Hi Gary, good news! What is the audio device name on Windows? "USB AUDIO"? The L/R outputs and common are all at 2.5V in silence? If yes and yes, it's a genuine TP-6911 based device, the best for analog drives.
But for pulse/direction drives, the most of fake device works well, using schmidt triggers.
Using pulse/direction drives, the fake devices are even better than true TP-6911, because it is a PWM device, then the outputs must be low-pass-filtered (twice!) before schmidt triggers, while fake devices have "B-class" analog outputs, and must not be filtered.
Quote:
Originally Posted by garymck
Hi,
have just found the correct USB to audio adapter for this project here:
http://www.ebay.com.au/itm/5-1CH-USB...item19d2f9dbb4
$3.95 each delivered. Took 2 days to arrive. Have just ordered more. They are the genuine SJ588 that Maciel recommends.
hope it helps...
Gary |