF8523 Precision RTC
void setupRTC() {

  // Date & Time
  // pcf8523 Precision RTC   
  if (! rtc.begin()) {
    while (1);
  }  
  
  if (! rtc.initialized()) {
    
    // Following line sets the RTC to the date & time this sketch was compiled
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
    // This line sets the RTC with an explicit date & time, for example to set
    // January 21, 2014 at 3am you would call:
    // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
    // rtc.adjust(DateTime(2021, 8, 18, 8, 48, 0));
    
  }
  
}
// Date and Time RTC PCF8523
void isRTC () {

  // Date and Time
  dateRTC = "";
  timeRTC = "";
  DateTime now = rtc.now();
  
  // Date
  // Year
  dateRTC = now.year(), DEC; 
  dateRTC = dateRTC + "/";
  // Month
  dateRTC = dateRTC + now.month(), DEC;
  dateRTC = dateRTC + "/";
  // Day
  dateRTC = dateRTC + now.day(), DEC;
  
  // Time
  // Hour
  timeRTC = now.hour(), DEC;
  timeRTC = timeRTC + ":";
  // Minute
  timeRTC = timeRTC + now.minute(), DEC;
  timeRTC = timeRTC + ":";
  // Second
  timeRTC = timeRTC + now.second(), DEC;
  
}

getRot.ino

// Rotary Switch
// isRot - iRotVal - Value
void isRot() {
  
  // Rotary Switch
  z = analogRead( iRotNum );
  
  // Rotary Switch - 10 Position
  // Number 1 => 10
  if ( z >= 3600 ) {

    // Z
    iRotVal = 10;
    
  } else if ( z >= 3200 ) {

    // Z
    iRotVal = 9;
    
  } else if ( z >= 2700 ) {

    // Z
    iRotVal = 8;
    
  } else if ( z >= 2400 ) {

    // Z
    iRotVal = 7;
    
  } else if ( z >= 2000 ) {

    // Z
    iRotVal = 6;
    
  } else if ( z >= 1600 ) {

    // Z
    iRotVal = 5;
    
  } else if ( z >= 1200 ) {

    // Z
    iRotVal = 4;
    
  } else if ( z >= 900 ) {

    // Z
    iRotVal = 3;
    
  } else if ( z >= 500 ) {

    // Z
    iRotVal = 2;
    
  } else {

    // Z
    iRotVal = 1;
    
  }

  // Range Value
  switch ( iRotVal ) {
    case 1:

      // Display Date, Time
      isDisplayDate();
       
      break;
    case 2:

      // Display GPS
      isDisplayGPS();
         
      break;
    case 3:

      // GPS Date, Time, Speed, Altitude
      //isDisplayGPSDate();
      
      break;  
    case 4:
      
      // GPS Display Date, Time, Speed
      isDisplayGPSDate();
      
      break;
    case 5:
      
      // Display SparkFun BME280 - Temperature, Humidity, Altitude and Barometric Pressure
      isDisplayBME280();
      
      break;
    case 6:
      
      // Display CCS811 - eCO2 & tVOC
      isDisplayCCS811();
      
      break;       
    case 7:

      // Accelerometer and Gyroscopes
      isDisplayAccGyr();
      
      break; 
    case 8:
         
      // Display Magnetometer
      isDisplayMag();
      
      break; 
    case 9:
      
      // Z
      isDisplayZ();
      
      break;
    case 10:

      // Z
      isDisplayZ();
      
      break;
  }
  
}

getSD.ino

// MicroSD Card
// MicroSD Setup
void setupSD() {

    // MicroSD Card
    pinMode( chipSelect , OUTPUT );
    if(!SD.begin( chipSelect )){
        ;  
        return;
    }
    
    uint8_t cardType = SD.cardType();

    // CARD NONE
    if(cardType == CARD_NONE){
        ; 
        return;
    }

    // SD Card Type
    if(cardType == CARD_MMC){
        ; 
    } else if(cardType == CARD_SD){
        ; 
    } else if(cardType == CARD_SDHC){
        ; 
    } else {
        ; 
    } 

