just started playing with my arduino Duemilanove (I’m newbie with it).
sadly I cannot get the volume control via I2c running with my buffalo 1 (will upgrade to the 2 dream later :-))
I known that is not a arduino list, but maybe I'm making here a stupid fundamental error.
the base code is take from hifiduino's side. does somebody have an email from him ?
I'm using the wire lib.

A few questions:
about wiring from arduino to buffalo:
pin 4 to sda
pin 5 to scl
connect grounds.
Is it needed to connect Vdd on the buffalo too - on the arduino I have 3.3V
and do we need pull up resistors (I don't think so as the pull up res are in the buffalo 1 already ) ?
after that I tried the following test program to attenuate the vol.
but nothing happens — but the ‘build in LED’ from the arduino is flashing.
thanks

gebi
————————————————————————————–
#include
int ledPin = 13; // led on the arduino
int vol=0;
void setup()
{
Wire.begin(); // join i2c bus (address optional for master)
}
void loop()
{
// Do stuff repeatedly
digitalWrite(ledPin, LOW); // set the LED on
delay(1000);
Wire.beginTransmission(0×80); // Address of DAC is hex 80
Wire.send(0×01); // Address of register 1 is hex 1
Wire.send(vol); // Value into register 40
Wire.send(0×02); // Address of register 2 is hex 2
Wire.send(vol); // Value into register 40
Wire.send(0×03); // Address of register 3 is hex 3
Wire.send(vol); // Value into register 40
Wire.send(0×04); // Address of register 4 is hex4
Wire.send(vol); // Value into register 40
Wire.endTransmission();
digitalWrite(ledPin, HIGH);
delay(1000);
vol=vol+8; // 64 steps to 0.5db each. max attenuation=-127db
if(vol == 64) // if reached 64th position (max)
{
vol = 0; // start over from 0db
}
}