Serial write/read

Forum 2005-2010 (read only) General Frequently-Asked Questions
#1

Hi,

I try to create a seral connexion betwen 2 arduinos.

I connect

arduino 1 Tx to Arduino2 Rx
Arduino2 rX to Arduino1 tx

When I send from ardunino 1 a simple strng “A” like Serial.print(“A”) I would like to receive it in Arduino 2. Here is the problem : I receive something but not a string ! I get some numeric Value (65 as the ASCII code of A i guess) and then time to time 255 or 247 or 253.

Is there any way to transmit and receive simply the string and nothing else ??

Thanks

Seb

#2

I believe you also need to connect the grounds of the two Arduinos to each other for successful operation.

–Phil.

#3

Hi,

Please don’t cross post on the forums. Doing so results in duplicate replies from multiple people which is an inefficient use of resources. :slight_smile:

Thanks.

–Phil.

#4

I’m sorry. Really. I thought I had post the 2nd message and a different forum. My mistake

Seb

#5

That’s okay. :slight_smile:

–Phil.

#6