AgriLab Days¶

ESP32¶

https://dl.espressif.com/dl/package_esp32_index.json [[https://dl.espressif.com/dl/package_esp32_index.json]]

Sélectionner le module EPS32 Dev Module

Sélectionner le port COM correct (dépend de votre ordinateur)

Pinout du dev-kit

Premier exercice faire clignoter la LED intégrée.

void setup() {
  pinMode(22, OUTPUT);
}

void loop() {
  digitalWrite(22, HIGH);  
  delay(1000);                   
  digitalWrite(22, LOW);  
  delay(1000);                 
}

Test de différents capteurs¶

Test phototransistor¶

Groupe capteur thermistor analogique
Inspiration du code [[https://wiki.tkkrlab.nl/tkkrlab.nl/wiki/Arduino_KY-013_Temperature_sensor_module.html]] https://wiki.tkkrlab.nl/tkkrlab.nl/wiki/Arduino_KY-013_Temperature_sensor_module.html¶

à convertir en 4095 et 3.3V

int sensorPin = A5; // select the input pin for the potentiometer

double Thermistor(int RawADC) {
    double Temp;
    Temp = log(10000.0*((1024.0/RawADC-1))); 
    Temp = 1 / (0.001129148 + (0.000234125 + (0.0000000876741 * Temp * Temp ))* Temp );
    Temp = Temp - 273.15;            // Convert Kelvin to Celcius
    //Temp = (Temp * 9.0)/ 5.0 + 32.0; // Convert Celcius to Fahrenheit
    return Temp;
}

void setup() {
    Serial.begin(9600);
}

void loop() {
    int readVal=analogRead(sensorPin);
    double temp =  Thermistor(readVal);

    Serial.println(temp);  // display tempature
    //Serial.println(readVal);  // display tempature

    delay(500); 
}

Test pluviomètre¶

Test effet Hall¶

Rappel des équations de droites : https://fr.wikipedia.org/wiki/%C3%89quation_de_droite

Serveur MQTT pour exercices¶

Nouveau logiciel : https://mqttx.app/

Serveur : m21.cloudmqtt.com
port : 10707
User : mkhblqbj
Password : BdZ8yMyMGUER

ESP32 code avec MQTT¶

nécessite la librairie MQTT adafruit

CODE :

/***************************************************
  Adafruit MQTT Library ESP8266 Example

  Must use ESP8266 Arduino from:
    https://github.com/esp8266/Arduino

  Works great with Adafruit's Huzzah ESP board & Feather
  ----> https://www.adafruit.com/product/2471
  ----> https://www.adafruit.com/products/2821

  Adafruit invests time and resources providing this open source code,
  please support Adafruit and open-source hardware by purchasing
  products from Adafruit!

  Written by Tony DiCola for Adafruit Industries.
  MIT license, all text above must be included in any redistribution
 ****************************************************/
#include <WiFi.h>
#include "Adafruit_MQTT.h" 
#include "Adafruit_MQTT_Client.h" 

/************************* WiFi Access Point *********************************/

#define WLAN_SSID       "Pidgin" 
#define WLAN_PASS       "12345678" 

/************************* Adafruit.io Setup *********************************/

#define AIO_SERVER      "m21.cloudmqtt.com" 
#define AIO_SERVERPORT  10707                   // use 8883 for SSL
#define AIO_USERNAME    "mkhblqbj" 
#define AIO_KEY         "BdZ8yMyMGUER" 

/************ Global State (you don't need to change this!) ******************/

// Create an ESP8266 WiFiClient class to connect to the MQTT server.
WiFiClient client;
// or... use WiFiClientSecure for SSL
//WiFiClientSecure client;

// Setup the MQTT client class by passing in the WiFi client and MQTT server and login details.
Adafruit_MQTT_Client mqtt(&client, AIO_SERVER, AIO_SERVERPORT, AIO_USERNAME, AIO_KEY);

/****************************** Feeds ***************************************/

// Setup a feed called 'photocell' for publishing.
// Notice MQTT paths for AIO follow the form: <username>/feeds/<feedname>
Adafruit_MQTT_Publish photocell = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/temperature");

// Setup a feed called 'onoff' for subscribing to changes.
Adafruit_MQTT_Subscribe onoffbutton = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/onoff");

/*************************** Sketch Code ************************************/

// Bug workaround for Arduino 1.6.6, it seems to need a function declaration
// for some reason (only affects ESP8266, likely an arduino-builder bug).
void MQTT_connect();

void setup() {
  Serial.begin(115200);
  delay(10);

  Serial.println(F("Adafruit MQTT demo"));

  // Connect to WiFi access point.
  Serial.println(); Serial.println();
  Serial.print("Connecting to ");
  Serial.println(WLAN_SSID);

  WiFi.begin(WLAN_SSID, WLAN_PASS);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println();

  Serial.println("WiFi connected");
  Serial.println("IP address: "); Serial.println(WiFi.localIP());

