firmware - add FAN2 PWM setting

Arduino/CanGrow/CanGrow.ino

@@ -64,6 +64,7 @@ void setup() {
   //pinMode(PINdht, INPUT);
   pinMode(PINwaterlevel, OUTPUT);  
   pinMode(PINsoilmoisture, OUTPUT);  
+  pinMode(PinFAN2, OUTPUT);  
   
   pinMode(PinWIPE, OUTPUT);
   // set all OUTPUT to low
@@ -76,6 +77,8 @@ void setup() {
   // except PINsoilmoisture
   // PINsoilmoisture is always HIGH and gets LOW in moment of waterlevel measurement
   digitalWrite(PINsoilmoisture, HIGH);
+  // set FAN2 to off with digitalWrite LOW
+  analogWrite(PinFAN2, PinFAN2PWM);
   
   // set PWM frequency to 13.37KHz
   analogWriteFreq(13370);

Arduino/CanGrow/CanGrow_Init.h

@@ -141,8 +141,9 @@ byte SunriseHour = 7;
 byte SunriseMinute = 0;
 // PinLEDPWM - contains the PWM value for dimming the grow light
 // default is 255 to ensure it is just on for the case UseLEDrelais is true
-byte PinLEDPWM = 255;
+byte PinLEDPWM = 0;
-byte PinFANPWM = 255;
+byte PinFANPWM = 0;
+byte PinFAN2PWM = 0;
 
 // fade in and out sunrise and sunset?
 bool SunFade;

Arduino/CanGrow/CanGrow_PinAssignments.h

@@ -4,9 +4,9 @@
  * 
  * D0      - MOSFET Pump
  * D1, D2  - I2C
- * D3      - DHT11
+ * D3      - Fan2 PWM
  * D4      - PinWIPE
- * D5      - MOSFET Fan
+ * D5      - MOSFET Fan1, PWM
  * D6      - MOSFET Grow LED, PWM
  * D7      - waterlevel (set HIGH to read value)
  * D8      - analog soil moisture (set HIGH to read value) 
@@ -24,6 +24,7 @@ const uint8_t PinPUMP = D0;
 // DO NOT PULL D4 DOWN AT WHEN POWERING ON !!! BOOT WILL FAIL
 const uint8_t PinWIPE = D4;
 const uint8_t PinFAN = D5;
+const uint8_t PinFAN2 = D3;
 const uint8_t PinLED = D6; //
 const uint8_t PINwaterlevel = D7;
 const uint8_t PINsoilmoisture = D8;

Arduino/CanGrow/CanGrow_SysFunctions.h

@@ -110,7 +110,8 @@ bool loadEEPROM() {
    * 243 OutputInvert (1 byte)
    * 244 SoilmoistureWet (2 byte)
    * 246 SoilmoistureDry (2 byte)
-   * 248 ...
+   * 248 PinFAN2PWM (1 byte)
+   * 249 ...
    * 
    */
    
@@ -220,6 +221,8 @@ bool loadEEPROM() {
       EEPROM.get(241, PumpIntervalVeg);
       // size is 1 byte
       EEPROM.get(242, PumpIntervalBloom);
+      // size is 1 byte
+      EEPROM.get(248, PinFAN2PWM);
       
     }
 
@@ -290,6 +293,8 @@ bool loadEEPROM() {
     Serial.println(PinLEDPWM);
     Serial.print("PinFANPWM: ");
     Serial.println(PinFANPWM);
+    Serial.print("PinFAN2PWM: ");
+    Serial.println(PinFAN2PWM);
     Serial.print("SunFade: ");
     Serial.println(SunFade);
     Serial.print("SunFadeDuration: ");
@@ -417,6 +422,7 @@ void setOutput(byte Output, byte OutputState) {
    * 1 - LED
    * 2 - FAN
    * 3 - PUMP
+   * 4 - FAN2
    * 
    */
   bool UseRelais = true;
@@ -444,6 +450,10 @@ void setOutput(byte Output, byte OutputState) {
     case 3:
       OutputPin = PinPUMP;
       break;
+    case 4:
+      OutputPin = PinFAN2;
+      UseRelais = false;
+      break;
   }
   
