materials for TeZ Bioreactor course
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#include <Arduino.h>
#include <analogWrite.h>
#include <ESP32Servo.h>
#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include "fontdef.h"
//#include "SSD1306.h" // alias for `#include "SSD1306Wire.h"`
#include "SSD1306Wire.h"
#include "OLEDDisplayUi.h"
#include <driver/adc.h>
Servo myservo; // create servo object to control a servo
int servoPin = 23;
// Initialize the OLED display using Wire library
SSD1306Wire display(0x3c, 21, 22);
#define DHTPIN 25 // Digital pin connected to the DHT sensor
#define DHTTYPE DHT11 // DHT 11
//#define DHTTYPE DHT22 // DHT 22 (AM2302)
//#define DHTTYPE DHT21 // DHT 21 (AM2301)
DHT_Unified dht(DHTPIN, DHTTYPE);
uint32_t delayMS;
int count1 = 0;
long int deltask1 = 30 * 60 * 1000 / portTICK_PERIOD_MS; // 30 min
//long int deltask1 = 1 * 60 * 1000 / portTICK_PERIOD_MS; // 30 min
int transPin = 14;
int ledPin = 22;
////////////////////////
void task1(void * parameters) {
for(;;){
servoDance();
vTaskDelay(deltask1);
}
}
/////////////////////////
void servoDance(){
for(int n=1; n<=10; n++){
myservo.write(90);
delay(500);
myservo.write(180);
delay(500);
}
myservo.write(90);
}
////////////////////////
void setup() {
Serial.begin(115200);
myservo.setPeriodHertz(10);
myservo.attach(servoPin);
// pinMode(transPin, OUTPUT);
// pinMode(ledPin, OUTPUT);
//
// digitalWrite(ledPin,HIGH);
helloHuman(); // init OLED display
initTempSensor(); // init temperature sensor
xTaskCreate(
task1, // function name
"Task1", // task name
1000, // stack size
NULL, // task parameters
1, // priority (low = more priority)
NULL // task handle
);
}
void ShowTemperature(){
// SENSOR AND DISPLAY
display.clear();
// Delay between measurements.
delay(delayMS);
// Get temperature event and print its value.
sensors_event_t event;
dht.temperature().getEvent(&event);
if (isnan(event.temperature)) {
Serial.println(F("Error reading temperature!"));
}
else {
display.setFont(Monospaced_bold_16);
display.drawString(0, 10, "Temp:");
display.drawString(50, 10, String(int(event.temperature)) + " c" );
Serial.print(F("Temperature: "));
Serial.print(event.temperature);
Serial.println(F("°C"));
}
// Get humidity event and print its value.
dht.humidity().getEvent(&event);
if (isnan(event.relative_humidity)) {
Serial.println(F("Error reading humidity!"));
}
else {
display.setFont(Monospaced_bold_16);
display.drawString(0, 50, "Hum:");
display.drawString(50, 50, String(int(event.relative_humidity)) + " %");
Serial.print(F("Humidity: "));
Serial.print(event.relative_humidity);
Serial.println(F("%"));
}
display.display();
}
////////////////////////////
void initTempSensor(){
// Initialize DHT device.
dht.begin();
Serial.println(F("DHTxx Unified Sensor Example"));
// Print temperature sensor details.
sensor_t sensor;
dht.temperature().getSensor(&sensor);
Serial.println(F("------------------------------------"));
Serial.println(F("Temperature Sensor"));
Serial.print (F("Sensor Type: ")); Serial.println(sensor.name);
Serial.print (F("Driver Ver: ")); Serial.println(sensor.version);
Serial.print (F("Unique ID: ")); Serial.println(sensor.sensor_id);
Serial.print (F("Max Value: ")); Serial.print(sensor.max_value); Serial.println(F("°C"));
Serial.print (F("Min Value: ")); Serial.print(sensor.min_value); Serial.println(F("°C"));
Serial.print (F("Resolution: ")); Serial.print(sensor.resolution); Serial.println(F("°C"));
Serial.println(F("------------------------------------"));
// Print humidity sensor details.
dht.humidity().getSensor(&sensor);
Serial.println(F("Humidity Sensor"));
Serial.print (F("Sensor Type: ")); Serial.println(sensor.name);
Serial.print (F("Driver Ver: ")); Serial.println(sensor.version);
Serial.print (F("Unique ID: ")); Serial.println(sensor.sensor_id);
Serial.print (F("Max Value: ")); Serial.print(sensor.max_value); Serial.println(F("%"));
Serial.print (F("Min Value: ")); Serial.print(sensor.min_value); Serial.println(F("%"));
Serial.print (F("Resolution: ")); Serial.print(sensor.resolution); Serial.println(F("%"));
Serial.println(F("------------------------------------"));
// Set delay between sensor readings based on sensor details.
delayMS = sensor.min_delay / 1000;
}
////////////////////////
void helloHuman(){
// Initialising the OLED display
display.init();
display.flipScreenVertically();
display.setTextAlignment(TEXT_ALIGN_LEFT);
display.clear();
display.setFont(Monospaced_bold_16);
display.drawString(0, 0, "Hello Human!");
display.setFont(Monospaced_plain_12);
display.drawString(20, 30, "How are you");
display.drawString(40, 50, "today?");
display.display();
delay(3000);
}
////////////////////////
void loop() {
ShowTemperature();
delay(1000);
}