  // Setup MQTT subscription for onoff feed.
  mqtt.subscribe(&onoffbutton);
}

uint32_t x=0;

void loop() {
  // Ensure the connection to the MQTT server is alive (this will make the first
  // connection and automatically reconnect when disconnected).  See the MQTT_connect
  // function definition further below.
  MQTT_connect();

  // this is our 'wait for incoming subscription packets' busy subloop
  // try to spend your time here

  Adafruit_MQTT_Subscribe *subscription;
  while ((subscription = mqtt.readSubscription(5000))) {
    if (subscription == &onoffbutton) {
      Serial.print(F("Got: "));
      Serial.println((char *)onoffbutton.lastread);
    }
  }

  // Now we can publish stuff!
  Serial.print(F("\nSending photocell val "));
  Serial.print(x);
  Serial.print("...");
  if (! photocell.publish(x++)) {
    Serial.println(F("Failed"));
  } else {
    Serial.println(F("OK!"));
  }

  // ping the server to keep the mqtt connection alive
  // NOT required if you are publishing once every KEEPALIVE seconds
  /*
  if(! mqtt.ping()) {
    mqtt.disconnect();
  }
  */
}

// Function to connect and reconnect as necessary to the MQTT server.
// Should be called in the loop function and it will take care if connecting.
void MQTT_connect() {
  int8_t ret;

  // Stop if already connected.
  if (mqtt.connected()) {
    return;
  }

  Serial.print("Connecting to MQTT... ");

  uint8_t retries = 3;
  while ((ret = mqtt.connect()) != 0) { // connect will return 0 for connected
       Serial.println(mqtt.connectErrorString(ret));
       Serial.println("Retrying MQTT connection in 5 seconds...");
       mqtt.disconnect();
       delay(5000);  // wait 5 seconds
       retries--;
       if (retries == 0) {
         // basically die and wait for WDT to reset me
         while (1);
       }
  }
  Serial.println("MQTT Connected!");
}

Version 2¶

// AgriLabDays inspiré de Adafruit MQTT

#include <WiFi.h>
#include "Adafruit_MQTT.h" 
#include "Adafruit_MQTT_Client.h" 

/************************* WiFi Access Point *********************************/

#define WLAN_SSID       "Pidgin" 
#define WLAN_PASS       "12345678" 

/************************* MQTT Server *********************************/

#define AIO_SERVER      "m21.cloudmqtt.com" 
#define AIO_SERVERPORT  10707                   // use 8883 for SSL
#define AIO_USERNAME    "mkhblqbj" 
#define AIO_KEY         "BdZ8yMyMGUER" 

/************ Global State (you don't need to change this!) ******************/

WiFiClient client;

Adafruit_MQTT_Client mqtt(&client, AIO_SERVER, AIO_SERVERPORT, AIO_USERNAME, AIO_KEY);

/****************************** Feeds ***************************************/

// Setup a feed called 'photocell' for publishing.
// Notice MQTT paths for AIO follow the form: <username>/feeds/<feedname>
Adafruit_MQTT_Publish temp001 = Adafruit_MQTT_Publish(&mqtt, "/temperature");
Adafruit_MQTT_Publish humid001 = Adafruit_MQTT_Publish(&mqtt, "/humidite");

// Setup a feed called 'onoff' for subscribing to changes.
//Adafruit_MQTT_Subscribe onoffbutton = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/onoff");

/*************************** Sketch Code ************************************/

void MQTT_connect();

void setup() {
  Serial.begin(115200);
  delay(10);

  Serial.println(F("Adafruit MQTT demo"));

  // Connect to WiFi access point.
  Serial.println(); Serial.println();
  Serial.print("Connecting to ");
  Serial.println(WLAN_SSID);

  WiFi.begin(WLAN_SSID, WLAN_PASS);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println();

  Serial.println("WiFi connected");
  Serial.println("IP address: "); Serial.println(WiFi.localIP());

}

uint32_t x=0;

void loop() {

  MQTT_connect();

  // Now we can publish stuff!
  Serial.print(F("\nSending capteur val "));
  Serial.print(x);
  Serial.print("...");
  if (! temp001.publish(x++)) {
    Serial.println(F("Failed"));

  } else {
    Serial.println(F("OK!"));
  }

  // ping the server to keep the mqtt connection alive
  // NOT required if you are publishing once every KEEPALIVE seconds
  /*
  if(! mqtt.ping()) {
    mqtt.disconnect();
  }
  */

  delay(5000);
}

void MQTT_connect() {
  int8_t ret;

  // Stop if already connected.
  if (mqtt.connected()) {
    return;
  }

  Serial.print("Connecting to MQTT... ");

  uint8_t retries = 3;
  while ((ret = mqtt.connect()) != 0) { // connect will return 0 for connected
       Serial.println(mqtt.connectErrorString(ret));
       Serial.println("Retrying MQTT connection in 5 seconds...");
       mqtt.disconnect();
       delay(5000);  // wait 5 seconds
       retries--;
       if (retries == 0) {
         // basically die and wait for WDT to reset me
         while (1);
       }
  }
  Serial.println("MQTT Connected!");
}

