skruglewicz
Published

Edible Algae Growing Cycle Monitor

I've decided to come up with a system that will help grow Spirulina Algae in a self contained space.

IntermediateFull instructions providedOver 1 day414
Helium Award
IoT Into the Wild Contest for Sustainable Planet 2022
Edible Algae Growing Cycle Monitor

Things used in this project

Hardware components

Seeed Studio LoRaWAN Dev Kit
Seeed Studio LoRaWAN Dev Kit
×1
Grove - LoRa Radio 433MHz
Seeed Studio Grove - LoRa Radio 433MHz
×1
Grove starter kit plus for Intel Edison
Seeed Studio Grove starter kit plus for Intel Edison
×1
Grove - Relay
Seeed Studio Grove - Relay
×1

Software apps and online services

Edge Impulse Studio
Edge Impulse Studio
Seeed Studio Quick Start with SenseCAP K1100 - The Sensor Prototype Kit (Beta)
Getting Started with Seeed Studio LoRaWAN Dev Kit

Story

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Code

E5-light_exposure_main.ino

Arduino
Implementation of the light exposure firmware used to maintain the ideal light exposure to grow the spirulina.
#include <Arduino.h>
#include "disk91_LoRaE5.h"
#include "RTC_SAMD51.h"
#include "DateTime.h"
#include"TFT_eSPI.h"

TFT_eSPI tft;     // TFY object
RTC_SAMD51 rtc;   //RTC OBJECT

int x = 0; //global used to count x pixels and increment by 20

int sensorPin = 0;

Disk91_LoRaE5 lorae5(&Serial); // Where the AT command and debut traces are printed

#define Frequency DSKLORAE5_ZONE_US915
/*
Select your frequency band here.
DSKLORAE5_ZONE_EU868
DSKLORAE5_ZONE_US915
 */

// char deveui[] = "";
// char appeui[] = "";
// char appkey[] = "";

void display_line(String msg)
{
  static int16_t x; //global used to count x pixels and increment by 20

  char buffer[50];
  sprintf(buffer,"current screen x pixel:%d ",x);
  Serial.println(buffer);

  //check if this is the last line
  if (x == 240)
  {
    tft.fillScreen(TFT_BLACK); //Black background
    tft.drawRect( 0,2,320,240,TFT_GREEN);
    x=0;
  } 
  tft.drawString(msg, 2, x); 
  x = x + 20;
}

void data_decord(int val, uint8_t data[2])
{ 
  data[0] = val >> 8 & 0xFF;
  data[1] = val & 0xFF;
}

void SendValue(int val)
{
  static uint8_t data[2] = { 0x00 };  //Use the data[] to store the values of the sensors
  
  //print the value to send
  char buffer[50];
  sprintf(buffer,"Value To Send: %d ",val);
  Serial.println(buffer);
  display_line(buffer);

  data_decord(val, data);

  if ( lorae5.send_sync(              //Sending the sensor values out
        8,                            // LoRaWan Port
        data,                         // data array
        sizeof(data),                 // size of the data
        false,                        // we are not expecting a ack
        7,                            // Spread Factor
        14                            // Tx Power in dBm
       ) 
  ) {
      Serial.println("Uplink done");
      display_line("Uplink done");

      if ( lorae5.isDownlinkReceived() ) {
        Serial.println("A downlink has been received");
        display_line("A downlink has been received");
        if ( lorae5.isDownlinkPending() ) {
          Serial.println("More downlink are pending");
          display_line("More downlink are pending");
        }
      }
  }else{
    Serial.println("Uplink FAILED.. DATA not sent");
    display_line("Uplink FAILED.. DATA not sent");
  }
}
void LightON()
{
  digitalWrite(0, HIGH); //on
  display_line("Light Set: ON");
}

void LightOFF()
{
  digitalWrite(0, LOW);  // off
  display_line("Light Set: OFF");
}

bool IsLightON()
{
  int light = analogRead(WIO_LIGHT);  //Get the Wio Terminal light value.
 
  //print the light value
  char buffer[50];
  sprintf(buffer,"Light Value: %d ",x);
  Serial.println(buffer);
  display_line(buffer);

// send the current light value
  SendValue(light);
  
  if (light < 100) {return false;}
  else {return true;}
}


void setup(void)
{ 
  rtc.begin();

  //TFT    
  tft.begin();
  tft.setRotation(3);
  tft.setTextSize(2); 

  // RTC setup
  DateTime now = DateTime(F(__DATE__), F(__TIME__));
  Serial.println("adjust time!");
  rtc.adjust(now);
 
  pinMode(0, OUTPUT); 
  Serial.begin(9600);
  uint32_t start = millis();
  while ( !Serial && (millis() - start) < 1500 );  // Open the Serial Monitor to get started or wait for 1.5"
  
  // init the library, search the LORAE5 on port 1 LEFT Grove port
  if ( ! lorae5.begin(DSKLORAE5_SWSERIAL_WIO_P1) ) {
    Serial.println("LoRa E5 Init Failed");
    display_line("LoRa E5 Init Failed");
    while(1); 
  }  