    // Size
    uint64_t cardSize = SD.cardSize() / (1024 * 1024);
 
}
// MicroSD Card
void isSD() {

  zzzzzz = "";

  // EEPROM Unique ID|Version|Date|Time|GPS Status|Target Latitude|Target Longitude|GPS Date|GPS Time|GPS Speed M/S|GPS Speed Km/h|GPS Altitude
  //|Temperature Celsius|Humidity|Altitude Meters|Barometric Pressure|eCO2 Concentration|tVOC Concentration|Accelerometer X|Accelerometer Y|Accelerometer Z|
  //Gyroscopes X|Gyroscopes Y|Gyroscopes Z|Magnetometer X|Magnetometer Y|Magnetometer Z|\r
  zzzzzz = uid + "|" + sver + "|" + dateRTC + "|" + timeRTC + "|" + GPSSt + "|" + TargetLat + "|" + TargetLon + "|" + TargetDat + "|" + TargetTim + "|" + 
  TargetSMS + "|" + TargetSKH + "|" + TargetALT  + "|" + BMEtempC + "|" + BMEhumid + "|" + BMEaltitudeM + "|" + BMEpressure + "|" + CCS811CO2 + "|" 
  + CCS811TVOC + "|" + imuAX + "|" + imuAY + "|" + imuAZ + "|" + imuGX + "|" + imuGY + "|" + imuGZ + "|" + magX + "|" + magY + "|" + magZ + "|\r";

  // msg + 1
  char msg[zzzzzz.length() + 1];

  zzzzzz.toCharArray(msg, zzzzzz.length() + 1);

  // Append File
  appendFile(SD, "/espdata.txt", msg );
  
}
// List Dir
void listDir(fs::FS &fs, const char * dirname, uint8_t levels){
    
    // List Dir
    dirname;
    
    File root = fs.open(dirname);
    
    if(!root){
        return;
    }
    
    if(!root.isDirectory()){
        return;
    }

    File file = root.openNextFile();
    
    while(file){
        if(file.isDirectory()){
            file.name();
            if(levels){
                listDir(fs, file.name(), levels -1);
            }
        } else {
            file.name();
            file.size();
        }
        file = root.openNextFile();
    }
    
}
// Write File
void writeFile(fs::FS &fs, const char * path, const char * message){
    
    // Write File
    path;
    
    File file = fs.open(path, FILE_WRITE);
    
    if(!file){
        return;
    }
    
    if(file.print(message)){
        ;  
    } else {
        ;  
    }
    
    file.close();
    
}
// Append File
void appendFile(fs::FS &fs, const char * path, const char * message){
    
    // Append File
    path;
    
    File file = fs.open(path, FILE_APPEND);
    
    if(!file){
        return;
    }
    
    if(file.print(message)){
        ;  
    } else {
        ;  
    }
    
    file.close();
    
}

setup.ino

// Setup
void setup()
{
  
  // EEPROM Size
  EEPROM.begin(EEPROM_SIZE);
  
  // EEPROM Unique ID
  isUID();
  
  // GPS Receiver
  // Setup GPS
  setupGPS();

  // Set up I2C bus
  Wire.begin();

  // SparkFun BME280 - Temperature, Humidity, Altitude and Barometric Pressure
  myBME280.begin();
  
  // CCS811 - eCO2 & tVOC
  myCCS811.begin();
  
  // SHARP Display Start & Clear the Display
  display.begin();
  // Clear Display
  display.clearDisplay();

  // Date & Time RTC
  // PCF8523 Precision RTC
  isDisplayUID();
  
  // Setup RTC
  setupRTC();

  //MicroSD Card
  setupSD();

  // Initialize the LED Green
  pinMode(iLEDGreen, OUTPUT);

  // Slide Switch
  pinMode(iSS1, INPUT);

  // Setup IMU
  setupIMU();

  // Setup Magnetometer
  setupMag();

  delay( 5000 );
  
}

——

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