I will have 5 or more identical machines that will use the same dashboard layout. Is there a way I could have one dashboard where maybe a value widget could be changed to Machine 1, machine 2, etc and the dashboard would switch to another machine and display info from the new selected machine? Or will I have to make an identical Thing and dashboard for each machine and link variables to individual identical things? I hope you get the concept of what I mean. I want to use one dashboard to control multiple machines each of which are the same.

You wrote: "That's pretty weird. I do have projects with many variables working perfectly fine. Can you share the sketch that is not working so that I can try to reproduce the effect?" Yes, please try to help me make this work. Is there a way I can do the Thing variable updating myself in code rather than having it be done in the background? Maybe with the ArduinoIoTCloud library? I need to be able to send SMS messages from within my cloud application, so I need to pause the Thing variable updates, send the SMS, and resume. Here are my Thing variables. If I add one more Thing variable, the cloud stuff locks up, my main Loop executes three times before the lockup. Then it is almost impossible to reprogram the MKR NB 1500 again because the watchdog goes off in the middle of the upload process. I have a total of 21 Thing variables I want to use. [image] Here is the code. I am running a new clean build of Win10 because i wanted to be sure it wasn't some windows thing. I had the exact same results using a different computer. Note, I had all of the Thing variables linked to widgets on dashboards too. Depending on how interested you are in getting to the bottom of this problem, and want to work with me at the same time,let me know your time zone and what time you would be available, and I will be here to work live with you. This is very important to me as I have the potential to lose lots of money if I can't get this to work. Thanks in advance! Oh, I commented out the callback code and had the same problem either way. Tom /* Sketch generated by the Arduino IoT Cloud Thing "GreenWater2" [https://create.arduino.cc/cloud/things/3b7bb899-d59e-4d1e-ae90-07da76eee3c0](https://create.arduino.cc/cloud/things/3b7bb899-d59e-4d1e-ae90-07da76eee3c0) Arduino IoT Cloud Variables description The following variables are automatically generated and updated when changes are made to the Thing String status; String testValue; int area1; int area2; int area3; int boardO3analog; int number1; int number2; int number3; int potentiometer; int seconds; bool led; Variables which are marked as READ/WRITE in the Cloud Thing will also have functions which are called when their values are changed from the Dashboard. These functions are generated with the Thing and added at the end of this sketch. */ #include "thingProperties.h" int i = 0; unsigned long starttime = millis(); void setup() { // Initialize serial and wait for port to open: Serial.begin(9600); // This delay gives the chance to wait for a Serial Monitor without blocking if none is found delay(1500); Serial.println("Serial working"); // Defined in thingProperties.h initProperties(); /* Invoking `addCallback` on the ArduinoCloud object allows you to subscribe to any of the available events and decide which functions to call when they are fired. The functions `doThisOnConnect`, `doThisOnSync`, `doThisOnDisconnect` are custom functions and can be named to your likings and for this example they are defined/implemented at the bottom of the Sketch */ // I have tried with and without these callbacks and program fails the same way ArduinoCloud.addCallback(ArduinoIoTCloudEvent::CONNECT, doThisOnConnect); ArduinoCloud.addCallback(ArduinoIoTCloudEvent::SYNC, doThisOnSync); ArduinoCloud.addCallback(ArduinoIoTCloudEvent::DISCONNECT, doThisOnDisconnect); // Connect to Arduino IoT Cloud // If watchdog is on and program fails to connect to the cloud it is almost // impossible to upload a new sketch because the watchdog fires during the upload process ArduinoCloud.begin(ArduinoIoTPreferredConnection, false); // false = no watchdog /* The following function allows you to obtain more information related to the state of network and IoT Cloud connection and errors the higher number the more granular information you’ll get. The default is 0 (only errors). Maximum is 4 */ setDebugMessageLevel(4); ArduinoCloud.printDebugInfo(); } // ====================== Main Loop ========================= void loop() { ArduinoCloud.update(); // Your code here Serial.print("\n("); Serial.print(i++); Serial.print(") CloudCon = "); Serial.println(ArduinoCloud.connected()); //seconds = (millis()-starttime) / 1000; //seconds //potentiometer = analogRead(A0); delay(1000); // much shorter than watchdog ~ 16 sec } // ====================== END Main Loop ==================== /* Since Status is READ_WRITE variable, onStatusChange() is executed every time a new value is received from IoT Cloud. */ void onStatusChange() { // Add your code here to act upon Status change via dashboard Serial.print("Status="); Serial.println(status); } /* Since TestValue is READ_WRITE variable, onTestValueChange() is executed every time a new value is received from IoT Cloud. */ void onTestValueChange() { // Add your code here to act upon TestValue change } /* Since Area1 is READ_WRITE variable, onArea1Change() is executed every time a new value is received from IoT Cloud. */ void onArea1Change() { // Add your code here to act upon Area1 change Serial.print("Area1="); Serial.println(area1); } /* Since Area2 is READ_WRITE variable, onArea2Change() is executed every time a new value is received from IoT Cloud. */ void onArea2Change() { // Add your code here to act upon Area2 change } /* Since Area3 is READ_WRITE variable, onArea3Change() is executed every time a new value is received from IoT Cloud. */ void onArea3Change() { // Add your code here to act upon Area3 change } /* Since BoardO3Analog is READ_WRITE variable, onBoardO3AnalogChange() is executed every time a new value is received from IoT Cloud. */ void onBoardO3AnalogChange() { // Add your code here to act upon BoardO3Analog change } /* Since Number1 is READ_WRITE variable, onNumber1Change() is executed every time a new value is received from IoT Cloud. */ void onNumber1Change() { // Add your code here to act upon Number1 change } /* Since Number2 is READ_WRITE variable, onNumber2Change() is executed every time a new value is received from IoT Cloud. */ void onNumber2Change() { // Add your code here to act upon Number2 change } /* Since Number3 is READ_WRITE variable, onNumber3Change() is executed every time a new value is received from IoT Cloud. */ void onNumber3Change() { // Add your code here to act upon Number3 change } /* Since Potentiometer is READ_WRITE variable, onPotentiometerChange() is executed every time a new value is received from IoT Cloud. */ void onPotentiometerChange() { // Add your code here to act upon Potentiometer change } /* Since Seconds is READ_WRITE variable, onSecondsChange() is executed every time a new value is received from IoT Cloud. */ void onSecondsChange() { // Add your code here to act upon Seconds change } /* Since Led is READ_WRITE variable, onLedChange() is executed every time a new value is received from IoT Cloud. */ void onLedChange() { // Add your code here to act upon Led change digitalWrite(5,led); testValue = ("Led = " + String(led)); Serial.print("Led changed"); } void doThisOnConnect() { /* add your custom code here */ Serial.print("Board successfully connected to Arduino IoT Cloud - "); Serial.println((millis() - starttime) / 1000); } void doThisOnSync() { /* add your custom code here */ Serial.print("Thing Properties synchronised - "); Serial.println((millis() - starttime) / 1000); } void doThisOnDisconnect() { /* add your custom code here */ Serial.print("Board disconnected from Arduino IoT Cloud - "); Serial.println((millis() - starttime) / 1000); }

