02-29-2024, 11:43 AM
(02-28-2024, 08:26 PM)hifinet Wrote:(02-28-2024, 06:38 PM)jschill24 Wrote: Hey gang,
Got my ProtoDac built. I have sound, but full of distortion. Where do I start?
Thanks!
If distortion is in both channels, the problem is with the I2S lines. The I2S signal is garbled. Reflow the solder to resistors R1-R3. Check the resistance of each of the three paths from module pins 1, 2, 3 to GPIO 35, 12 and 40, respectively. Each should measure about 430R.
This is also what happened to me. In my case, I failed to recognize that the module diagram was top view, so when I flipped the board over to solder I ended up inverting the pins soldered. Rookie mistake. Doh!