JustEncaseBLOG#5TestingPart2

skruglewicz

19 Feb 2022

TEST# 2 - Measure the Environment within the Waterproof Enclosure 1554H2GYCL

Description
- For this Test, I purchased two Grove Sensors from Seeed and used two of sensors from the supplied Grove starter Kit.
- I also purchased the Arduino MKR Connector Carrier from the Arduino Store. This is used to attach the sender MKR1 from the previous test and attach the groove sensor connectors.
- The List of components used in this test:
  - Arduino MKR Connector Carrier
    - The Arduino MKR CONNECTOR CARRIER provides Seeed Studio's Grove connectors to your MKR board.
    - This shield can allow you to build applications with different IoT connectivity's by simply changing the MKR board and with almost no changes to the code.
    - BUY it from the Arduino Store
  - Grove - Dust Sensor（PPD42NS）SKU 101020012
    - This Dust Sensor gives a good indication of the air quality in an environment by measuring the dust concentration.
    - The Particulate Matter level (PM level) in the air is measured by counting the Low Pulse Occupancy time (LPO time) in a given time unit. LPO time is proportional to PM concentration. This sensor can provide reliable data for air purifier systems; it is responsive to PM of diameter 1μm.
    - Buy it from Seeed
  - Grove - Water Sensor SKU 101020018
    - Grove - Water Sensor detects the presence of water using exposed PCB traces.
    - The sensor is made up of interlaced traces of Ground and Sensor signals.
    - The sensor traces are weakly pulled up using 1 MΩ resistor.
    - The resistor will pull the sensor trace value high until a drop of water shorts the sensor trace to the ground trace.
  - USB Ruggedized Charger for Power
    - The AdventureMax 10000mAh by MyCharge
    - splash resistant
    - drop resistant
    - dirt-proof
    - II had this charger lying around the house. I decided to use it to power the MKR WAN 1300.
  - Grove - Starter Kit Sensors
    - Grove - LCD RGB Backlight
      - The Grove - LCD RGB Backlight supports text display, using user-defined characters. It enables you to set the backlight color, using the simple and concise Grove interface. It uses I2C as the communication method with your Arduino.
      - This is a 16x2 LCD screen.
      - It is capable of displaying two rows of sixteen-character texts, supporting languages such as English and Japanese.
    - Grove – Temperature Sensor
      - the Grove - Temperature Sensor uses a thermistor which returns the ambient temperature.
      - The board then converts this voltage value measured by an analog input pin to a temperature.
      - The operating range is -40 to 125 degrees Celsius.
      - Wiki] Grove - Temperature Sensor

Wiring Diagram
- All the sensors mentioned in the previous section are connected to the Arduino Connector Carrier with a Groove Cable connected to the designated connectors.
- One end of the cable is attached to the Grove sensor and the other to the Grove connector on the Carrier.
  - The LCD Display is attached to the TWI ()I2C) connector
  - The TEMPRATURE sensor is attached to the analog A0 connector.
  - The DUST sensor is attached to the digital D4 connector
  - The WATER sensor is attached to the digital D2 connector
- The Arduino MKRWAN 1300 Is attached to the Connector Carrier in the relation shown below
  - For POWER, the AdventureMax 10000mAh is attached to the USB connector on the MKRWAN 1300
  - The LoRa Antenna is attached to the antenna connector on the MKRWAN 1300
- BLOCK DIGARAM
  - Here is a diagram of components:
  - THE BUILD
    - Carrier Connector and the Attached components

SOFTWARE DESIGN

Libraries

rgb_lcd.h
- used for the LCD
- README.md
MKRWAN.h
- used for Lora communications .
- Installed by the Arduino IDE Library Manger
LoRa.h
- the library used for sending and receiving data using LoRa radios.
- GitHub - sandeepmistry/arduino-LoRa: An Arduino library for sending and receiving data using LoRa radios.
Wire.h
- This library allows you to communicate with I2C / TWI devices.
- It is needed by the Grove LCD Display

Arduino Sketches

Three MCU"s, Three Sketches to get the the data through.
The next Three section will describe the 3 sketches used to get the data thru and onto the Arduino IoT cloud.

LoRa SENDER - MKR_LoRa_Sender_E2.ino on MKR1

This sketch is Uploaded to the MKR1 board in my design.
This Sketch, will be used to transmit LoRaWAN packets to the MKR2 LoRa Receiver board.
As described in the Design section above it will have 3 Grove sensors and 1 Grove LCD display connected to the Arduino MKR Connector Carrier.
a MKR WN 1300 (MKR1) is attached to the Carrier.
one by one, each sensor is read.
- after each sensor is read, a LoRa a packet with the sensor value is sent
- In the packet send function the value is displayed on the LCD display.