DEEP SLEEP¶

#include <WiFi.h>
#include "Adafruit_MQTT.h" 
#include "Adafruit_MQTT_Client.h" 

/************************* WiFi Access Point *********************************/

#define WLAN_SSID       "Pidgin" 
#define WLAN_PASS       "12345678" 

/************************* MQTT Server *********************************/

#define AIO_SERVER      "m21.cloudmqtt.com" 
#define AIO_SERVERPORT  10707                   // use 8883 for SSL
#define AIO_USERNAME    "mkhblqbj" 
#define AIO_KEY         "BdZ8yMyMGUER" 

/************ Global State (you don't need to change this!) ******************/

WiFiClient client;

Adafruit_MQTT_Client mqtt(&client, AIO_SERVER, AIO_SERVERPORT, AIO_USERNAME, AIO_KEY);

/****************************** Feeds ***************************************/

// Setup a feed called 'photocell' for publishing.
// Notice MQTT paths for AIO follow the form: <username>/feeds/<feedname>
Adafruit_MQTT_Publish hall001 = Adafruit_MQTT_Publish(&mqtt, "/halleffect");
// Setup a feed called 'onoff' for subscribing to changes.
//Adafruit_MQTT_Subscribe onoffbutton = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/onoff");

/*************************** Sketch Code ************************************/

void MQTT_connect();

void setup() {
  Serial.begin(115200);
  delay(10);

  Serial.println(F("Adafruit MQTT demo"));

  // Connect to WiFi access point.
  Serial.println(); Serial.println();
  Serial.print("Connecting to ");
  Serial.println(WLAN_SSID);

  WiFi.begin(WLAN_SSID, WLAN_PASS);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println();

  Serial.println("WiFi connected");
  Serial.println("IP address: "); Serial.println(WiFi.localIP());

  esp_sleep_enable_ext0_wakeup(GPIO_NUM_4,0);

  MQTT_connect();

  // Now we can publish stuff!
  Serial.print(F("\nSending capteur val "));
  Serial.print(digitalRead(Hall_Sensor));
  Serial.print("...");
  if (! hall001.publish(0)) {
    Serial.println(F("Failed"));

  } else {
    Serial.println(F("OK!"));
  }

  // ping the server to keep the mqtt connection alive
  // NOT required if you are publishing once every KEEPALIVE seconds
  /*
  if(! mqtt.ping()) {
    mqtt.disconnect();
  }
  */

  //delay(5000);

  Serial.println("Going to sleep now");
  esp_deep_sleep_start();
}

void loop() {

  Serial.print("never...");
}

void MQTT_connect() {
  int8_t ret;

  // Stop if already connected.
  if (mqtt.connected()) {
    return;
  }

  Serial.print("Connecting to MQTT... ");

  uint8_t retries = 3;
  while ((ret = mqtt.connect()) != 0) { // connect will return 0 for connected
       Serial.println(mqtt.connectErrorString(ret));
       Serial.println("Retrying MQTT connection in 5 seconds...");
       mqtt.disconnect();
       delay(5000);  // wait 5 seconds
       retries--;
       if (retries == 0) {
         // basically die and wait for WDT to reset me
         while (1);
       }
  }
  Serial.println("MQTT Connected!");
}

Modélisation sur KiCad¶

KiCad logiciel : https://www.kicad.org/

Librairies à installer : https://gitlab.fabcloud.org/pub/libraries/electronics/kicad

Modèle "simple" d'esp32 :

et les composants soudés :

Indications pour les pins par Florian Lampaert :¶

https://randomnerdtutorials.com/esp32-pinout-reference-gpios/

h2.Modèle KiCad

Fichiers : [[esp32-agrilabdays.zip]] et [[http://agrilab.unilasalle.fr/projets/attachments/3666]]

Modèle schematic et pistes

Traces faites avec mods.cba.mit.edu

Les fichiers pour la roland SRM20 :

[[http://agrilab.unilasalle.fr/projets/attachments/3677]]

[[http://agrilab.unilasalle.fr/projets/attachments/3678]]

[[http://agrilab.unilasalle.fr/projets/attachments/3679]]

[[http://agrilab.unilasalle.fr/projets/attachments/3680]]

Dimension du PCB¶

Dimensions du PCB 44*58 mm , attention ajouter de l'espace pour les connecteurs et la batterie.

Anémomètre¶

Modèle sur Thingiverse https://www.thingiverse.com/thing:2559929

Homeassistant en local sur un Raspberry pi¶

adresse en local : http://192.168.43.207:8123
login : agrilabdays

1 . installer mosquitto Broker

Serveur MQTT

Broker local 192.168.43.207:1883
login : pi
password : raspberry