  // Setup the LoRaWan Credentials
  if ( ! lorae5.setup(
        Frequency,
        deveui,
        appeui,
        appkey
     ) ){
    Serial.println("LoRa E5 Setup Failed");
    display_line("LoRa E5 Setup Failed");
 
    while(1);         
  }
}
 

void loop(void)
{
// get the current time and get the currtent Hour and Minute from the rtc object
DateTime now = rtc.now();
DateTime hr = now.hour();
DateTime mins = now.minute();


Serial.print("current time:   ");
Serial.print(now.hour(), DEC);
Serial.print(':');
Serial.println(now.minute(), DEC);


//sprintf( time )
char buffer[50];
sprintf(buffer,"current time: %d:%d",hr,mins); ///?????
String current_Time = String(buffer);
display_line(current_Time);
Serial.println(current_Time);


//Set up some 
tft.fillScreen(TFT_BLACK); //Black background
tft.drawRect( 0,2,320,240,TFT_RED);
tft.setTextSize(1);   
int16_t x = 0;

display_line("Starting - on the next hour" );


// // start on the next hour
// // loop every min until mins = 00
//   if ( mins != zeroMins ) {
//     delay(1000*60);
//     while(1); 
//   }  

// Check if it's in the proper time range (between 7pm and 10pm every night.)  else wait for an hour
if ((hr >= 19 or hr <= 10) and mins <= 45)
  {
    LightON();
    //SendValue(HIGH);

    //Check if the light is actually ON If not, then send a message to the display (for now, but I could sent an alert in the future)
    if ( ! IsLightON() ){   
      //Send a message to display "Light should be on But it is not"
      Serial.println('Light should be on But it is not');
      display_line("Light should be ON But it is not");
    } else {
      //Send a message to display "  OK the light is on 
      Serial.println('OK the light is on');
      display_line("OK the light is ON");
    }
    
    delay(2700000); // 45 minutes

    LightOFF();
    //SendValue(LOW);

    delay(900000);  // 15 minutes 

  } else
  {
    Serial.println('SLEEP for an HOUR');
    display_line("Sleep for 45 minutes");
    delay(2700000); // 45 minutes
    display_line("Sleep for 15 minutes");
    delay(900000);  // 15 minutes 
  }

}

E5-light_exposure_Test.ino

Arduino
This will test if my design is working to "Maintain the right Amount of light exposure"
#include <Arduino.h>
#include "disk91_LoRaE5.h"
#include "RTC_SAMD51.h"
#include "DateTime.h"

int sensorPin = 0;

Disk91_LoRaE5 lorae5(&Serial); // Where the AT command and debut traces are printed

#define Frequency DSKLORAE5_ZONE_US915
/*
Select your frequency band here.
DSKLORAE5_ZONE_EU868
DSKLORAE5_ZONE_US915
DSKLORAE5_ZONE_AS923_1
DSKLORAE5_ZONE_AS923_2
DSKLORAE5_ZONE_AS923_3
DSKLORAE5_ZONE_AS923_4
DSKLORAE5_ZONE_KR920
DSKLORAE5_ZONE_IN865
DSKLORAE5_ZONE_AU915
 */

// char deveui[] = "";
// char appeui[] = "";
// char appkey[] = "";


void data_decord(int val, uint8_t data[2])
{ 
  data[0] = val >> 8 & 0xFF;
  data[1] = val & 0xFF;
}

void SendValue(int val)
{
  static uint8_t data[2] = { 0x00 };  //Use the data[] to store the values of the sensors

  data_decord(val, data);

  if ( lorae5.send_sync(              //Sending the sensor values out
        8,                            // LoRaWan Port
        data,                         // data array
        sizeof(data),                 // size of the data
        false,                        // we are not expecting a ack
        7,                            // Spread Factor
        14                            // Tx Power in dBm
       ) 
  ) {
      Serial.println("Uplink done");

      if ( lorae5.isDownlinkReceived() ) {
        Serial.println("A downlink has been received");
        if ( lorae5.isDownlinkPending() ) {
          Serial.println("More downlink are pending");
        }
      }
  }else{
    Serial.println("Uplink FAILED.. DATA not sent");
  }
}
void LightON()
{
  digitalWrite(0, HIGH); //on
}

void LightOFF()
{
  digitalWrite(0, LOW);  // off
}

bool IsLightON()
{
  int light = analogRead(WIO_LIGHT);  //Get the Wio Terminal light value.
  Serial.print("Light Value: "); Serial.println(light);
  if (light < 100) {return false;}
  else {return true;}
}

RTC_SAMD51 rtc;   //RTC OBJECT

void setup(void)
{ 
    rtc.begin();
    
  // RTC setup
  DateTime now = DateTime(F(__DATE__), F(__TIME__));
  Serial.println("adjust time!");
  rtc.adjust(now);
 
  pinMode(0, OUTPUT); 
  Serial.begin(9600);
  uint32_t start = millis();
  while ( !Serial && (millis() - start) < 1500 );  // Open the Serial Monitor to get started or wait for 1.5"
  