I would suggest removing the delay() in the loop(). Even if it is a short one. You can follow this approach unsigned long last_ts = 0; void loop() { ArduinoCloud.update(); ... unsigned long now = millis(); if (now - last_ts > 1000) { last_ts = now; ... periodic code here ... } ... }

[image] twesthoff: Yes, please try to help me make this work. Is there a way I can do the Thing variable updating myself in code rather than having it be done in the background? Maybe with the ArduinoIoTCloud library? I need to be able to send SMS messages from within my cloud application, so I need to pause the Thing variable updates, send the SMS, and resume. Instead of SMS, you could send emails using the Trigger feature https://docs.arduino.cc/arduino-cloud/features/triggers If that's not a good option for you, you could use webhooks to connect with IFTTT or Zapier. Then you can find in those platforms any services that can send SMS. https://docs.arduino.cc/arduino-cloud/features/webhooks

I had tried that at one time and it didn't seem to make any difference as long as I didn't exceed about 15 seconds for the watchdog timer. I am familiar with this issue and I will try as you suggested. The only reason for the delay was so I could read the output and not have the serial buffer overwrite itself giving scrambled output since the loop runs so fast. Part of the problem may be that the loop starts before the background connection stuff has finished. The loop rund about three seconds before the Connected message prints. That is about when my more than 12 Thing variable program hangs. Could be a coincidence. Did you get my code to run? Even with the delay(1000) removed? Thanks so much for helping with this, it is really important to me. Tom

My client want texts to be sent to his phone. I would like to know about the "trigger feature" I have not heard of that.

It was recently announced :wink: [image] Announcing Arduino Cloud Triggers and Notifications IoT Cloud Hi! Today, we are really happy to announce a new (and long awaited) Arduino Cloud feature: Cloud Triggers. With this feature, users can create triggers in the Cloud based on conditions that execute actions when the condition is met. This is a multiple phase design and for the first release only boolean and String variables are supported for the conditions and email notifications for the actions. This is a very basic yet powerful implementation enabling users to trigger the email notification…

[image] twesthoff: Did you get my code to run? Even with the delay(1000) removed? Hi! I have just tested your code (as it is and with one additional variable) and it works for me :man_shrugging: It is a pretty simple code, so I don't actually see any reasons why it shouldn't work... :sweat_smile:

I can see some potential uses for Triggers, nice to have that feature. I tried to do more testing, but the cloud editor can't upload a sketch today. error is "No Device found on com3". It shows it as connected at the top of the cloud IDE. I reinstalled the create agent. No luck. The IDE works fine on other sketches. I managed to download the test sketch to the IDE and it compiled with errors about the SECRET_OPTIONAL_APN was not declared in this scope (same for the other SECRET_...). I think that is something the cloud editor does for you that the IDE doesn't. Sigh... I'll hard code them in and try that.

Wouldn't let me change the code gave read only error. I did get it to work. I had to close all instances of the IDE, then the cloud editor worked OK. I guess the IDE and the cloud editor are mutually exclusive. I will run some tests.

Ran into a problem. In cloud editor I loaded my second test program a different Thing I guess. It gave me an error "No device is currently associated to this Thing, hence the Connection Handler code could not be generated". It also put a Comment box in the .h code saying essentially the same. and telling me to associate an existing device or manually create your own instance of Connection Handler. I wouldn't know how to manually do that so I used the cloud to disconnect the device (there is only one device) and then connected it to the appropriate thing. I get the same error "No device...". Meanwhile the serial monitor shows the first test program is still running happily. I reset the device and it of course rebooted connected and ran the first test program as expected. So at this point I am stuck. Bug or feature? I will use the IDE to program the board with the "Blink" program to stop the device from connecting to the cloud, then go back to the cloud editor and try the other cloud test program. fairly sure if this will work, will update soon.

Can one dashboard connect to many devices?

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dbeamonte_arduino July 14, 2023, 1:05pm 12

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Can one dashboard connect to many devices?

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