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[Manu]

Code: [Sélectionner]

// http://forum.bidouilleur.ca/
// v1.0 Thermostat STM32
/*
STM32F103C8T6
Relay 5v mod 3.3V
OLED SH1106
DHT22

PA5 input analog voltmeter
PB0 input analo pot for activation adjust
PB6 SCK OLED SH1106
PB7 SDA OLED SH1106
PB8 DHT22
 */

#include <Arduino.h>
#include <U8g2lib.h>
#include <Wire.h>
#include <DHT.h>
#define DHTPIN PB8
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);
U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
int Pin_Relay = PA0;
int Pin_VSalida = PA5;
int Pin_Activ = PB0;

void setup(void) {
  Serial.begin(9600);
  u8g2.begin();
  dht.begin();
  pinMode(Pin_Relay, OUTPUT);
  pinMode(Pin_VSalida, INPUT);
  pinMode(Pin_Activ, INPUT);
  digitalWrite(Pin_Relay, HIGH);
  delay(500);
}

void loop(void) {
 
 float T = dht.readTemperature();                   // Temperature ªC (for ºF -> dht.Temperature(True))
 float H = dht.readHumidity();                      // Humidity
 float V = (analogRead(Pin_VSalida)/71.236);        // AnalogRead to Volts (the formula changes according to the voltage divider bridge used)
 float A = ((analogRead(Pin_Activ)*1.01)-1001);     // AnalogRead to Temp activation (the formula changes according to the potentiometer value and voltage divider bridge used)
 float B = A;                                       // Over Temperature ºC = Activation Relay to apply later hysterersis

// Relay ON necessary conditions
for (T >= A ; T>= B ; T=T) {                        // Step1 Temp > A , Step2 Temp > B , Step3 not necessary but fill Temp = Temp 
  //Relay ON
  u8g2.clearBuffer();
  digitalWrite(Pin_Relay, LOW);
  u8g2.setFont (u8g2_font_courB12_tf);
  u8g2.setCursor(0,18);
  u8g2.print("ON");
  u8g2.setCursor(52,18);
  u8g2.print(V,0);
  u8g2.print("V");
  u8g2.setFont (u8g2_font_courB12_tf);
  u8g2.setCursor(86,18);
  u8g2.print(A,0);
  u8g2.print((char)176);
  u8g2.print("C"); 
  u8g2.setFont(u8g2_font_logisoso16_tr);
  u8g2.setCursor(0,40);
  u8g2.print("Temp");
  u8g2.setCursor(64,40);
  u8g2.print(dht.readTemperature(),0);
  u8g2.print((char)167);
  u8g2.print(" C");
  u8g2.setFont(u8g2_font_logisoso16_tr);
  u8g2.setCursor(0,63);
  u8g2.print("Hum");
  u8g2.setCursor(64,63);
  u8g2.print(dht.readHumidity(),0);
  u8g2.print(" ");
  u8g2.print((char)37);
  u8g2.sendBuffer();
  delay(300);
  T = dht.readTemperature();
  H = dht.readHumidity();                   
  V = (analogRead(Pin_VSalida)/71.236);       
  A = ((analogRead(Pin_Activ)*1.01)-1001); 
  B = (A-2);                                   // for Step2 Temp > B add "Hysteresis"
}
// Relay OFF
  u8g2.clearBuffer();
  digitalWrite(Pin_Relay, HIGH);
  u8g2.setFont (u8g2_font_courB12_tf);
  u8g2.setCursor(0,18);
  u8g2.print("OFF");
  u8g2.setCursor(52,18);
  u8g2.print(V,0);
  u8g2.print("V");
  u8g2.setFont (u8g2_font_courB12_tf);
  u8g2.setCursor(86,18);
  u8g2.print(A,0);
  u8g2.print((char)176);
  u8g2.print("C"); 
  u8g2.setFont(u8g2_font_logisoso16_tr);
  u8g2.setCursor(0,40);
  u8g2.print("Temp");
  u8g2.setCursor(64,40);
  u8g2.print(dht.readTemperature(),0);
  u8g2.print((char)167);
  u8g2.print(" C");
  u8g2.setFont(u8g2_font_logisoso16_tr);
  u8g2.setCursor(0,63);
  u8g2.print("Hum");
  u8g2.setCursor(64,63);
  u8g2.print(dht.readHumidity(),0);
  u8g2.print(" ");
  u8g2.print((char)37);
  u8g2.sendBuffer();
  delay(300);
}

Liens:

Relais 5v -> 3.3v modif
http://forum.bidouilleur.ca/index.php?topic=907.0https://youtu.be/j6blCrNm-5s

[kamill]

[Manu]