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--- arduino [2024/02/29 13:36] – Externe Bearbeitung 127.0.0.1
+++ arduino [2024/04/20 17:22] (aktuell) – [Joystick] gerald
@@ Zeile 75: / Zeile 75: @@
 {{ ::arduinojoysticklibrary-version-1.0.zip |}}
+==== Bewässerungsautomatik ====
+Pumpen, 4 Feuchtigkeitssensoren, Board mit 4 Relais bei Ali für cs 13 EU.
+{{::4bewaesserung_ali.png?400|}}
+{{:4bewaesserung.png?400|}}
+Quelle((https://forum.arduino.cc/t/capacitive-soil-moisture-sensor-4-relay/1244826/6))
+<code>
+const byte channels = 3;
+const byte relayPin[channels] = {3, 5, 7}; // Pins controlling the relays
+const byte moisturePin[channels] = {A0, A1, A2}; // Analog pins connected to the moisture sensors
+const int threshold[channels] = {350, 400, 400}; // Adjust these values based on your soil conditions
+const byte moisturePinTorr = A3; // Analog pins connected to the moisture sensors
+const int thresholdTorr = 530; // Adjust these values based on your soil conditions
+void setup() {
+  Serial.begin(9600);
+  for (byte c=0; c<channels; c++) {
+    pinMode(moisturePin[c], INPUT);
+    pinMode(relayPin[c], OUTPUT);
+  }
+  pinMode(moisturePinTorr, INPUT);
+}
+void loop() {
+  int moistureLeveltorr = analogRead(moisturePinTorr);
+  for (byte c=0; c<channels; c++) {
+    int moistureLevel = analogRead(moisturePin[c]);
+    if (moistureLevel > threshold[c] && moistureLeveltorr < thresholdTorr) {
+      Serial.print("Soil moisture ");
+      Serial.print(c);
+      Serial.println(" is DRY => activating pump");
+      digitalWrite(relayPin[c], LOW);  // Turn on the pump
+      // Decide how long the pump should run (e.g., 5-10 seconds)
+      int pumpRunTime = random(15, 19);  // Random time between 5 and 10 seconds
+      delay(pumpRunTime * 1000);         // Convert to milliseconds
+</code>
+pumps and 3 relay coils are too much load on USB supply, you need a separate 5 volt supply of at least 2 Amps. Also, you should have a kickback suppression diode in parallel with each pump, cathode (end with band) toward + (positive) voltage.

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arduino.txt · Zuletzt geändert: 2024/04/20 17:22 von gerald

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