1. Sera Otomasyonu

#include <PxServ.h>
#include <DHT.h>
 
const char* WIFI_SSID = "wifi_ssid";
const char* WIFI_PASSWORD = "wifi_sifre";
const char* PXSERV_API_KEY = "pxserv_api_anahtariniz";
const int DHT_PIN = 4;
const int SOIL_PIN = 34;
const int FAN_PIN = 25;
const int PUMP_PIN = 26;
const int DRY_VALUE = 3000;  // Kalibre edin
const int WET_VALUE = 1400;  // Kalibre edin
 
const unsigned long PUMP_RUN_MS = 5000;
const unsigned long PUMP_COOLDOWN_MS = 60000;
 
PxServ client(PXSERV_API_KEY);
DHT dht(DHT_PIN, DHT22);
 
bool systemEnabled = true;
bool fanOn = false;
bool pumpOn = false;
float fanOnAt = 30.0;
float fanOffAt = 28.0;
int wateringThreshold = 30;
unsigned long pumpStartedAt = 0;
unsigned long pumpStoppedAt = 0;
unsigned long lastSensorAt = 0;
unsigned long lastConfigAt = 0;
 
void setOutput(int pin, bool enabled) {
  digitalWrite(pin, enabled ? LOW : HIGH);
}
 
void setPump(bool enabled) {
  pumpOn = enabled;
  setOutput(PUMP_PIN, enabled);
  if (enabled) pumpStartedAt = millis();
  else pumpStoppedAt = millis();
}
 
void readConfig() {
  PxServ::Callback active = client.getData("sera/sistem-aktif");
  if (active.status == 200) systemEnabled = active.data == "1";
 
  PxServ::Callback onValue = client.getData("sera/fan-ac");
  if (onValue.status == 200) fanOnAt = onValue.data.toFloat();
 
  PxServ::Callback offValue = client.getData("sera/fan-kapat");
  if (offValue.status == 200) fanOffAt = offValue.data.toFloat();
 
  PxServ::Callback soilValue = client.getData("sera/sulama-esigi");
  if (soilValue.status == 200) {
    wateringThreshold = constrain(soilValue.data.toInt(), 0, 100);
  }
}
 
void safeStop(String reason) {
  fanOn = false;
  setOutput(FAN_PIN, false);
  if (pumpOn) setPump(false);
  client.setData("sera/durum", reason);
}
 
void setup() {
  Serial.begin(115200);
  pinMode(FAN_PIN, OUTPUT);
  pinMode(PUMP_PIN, OUTPUT);
  setOutput(FAN_PIN, false);
  setOutput(PUMP_PIN, false);
  analogReadResolution(12);
  dht.begin();
  PxServ::connectWifi(WIFI_SSID, WIFI_PASSWORD);
}
 
void loop() {
  unsigned long now = millis();
 
  if (pumpOn && now - pumpStartedAt >= PUMP_RUN_MS) setPump(false);
 
  if (now - lastConfigAt >= 30000) {
    lastConfigAt = now;
    readConfig();
  }
 
  if (now - lastSensorAt < 10000) {
    delay(20);
    return;
  }
  lastSensorAt = now;
 
  float temperature = dht.readTemperature();
  int soilRaw = analogRead(SOIL_PIN);
  int soil = constrain(map(soilRaw, DRY_VALUE, WET_VALUE, 0, 100), 0, 100);
 
  if (!systemEnabled) {
    safeStop("uzaktan-kapali");
    return;
  }
  if (isnan(temperature)) {
    safeStop("sensor-hatasi");
    return;
  }
  if (fanOffAt >= fanOnAt) {
    safeStop("ayar-hatasi");
    return;
  }
 
  if (!fanOn && temperature >= fanOnAt) fanOn = true;
  if (fanOn && temperature <= fanOffAt) fanOn = false;
  setOutput(FAN_PIN, fanOn);
 
  bool cooldownReady = now - pumpStoppedAt >= PUMP_COOLDOWN_MS;
  if (!pumpOn && soil < wateringThreshold && cooldownReady) setPump(true);
 
  client.setData("sera/sicaklik", String(temperature, 1));
  client.setData("sera/toprak-nemi", String(soil));
  client.setData("sera/fan-durum", fanOn ? "1" : "0");
  client.setData("sera/pompa-durum", pumpOn ? "1" : "0");
  client.setData("sera/durum", "normal");
}