CODE- MKR_LoRa_Sender_E2.ino

LoRa Receiver - MKR_LoRa_Reeiver_UnitTest.ino on MKR2

This Sketch, will be used to receive LoRaWAN packets.
It is the same code that I used in Test#1, but I have included here for brevity
The packets will contain telemetry data that will be sent over a serial line to the Nano 33 IoT.

CODE - MKR_LoRa_Reeiver_UnitTest.ino

Sending Data to the Arduino IoT Cloud

This sketch sends data to the IoT Cloud Dashboard
It runs on the Nano 33 IoT board and connects via a WiFi connection.
The sketch, is Auto Generated when you initially create a thing connected to a device on the Arduino IoT cloud
NOTE: the Nano board script is generated automatically when creating a new Thing on the Arduino IoT cloud as described in the online tutorial
- Getting started with the Arduino IoT Cloud
Here is my Thing on the Arduino Cloud with the variables defined.
The sketch is generated on the sketch Tab as described below.
Here is a screenshot of the sketch generated to send data to the thing that I created on the IoT cloud.

I then added my code to this sketch to receive serial data, parse the packet to extract the value and set the value to the proper variable
The variable is then sent to the Thing and onto the Dashboard.
Here is the entire sketch that will run on the Nano 33 IoT:
Here is a screenshot of the Serial Monitor tab on the Arduino CLoud showing the Serial.print() calls in the program running on the Nano 33 IoT.
And Finally, here is the dashboard showing the Variables.
- On the Phone

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Blog#4 Testing Part 1 (Case Enclosure Reliability Monitor)	Addendum BLOG A Testing

Parents

skruglewicz over 3 years ago

CODE- MKR_LoRa_Sender_E2.ino

CODE HAS MOVED TO COMMENTS BELOW

/*
MKR_LoRa_SENDER_InTemp
This sketch will get the temprture from a DS18B20 Temperature Sensor attached to the MKR WAN 1300 
Each time the loop runs, we will send a "packet" containing the message "InTemp:<temp>
the value of <temp> will contain the current tempreture from the sensor
The packet will be sent 

1-20-2020 Added OLED Adafruit_SSD1306 support.

*/

// MKRWAN - Version: 1.0.15
#include <MKRWAN.h>

#include <SPI.h>
#include <LoRa.h>
#include <Wire.h>
#include "rgb_lcd.h"

// Grove LCD DISPLAY
rgb_lcd lcd;      //instantiate lcd Object

// Grove TEMPERATURE Sensor
const int pinTemp = A0;      // pin of temperature sensor
float temperature;
float TempF;                 // tempreture in ferienheight
int B=3975;                  // B value of the thermistor
float resistance;

//Grove WATER Sensor
#define WATER_SENSOR 2
String WaterStatus;

// Grove Dust Sensor 
int pin = 4;
unsigned long duration;
unsigned long starttime;
unsigned long sampletime_ms = 30000;//sampe 30s ;
unsigned long lowpulseoccupancy = 0;
float ratio = 0;
float concentration = 0;
float DustStatus;

//DISPLAY STRING
void Display(String title,String message){
// display title and message on the LCD display
// Put title on the 1st line 
// put message on the 2nd line
  
  //DISPLAY TITLE
  // set the cursor to (0,0):
  lcd.setCursor(0, 0);
  lcd.print(title);
  lcd.print(" . . . . . . . .");
  delay(2000);
 
  //DISPLAY MESSAGE - on a scrolling message on the 2nd line
  // set the cursor to (16,1):
  lcd.setCursor(16,1);
  // set the display to automatically scroll:
  lcd.autoscroll();
  lcd.print(message);
  delay(2000);

  //CLEAN UP
  // turn off automatic scrolling
  lcd.noAutoscroll();
  // clear screen for the next Message
  lcd.clear();
}

void setup() {
  
  // Grove LCD DISPLAY SECTION
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);

  // LoRa INIT SECTION
  //SHUT OFF SERIAL
  //  Serial.begin(9600);
  //  Serial.println("LoRa Sender");
  Display("LoRa Sender","Started...");
  if (!LoRa.begin(915E6)) {
    while(1){
      //SHUT OFF SERIAL
      Serial.println("Starting LoRa failed!");
      Display("Starting LoRa ","failed!");
    }  
  }
  
  //Grove TEMPERATURE 
    pinMode(A0,INPUT);      //Setting the A0 pin as input pin to take data from the temperature sensor 

