Maximum Length with EasyTransfer

[Anonymous]

Dear Sir,

Please I am working on mini ROV project with a communication between two Arduino Mega Board.

For this communication I am using “Easy Tranfer” library.So, I would like to know about the maximum length which can

allow this library.

Thanks in advance

[Bill]

The library itself will handle 255 bytes. However, the Serial buffer is only 64 bytes. So if you want to use more than 64 bytes, you must check for new messages very fast, faster than the buffer can fill up at your baud rate.

 

 

[Anonymous]

Thanks for the answer Mr Bill. I am really want to know the maximum length of cable between the two arduino cards to ensure the good serial communication because as I know the serial communication don’t allows a long distance communication?

I am planning to use more than 100 meters between the surface and subsea arduino cards. So, the library “Easy Transfer” itself can allow this long distance or we need RS485 driver?

[Anonymous]

RE,
Thanks for the answer Mr Bill. I am really want to know the maximum length of cable between the two arduino cards to ensure the good serial communication because as I know the serial communication don’t allows a long distance communication?
I am planning to use more than 100 meters between the surface and subsea arduino cards. So, the library “Easy Transfer” itself can allow this long distance or we need RS485 driver?

[Bill]

100 meters is too long for simple serial. You would need to use differential signaling (like 485) over twisted pair.

[Anonymous]

Hi Bill, thanks I already test it with and without max 485. my next step is to test full duplex with max 488 because i have some issues when using half duplex with max 485 🙁 is it your case also??

[Author]

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