i have the same problem but i cant send/receive any thing i type any thing to the serial moniter but it diseper
soory but my english is abd .
Show you code, your circuit and any photo you think will help get a reply.
This short example will echo back every character you type to Serial Monitor. This should work on any Arduino.
void setup()
{
Serial.begin( 9600 );
}
void loop()
{
if ( Serial.available() )
{
int c = Serial.read();
Serial.write( c );
}
}
1 Like
Make sure the Serial Monitor has the matching baud rate selected
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