diff --git a/Arduino/CanGrow/CanGrow.ino b/Arduino/CanGrow/CanGrow.ino
index 1c379ba..6ef6c52 100644
--- a/Arduino/CanGrow/CanGrow.ino
+++ b/Arduino/CanGrow/CanGrow.ino
@@ -273,6 +273,9 @@ void loop() {
// refresh all sensor values
refreshSensors();
+ // calculate VPD - https://www.grower.ch/forum/threads/diy-grow-controller-cangrow-projektvorstellung.163654/page-4#post-4294197
+ valVPD = (((100 - valHumidity) / 100) * (610.7 * (pow(10, (7.5 * valTemperature / (237.3 + valTemperature))))))/1000;
+
// calculate acutal DayOfGrow
DayOfGrow = int(ceil(float((timeClient.getEpochTime() - GrowStart) / 60 / 60 / 24)));
// decide if we are in Veg or Bloom phase of grow
diff --git a/Arduino/CanGrow/CanGrow_HTML.h b/Arduino/CanGrow/CanGrow_HTML.h
index e0b5690..5cbf8a6 100644
--- a/Arduino/CanGrow/CanGrow_HTML.h
+++ b/Arduino/CanGrow/CanGrow_HTML.h
@@ -186,6 +186,24 @@ input[type=text], input[type=date], input[type=number], input[type=password], se
margin-bottom: 3px;
}
}
+/* VPD colors */
+
+.vpd_danger1 {
+ color: #1a6c9c;
+}
+.vpd_earlyveg {
+ color: #22ab9c;
+}
+.vpd_lateveg {
+ color: #9cc55b;
+}
+.vpd_latebloom {
+ color: #9cc55b;
+}
+.vpd_danger2 {
+ color: #1a6c9c;
+}
+
</style>
</head>
<body>
diff --git a/Arduino/CanGrow/CanGrow_Init.h b/Arduino/CanGrow/CanGrow_Init.h
index 20c9fcf..1d5c3f6 100644
--- a/Arduino/CanGrow/CanGrow_Init.h
+++ b/Arduino/CanGrow/CanGrow_Init.h
@@ -34,6 +34,10 @@ byte ScreenToDisplay = 0;
// how many seconds actual screen got displayed
byte ScreenIterationPassed = 0;
+// VPD value - https://www.grower.ch/forum/threads/diy-grow-controller-cangrow-projektvorstellung.163654/page-4#post-4294197
+float valVPD;
+
+
bool MaintenanceMode = false;
unsigned long MaintenanceStarted = 0;
diff --git a/Arduino/CanGrow/CanGrow_WebFunctions.h b/Arduino/CanGrow/CanGrow_WebFunctions.h
index 2c8f813..a0f796a 100644
--- a/Arduino/CanGrow/CanGrow_WebFunctions.h
+++ b/Arduino/CanGrow/CanGrow_WebFunctions.h
@@ -401,7 +401,39 @@ void WEBroot() {
body += "<b>Growlight brightness:</b> ";
body += ((PinLEDPWM * 100) / 255);
body += " %<br>\n";
+
+ // VPD
+ body += "<b>VPD (est.): <span class='";
+ // apply text color to the value according to this chart
+ if(valVPD < 0) {
+ body += "'>";
+ body += valVPD;
+ body += "</span></b> (Danger - check for disease!)";
+ } else if(valVPD < 0.4 ) {
+ body += "vpd_danger1'>";
+ body += valVPD;
+ body += "</span></b> (Danger - under transpiration!)";
+ } else if(valVPD < 0.8 ) {
+ body += "vpd_earlyveg'>";
+ body += valVPD;
+ body += "</span></b> (Early vegetation)";
+ } else if(valVPD < 1.2 ) {
+ body += "vpd_lateveg'>";
+ body += valVPD;
+ body += "</span></b> (Late vegetation)";
+ } else if(valVPD < 1.6 ) {
+ body += "vpd_latebloom'>";
+ body += valVPD;
+ body += "</span></b> (Late bloom)";
+ } else if(valVPD > 1.6 ) {
+ body += "vpd_danger2'>";
+ body += valVPD;
+ body += "</span></b> (Danger - over transpiration!)";
+ }
+
+
body += "<br>\n";
+
//~ body += "<form method='post' action='/switch'>\n";
//~ body += "<b>MOSFET:</b> <select id='output' name='output' >\n";
//~ body += "<option disabled value='' selected hidden>---</option>\n";
@@ -420,7 +452,7 @@ void WEBroot() {
//~ body += "<input type='submit' value='Save'>\n";
//~ body += "</form><br>\n";
- body += "<a class='button' href='/system/maintenance'>🧰 Maintenance</a>";
+ body += "<br><a class='button' href='/system/maintenance'>🧰 Maintenance</a>";
body += FPSTR(HTMLfooter);
@@ -1175,6 +1207,7 @@ void APIgetSensors() {
jsonSensors["temperature"] = valTemperature;
jsonSensors["humidity"] = valHumidity;
jsonSensors["waterlevel"] = valWaterlevel;
+ jsonSensors["vpd"] = valVPD;
String body;
serializeJsonPretty(jsonSensors, body);
@@ -1193,6 +1226,7 @@ void APIgetDebug() {
objRuntime["valSoilmoistureAvg"] = valSoilmoistureAvg;
objRuntime["valSoilmoistureAvg_tmp"] = valSoilmoistureAvg_tmp;
objRuntime["valSoilmoistureAvg_count"] = valSoilmoistureAvg_count;
+ objRuntime["valVPD"] = valVPD;
// WiFi
JsonObject objWiFi = jsonDebug["wifi"].add<JsonObject>();
@@ -1223,6 +1257,7 @@ void APIgetDebug() {
objSystem["HumiditySensor_Type"] = HumiditySensor_Type;
objSystem["PWMFrequency"] = PWMFrequency;
objSystem["DisplayScreenDuration"] = DisplayScreenDuration;
+ objSystem["Esp32CamIP"] = Esp32CamIP;
// Grow
JsonObject objGrow = jsonDebug["grow"].add<JsonObject>();
@@ -1239,10 +1274,11 @@ void APIgetDebug() {
objGrow["SunFadeDuration"] = SunFadeDuration;
objGrow["PinLEDPWM"] = PinLEDPWM;
objGrow["PinFANPWM"] = PinFANPWM;
+ objGrow["PinFAN2PWM"] = PinFAN2PWM;
objGrow["DayOfGrow"] = DayOfGrow;
objGrow["PumpIntervalVeg"] = PumpIntervalVeg;
objGrow["PumpIntervalBloom"] = PumpIntervalBloom;
- objSystem["PinFAN2PWM"] = PinFAN2PWM;
+