  //Grove WATER Sensor
  pinMode(WATER_SENSOR, INPUT); 

  // Grove Dust Sensor 
  pinMode(pin,INPUT);
  starttime = millis();//get the current time;

}



// SEND LORA PACKET
void SendPacket(String type, String value){
  String tuple;
  tuple = String(type) + String(value);
  
  //display the packet contents
  Display("Sending packet: ", tuple );
  //Display(type);
  //Display(value);
  
  // send packet
  LoRa.beginPacket();
  LoRa.print(type);
  LoRa.print(value);
  LoRa.endPacket();
}

//GET THE WATER DETECT VALUE  WET/DRY 0/1
String GetWaterStatus(){
  String stat;
  int val;
  val = digitalRead(WATER_SENSOR);
  
  if (val == 0){
    stat = "WET";
  }
  if (val == 1){
    stat = "DRY";
  }
//  if ((val != 0) || (val != 1) ){
//    stat = "Water Sensor ERROR";
//  }  
  return stat;
}

//GET DUST PARTICLE CONCENTRATION
float GetDustParticle(){
  bool finished = false;
  
  do{
    
      duration = pulseIn(pin, LOW);
      lowpulseoccupancy = lowpulseoccupancy+duration;
   
      if ((millis()-starttime) > sampletime_ms)//if the sampel time == 30s
      {
          ratio = lowpulseoccupancy/(sampletime_ms*10.0);  // Integer percentage 0=>100
          concentration = 1.1*pow(ratio,3)-3.8*pow(ratio,2)+520*ratio+0.62; // using spec sheet curve
          
          if (lowpulseoccupancy > 0)
          {
            Serial.print(lowpulseoccupancy);
            Serial.print(",");
            Serial.print(ratio);
            Serial.print(",");
            Serial.println(concentration);
          }
          
          lowpulseoccupancy = 0;
          starttime = millis();
          finished = true;
      }
  } while (!finished);

  return concentration;
    
}

//GET THE CURRENT Grove Sensor TEMPERATURE
float GetTemp(){
  
  int val = analogRead(pinTemp);                               // get analog value
  resistance=(float)(1023-val)*10000/val;                      // get resistance
  temperature=1/(log(resistance/10000)/B+1/298.15)-273.15;     // calc temperature in celsius
  TempF = (temperature * 9/5) + 32;                            // calc temp in ferenheight  
                                
  return TempF;
}

void loop() {

  //get the current Temperature
  TempF = GetTemp();
  //SEND THE PACKET
  
  SendPacket("Temp:",String(TempF));

  //get the water status
  WaterStatus = GetWaterStatus();
  SendPacket("Water:",WaterStatus);

  // get the dust particle status - Concentration
  DustStatus = GetDustParticle();
  SendPacket("Dust:",String(DustStatus)); 
 
  //delay(5000);
}

Generated Sketch to run on the Nano 33 IoT
CODE HAS MOVED TO COMMENTS BELOW :

Comment

skruglewicz over 3 years ago

CODE- MKR_LoRa_Sender_E2.ino

CODE HAS MOVED TO COMMENTS BELOW

/*
MKR_LoRa_SENDER_InTemp
This sketch will get the temprture from a DS18B20 Temperature Sensor attached to the MKR WAN 1300 
Each time the loop runs, we will send a "packet" containing the message "InTemp:<temp>
the value of <temp> will contain the current tempreture from the sensor
The packet will be sent 

1-20-2020 Added OLED Adafruit_SSD1306 support.

*/

// MKRWAN - Version: 1.0.15
#include <MKRWAN.h>

#include <SPI.h>
#include <LoRa.h>
#include <Wire.h>
#include "rgb_lcd.h"

// Grove LCD DISPLAY
rgb_lcd lcd;      //instantiate lcd Object

// Grove TEMPERATURE Sensor
const int pinTemp = A0;      // pin of temperature sensor
float temperature;
float TempF;                 // tempreture in ferienheight
int B=3975;                  // B value of the thermistor
float resistance;

//Grove WATER Sensor
#define WATER_SENSOR 2
String WaterStatus;

// Grove Dust Sensor 
int pin = 4;
unsigned long duration;
unsigned long starttime;
unsigned long sampletime_ms = 30000;//sampe 30s ;
unsigned long lowpulseoccupancy = 0;
float ratio = 0;
float concentration = 0;
float DustStatus;

//DISPLAY STRING
void Display(String title,String message){
// display title and message on the LCD display
// Put title on the 1st line 
// put message on the 2nd line
  
