How do you read and write in thingspeak to control actuator manual or auto?

[Dimas_I]

its from andre castro and sunak?
im sorry, im so dont undrestand about it

[ABG]

ESP32. MQTT. Broker. Publish. Subscribe. ThingSpeak

Hello friends, I’ll write in this topic about MQTT with ESP32. Publish. Subscribe. Broker. Mosquitto,… 0.- Board D1 R32 ESP32. This is a cheap card ($ 5) with the dimensions and shape of the Arduino UNO, but with the ESP32. I used this card in the ESP32 Wifi and ESP32 BLE tutorials. [esp322b] Search images: D1 R2 ESP32 This card has classic Bluetooth, BLE, WiFi, ADC, DAC, and more features. This card can be programmed with the Arduino IDE. [comparativa]

[Dimas_I]

in your example send and get data are manually with button. how about in get data always auto update without button get data. are with create 2 channel can solve the problem? channel 1to monitoring and channel 2 to control. thanks

[ABG]

@Dimas_I

how about in get data always auto update without button get data.

Pull in a Clock from the Sensors Drawer and use its Timer.

[Dimas_I]

i just try from many source and i get this from my program. can you check it? thanks

coba.aia (6.9 KB)

[ABG]

The Web2 PostText requests you are invoking should have a Web2 event block that catches the response that arrives in response to that PostText.
(I forget which event block. Check the tool tip for the PostText block.)

You need that to provide feedback for those buttons.

[ABG]

Here is the text responseContent you got, as seen in a Do It of global data (worst possible name for a variable):

Do It Result:
"{"channel":{"id":2574094,"name":"Monitoring","latitude":"0.0","longitude":"0.0","field1":"Suhu Udara","field2":"Kelembapan Udara","field3":"Sensor LDR","field4":"Sensor PIR","field5":"Kelembapan Tanah","created_at":"2024-06-10T15:02:35Z","updated_at":"2024-06-12T06:16:10Z","last_entry_id":1105},"feeds":[{"created_at":"2024-07-28T08:35:34Z","entry_id":1105,"field1":"30.80","field2":"62.00","field3":"1","field4":"0","field5":"100.00"}]}"

Here's proper parsing:

coba (1).aia (7.8 KB)

I did not address what you send in the PostText from your buttons, which is almost certainly wrong, given the variable names feeding them.

[Dimas_I]

im sorry for that worst variable name. i just make 3-4 project to try make the app and the channel for thingspeak

[Dimas_I]

so web1 is for monitoring, and web2 for control right?

[ABG]

That's a reasonable use of them.

It keeps the monitoring logic separate from the control logic.

[Dimas_I]

i got error like this while trying to click button off or on

[ABG]

If the URL is not valid, show it using the Do It facility.

[Dimas_I]

coba_1.aia (7.7 KB)
this my project after ad web2 url

[ABG]

What is the URL going into the Web2 Post?
What is the data going into it?

[Dimas_I]

this picture are condition after click pff switch manual. button can`t click

this condition after click on switch manual

are first screen condition

[Dimas_I]

web2 go to channel2 to control actuator and data sensor to channel1 to monitoring. in the app data sensor will show

[ABG]

Does that look reasonable to you?

[Dimas_I]

my bad.. i think not. because that link must contain channel2 to control. i think the field must 0 and 1

[Dimas_I]

I'm sorry, I have previously used that channel to display sensor data before for actuator control

[ABG]

I forgot to Do It against the Web2 URL

So I just did the Do It, hiding the evaluation in a debug procedure to not leave a trail of warnings and errors.

Notice how the URL has the https://api.thingspeak.com in front, but also so does your PostText!

Make up your mind.

P.S. Googling for Thingspeak Post Text got me to

Update channel data with HTTP GET or POST - MATLAB

Also, reread Noob's guide to Embedded Systems: Android App to connect to Thingspeak from my Web Services FAQ, where they set up Web2's URL.