I'm trying to control the volume on a STA540 based amp (this one http://www.sparkfun.com/products/9612). The plan is to use a an AD5206 digital pot (http://www.analog.com/static/imported-files/data_sheets/AD5204_5206.pdf) and simply wire the leads to the AD5206 instead of the POT ?
I actually tried and it didn't work right, the volume wouldn't change. Any help or ideas would be great.
I'm using the 10K AD5206, and after I hooked everything up like I said the volume was right in the middle (checked with a meter) and wouldn't change, I then wired the AD5206 to a set of LEDs like in this example (http://www.arduino.cc/en/Tutorial/SPIDigitalPot) and it still wouldn't change the brightness. I ordered a new AD5206 and hopefully that will be here soon but I'm not sure what to do ... I'm going to hook up the LEDs first and see if that works right but if anyone has any ideas if this is going to work or if I need to do something else that would be great.