   //~ Serial.print("Output: ");
@@ -467,7 +477,9 @@ void setOutput(byte Output, byte OutputState) {
     }
     digitalWrite(OutputPin, OutputState_tmp);
   } else {
-    if(OutputInvert == true) {
+    // when OutputInvert is set true AND output is not Fan2, invert
+    // for the 4-pin Fan PWM we dont need to invert, this could 
+    if( (OutputInvert == true) && (OutputPin != PinFAN2) ) {
       OutputState_tmp = 255 - OutputState;
     } else {
       OutputState_tmp = OutputState;
@@ -785,6 +797,9 @@ void controlPUMP() {
 
 
 void controlFAN() {
-  setOutput(2, PinFANPWM); //inverted pwm
+  // FAN1
+  setOutput(2, PinFANPWM);
+  // FAN2
+  setOutput(4, PinFAN2PWM);
 }
 

Arduino/CanGrow/CanGrow_Version.h

@@ -1,5 +1,5 @@
 /* CanGrow_Version.h gets generated from cangrow.sh */
 
 const char* CanGrowVer = "0.1-dev";
-const char* CanGrowBuild = "d782cae-20241205044935";
+const char* CanGrowBuild = "61c7af5-20241208140924";
 

Arduino/CanGrow/CanGrow_WebFunctions.h

@@ -509,16 +509,20 @@ void WEBgrowSettings() {
     }
     
     if(UseFANrelais == false) {
-      body += "FAN speed: <input type='range' id='PinFANPWM' name='PinFANPWM' min='0' max='255' value='";
+      body += "FAN1 speed: <input type='range' id='PinFANPWM' name='PinFANPWM' min='0' max='255' value='";
       body += PinFANPWM;
       body += "'/> %<br>\n";
     } else {
-      body += "FAN on/off: <select id='PinFANPWM' name='PinFANPWM' required>\n";
+      body += "FAN1 on/off: <select id='PinFANPWM' name='PinFANPWM' required>\n";
       body += "<option value='1'" + returnStrSelected(PinFANPWM, 1) + ">On</option>\n";
       body += "<option value='0'" + returnStrSelected(PinFANPWM, 0) + ">Off</option>\n";
       body += "</select><br>\n";
     }
     
+    body += "FAN2 speed: <input type='range' id='PinFAN2PWM' name='PinFAN2PWM' min='0' max='255' value='";
+    body += PinFAN2PWM;
+    body += "'/> %<br>\n";
+    
     
     body += "Pump interval vegetation: every <input class='inputShort' type='number' name='PumpIntervalVeg' min='0' max='255' value='";
     body += PumpIntervalVeg;
@@ -773,6 +777,7 @@ void POSTgrowSettings() {
   
   PinLEDPWM = webserver.arg("PinLEDPWM").toInt();
   PinFANPWM = webserver.arg("PinFANPWM").toInt();
+  PinFAN2PWM = webserver.arg("PinFAN2PWM").toInt();
   String GrowName_tmp = webserver.arg("GrowName");
   GrowName_tmp.toCharArray(GrowName, 32);
   
@@ -809,6 +814,8 @@ void POSTgrowSettings() {
   EEPROM.put(213, PinLEDPWM);
   // size is 1 byte
   EEPROM.put(216, PinFANPWM);
+  // size is 1 byte
+  EEPROM.put(248, PinFAN2PWM);
   EEPROM.put(217, SunFade);
   EEPROM.put(218, SunFadeDuration);
   // size is 1 byte
@@ -845,6 +852,8 @@ void POSTgrowSettings() {
   Serial.println(PinLEDPWM);
   Serial.print("PinFANPWM: ");
   Serial.println(PinFANPWM);
+  Serial.print("PinFAN2PWM: ");
+  Serial.println(PinFAN2PWM);
   
   webserver.sendHeader("Location", String("/growSettings?success"), true);
   webserver.send(302, "text/plain", "growSettings/save: success!\n");