I am working on my Teensy Quad Audio Output project, and I have completed my build with two Teensy Audio Shields (sticking with Teensy 3.2 version for this first iteration). I followed the instructions at SparkFun, making a point to adhere to the corrected notes in the comments. And now I have a couple of questions.
First, concerning the three pads that select the I2C on the shields. I notice that when I cut the trace between the center pad and the right pad, I can still get electrical continuity between those two pads. A continuity check comes back positive, even though I can clearly see through magnification that the connecting trace has been removed. Is this appropriate?
Second, would there be any existing sketch, or any circuit test points and instructions, that might be useful to confirm that the assembly is properly built and prepared to work correctly before attempting to use it?
(Obviously, I wouldn't be asking these questions if the assembly just worked right away. I found a missing bracket in the sample sketch I found online, but the more important thing is that I am getting an audio buzz out to my speakers simply by connecting, before I even try to do anything. This is an alarm that I have something crossed up and I need to track that down.)
Please advise,
Thanks,
S
First, concerning the three pads that select the I2C on the shields. I notice that when I cut the trace between the center pad and the right pad, I can still get electrical continuity between those two pads. A continuity check comes back positive, even though I can clearly see through magnification that the connecting trace has been removed. Is this appropriate?
Second, would there be any existing sketch, or any circuit test points and instructions, that might be useful to confirm that the assembly is properly built and prepared to work correctly before attempting to use it?
(Obviously, I wouldn't be asking these questions if the assembly just worked right away. I found a missing bracket in the sample sketch I found online, but the more important thing is that I am getting an audio buzz out to my speakers simply by connecting, before I even try to do anything. This is an alarm that I have something crossed up and I need to track that down.)
Please advise,
Thanks,
S