Sedning data through serial and interpreting them

Using Arduino Project Guidance
1

Hi, i have a problem with sending data through serial.
Im using a send buffer on the side of Arduino Mega and recieve buffer on Wemos nodemcu v3. The problem is if i send one buffer to the other for the first time, the data is correct and every variable has its data. But after 3 loops on both devices, my data lands in literally random places in my recieve buffer array and i cant determine which data is which.

Can someone show me an example how to send data from 9 dynamic different variables on arduino, to 9 other variables that wemos nodemcu v3 can process and determine which number is which?

Thanks in advance

2

Maybe Robin's Serial Input Basics - updated might be of help. It gives ideas for the receiving end; next you can write the matching sending end.

If you post both your codes, we might be able to give a more tailored advise.

3

And how about sending a whole JSON file through serial? for me it contains about 152 characters, but is it possible to sent that large object through serial?

4

Of course. You just have to make sure that the receiving end isn't running blocking code or you risk overflowing the Serial input buffer.

5

+1 for the serial input basics. Sending packets with start and end markers will greatly aid in maintaining synchronization.

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