  //DISPLAY TITLE
  // set the cursor to (0,0):
  lcd.setCursor(0, 0);
  lcd.print(title);
  lcd.print(" . . . . . . . .");
  delay(2000);
 
  //DISPLAY MESSAGE - on a scrolling message on the 2nd line
  // set the cursor to (16,1):
  lcd.setCursor(16,1);
  // set the display to automatically scroll:
  lcd.autoscroll();
  lcd.print(message);
  delay(2000);

  //CLEAN UP
  // turn off automatic scrolling
  lcd.noAutoscroll();
  // clear screen for the next Message
  lcd.clear();
}

void setup() {
  
  // Grove LCD DISPLAY SECTION
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);

  // LoRa INIT SECTION
  //SHUT OFF SERIAL
  //  Serial.begin(9600);
  //  Serial.println("LoRa Sender");
  Display("LoRa Sender","Started...");
  if (!LoRa.begin(915E6)) {
    while(1){
      //SHUT OFF SERIAL
      Serial.println("Starting LoRa failed!");
      Display("Starting LoRa ","failed!");
    }  
  }
  
  //Grove TEMPERATURE 
    pinMode(A0,INPUT);      //Setting the A0 pin as input pin to take data from the temperature sensor 

  //Grove WATER Sensor
  pinMode(WATER_SENSOR, INPUT); 

  // Grove Dust Sensor 
  pinMode(pin,INPUT);
  starttime = millis();//get the current time;

}



// SEND LORA PACKET
void SendPacket(String type, String value){
  String tuple;
  tuple = String(type) + String(value);
  
  //display the packet contents
  Display("Sending packet: ", tuple );
  //Display(type);
  //Display(value);
  
  // send packet
  LoRa.beginPacket();
  LoRa.print(type);
  LoRa.print(value);
  LoRa.endPacket();
}

//GET THE WATER DETECT VALUE  WET/DRY 0/1
String GetWaterStatus(){
  String stat;
  int val;
  val = digitalRead(WATER_SENSOR);
  
  if (val == 0){
    stat = "WET";
  }
  if (val == 1){
    stat = "DRY";
  }
//  if ((val != 0) || (val != 1) ){
//    stat = "Water Sensor ERROR";
//  }  
  return stat;
}

//GET DUST PARTICLE CONCENTRATION
float GetDustParticle(){
  bool finished = false;
  
  do{
    
      duration = pulseIn(pin, LOW);
      lowpulseoccupancy = lowpulseoccupancy+duration;
   
      if ((millis()-starttime) > sampletime_ms)//if the sampel time == 30s
      {
          ratio = lowpulseoccupancy/(sampletime_ms*10.0);  // Integer percentage 0=>100
          concentration = 1.1*pow(ratio,3)-3.8*pow(ratio,2)+520*ratio+0.62; // using spec sheet curve
          
          if (lowpulseoccupancy > 0)
          {
            Serial.print(lowpulseoccupancy);
            Serial.print(",");
            Serial.print(ratio);
            Serial.print(",");
            Serial.println(concentration);
          }
          
          lowpulseoccupancy = 0;
          starttime = millis();
          finished = true;
      }
  } while (!finished);

  return concentration;
    
}

//GET THE CURRENT Grove Sensor TEMPERATURE
float GetTemp(){
  
  int val = analogRead(pinTemp);                               // get analog value
  resistance=(float)(1023-val)*10000/val;                      // get resistance
  temperature=1/(log(resistance/10000)/B+1/298.15)-273.15;     // calc temperature in celsius
  TempF = (temperature * 9/5) + 32;                            // calc temp in ferenheight  
                                
  return TempF;
}

void loop() {

  //get the current Temperature
  TempF = GetTemp();
  //SEND THE PACKET
  
  SendPacket("Temp:",String(TempF));

  //get the water status
  WaterStatus = GetWaterStatus();
  SendPacket("Water:",WaterStatus);

  // get the dust particle status - Concentration
  DustStatus = GetDustParticle();
  SendPacket("Dust:",String(DustStatus)); 
 
  //delay(5000);
}

Generated Sketch to run on the Nano 33 IoT
CODE HAS MOVED TO COMMENTS BELOW :

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JustEncaseBLOG#5TestingPart2

Description

Wiring Diagram

SOFTWARE DESIGN

Libraries

Arduino Sketches

LoRa SENDER - MKR_LoRa_Sender_E2.ino on MKR1

LoRa Receiver - MKR_LoRa_Reeiver_UnitTest.ino on MKR2

Sending Data to the Arduino IoT Cloud