ESP-NOW Many-to-One: Real-time Data Publishing to Firebase | ESP Now communication Protocol

[@donnytrisandi8862]

thank you for the video that has been made. I want to ask what if the data sent by the node is sent directly through the gateway using ESP-NOW without having to use an additional microcontroller to activate the UART communication. is that possible?

[@ElconicsIndia]

Yes at that time I didn't got the solution. But later on I got.

[@donnytrisandi8862]

@@ElconicsIndia hello can u explain the number of 18, 22 in program "json.set("/id", Data.substring(18, 22)); // Place your sensor data here". the number is used for what?

[@ElconicsIndia]

Actually we are passing useful data like temperature and humidity in string format from the peer device . The data is storing in Data variables ->in between 18--22 temp data is there So we are extracting temperature value from the the Data variables by substring. t = Data substring (18,22); It will give Tempreature value in string format Further you can typecast in int as well based on your needs

[@karwaichen603]

Thank you. I have the same question, may I follow up with this question?

[@joharjharkhand886]

Fabulous 👌👌

[@ElconicsIndia]

Thanks 😊

[@danielbangun9065]

hey i have a question to you, so i have a projct using 3 esp32, 2 for slave and one for master, both of slaves have same data structure but different name and i using id for differentiate between both of slaves, so i want to display data to lcd in receiver, but i dont know how to define the variable from both of slaves in the receiver so the lcd know which data that is displayed on it

[@ElconicsIndia]

You need to filter the data from the receiver end. Say for example slave 1 has unique id 0x11 So you should read 0x11 payload. Whatever the data will be there you can print on lcd LCD itself can't print anything . I hope I understood your question properly. Still you have any doubts you can drop your question in Elconics whatsapp number