I have been working with the wire library (I2C) to send data from one Arduino to another. I read that the Arduino can only send 6 bytes per cycle, but I have been able to transfer much larger strings. This code works without error:
Wire.beginTransmission(4); // transmit to device #4
for(int i = 0; i < 20; i ++){
char rand = random(65, 100);
Wire.write(rand);
}
Wire.endTransmission(); // stop transmitting
How is this possible? It seams that 32 characters can be sent without trouble.
I read this here: http://arduino.cc/en/Tutorial/MasterReader
Arduino 1, the Master, is programmed to request, and then read, 6 bytes of data sent from the uniquely addressed Slave Arduino.
Now that I look at this again (after reading the responses) I think that the limit was set in the code sample.