  // init the library, search the LORAE5 on port 1 LEFT Grove port
  if ( ! lorae5.begin(DSKLORAE5_SWSERIAL_WIO_P1) ) {
    Serial.println("LoRa E5 Init Failed");
    while(1); 
  }  

  // Setup the LoRaWan Credentials
  if ( ! lorae5.setup(
        Frequency,
        deveui,
        appeui,
        appkey
     ) ){
    Serial.println("LoRa E5 Setup Failed");
 
    while(1);         
  }
}
 

void loop(void)
{
// get the current time and get the currtent Hour and Minute from the rtc object
DateTime now = rtc.now();
DateTime hr = now.hour();
DateTime mins = now.minute();

Serial.print("current time:   ");
Serial.print(now.hour(), DEC);
Serial.print(':');
Serial.print(now.minute(), DEC);
Serial.println(':');


// Check if it's in the proper time range (between 7pm and 10pm every night.)  else wait for an hour
if ((hr >= 19 or hr <= 10) and mins <= 45)
  {
    LightON();
  
    SendValue(HIGH);

    //Check if the light is actually ON If not, then send a message to the display (for now, but I could sent an alert in the future)
    if ( ! IsLightON() ){   
      //Send a message to display "Light should be on But it is not"
      Serial.println('Light should be on But it is no');
    } else {
      //Send a message to display "  OK the light is on 
      Serial.println('OK the light is on');
    }
    
    delay(2700000); // 45 minutes

    LightOFF();

    SendValue(LOW);

    delay(900000);  // 15 minutes 

  } else
  {
    delay(2700000); // 45 minutes
    delay(900000);  // 15 minutes 
  }

}

relay-test.ini

Arduino
Short firmware to test the Grove Relay
void setup() {
  pinMode(0, OUTPUT);    // sets the digital pin 13 as output
}

void loop() {
  digitalWrite(0, HIGH); // sets the digital pin 13 on
  delay(1000);            // waits for a second
  digitalWrite(0, LOW);  // sets the digital pin 13 off
  delay(1000);            // waits for a second
}

E5-relay-test1.ino

Arduino
Basic Grove Relay example
void setup() {
  pinMode(0, OUTPUT);    // sets the digital pin 13 as output
}

void loop() {
  digitalWrite(0, HIGH); // sets the digital pin 13 on
  delay(1000);            // waits for a second
  digitalWrite(0, LOW);  // sets the digital pin 13 off
  delay(1000);            // waits for a second
}

E5_RTC_TEST.ino

Arduino
This test demonstrates how to use the built-in RTC functionality inside the SAMD51 core within Wio Terminal.
#include "RTC_SAMD51.h"
#include "DateTime.h"
 
RTC_SAMD51 rtc;
void setup()
{
    rtc.begin();
 
    Serial.begin(115200);
 
    while (!Serial)
    {
        ;
    }
 
    DateTime now = DateTime(F(__DATE__), F(__TIME__));
    Serial.println("adjust time!");
    rtc.adjust(now);
 
    now = rtc.now();
 
    Serial.print(now.year(), DEC);
    Serial.print('/');
    Serial.print(now.month(), DEC);
    Serial.print('/');
    Serial.print(now.day(), DEC);
    Serial.print(" ");
    Serial.print(now.hour(), DEC);
    Serial.print(':');
    Serial.print(now.minute(), DEC);
    Serial.print(':');
    Serial.print(now.second(), DEC);
    Serial.println();
 
    DateTime alarm = DateTime(now.year(), now.month(), now.day(), now.hour(), now.minute(), now.second() + 15);
 
    rtc.setAlarm(0,alarm); // match after 15 seconds
    rtc.enableAlarm(0, rtc.MATCH_HHMMSS); // match Every Day
 
    rtc.attachInterrupt(alarmMatch); // callback whlie alarm is match
 
}
 
void loop()
{
}
 
void alarmMatch(uint32_t flag)
{
 
    Serial.println("Alarm Match!");
    DateTime now = rtc.now();
    Serial.print(now.year(), DEC);
    Serial.print('/');
    Serial.print(now.month(), DEC);
    Serial.print('/');
    Serial.print(now.day(), DEC);
    Serial.print(" ");
    Serial.print(now.hour(), DEC);
    Serial.print(':');
    Serial.print(now.minute(), DEC);
    Serial.print(':');
    Serial.print(now.second(), DEC);
    Serial.println();
}

Credits

skruglewicz

skruglewicz

23 projects • 10 followers
I am now a retired Senior Software Engineer with a Bachelor’s of Science Degree in Computer Science from Boston University.

Comments

Awards
Helium Award
IoT Into the Wild Contest for Sustainable Planet 2022
Related channels and tags
  • Edge Impulse
  • Home Automation
  • Internet of Things
  • Lights
  • Seeed Studio