[0:00] hey everyone so in the previous video
[0:03] i started the build of the walkie-talkie
[0:05] project
[0:06] and i found there was some weird
[0:09] interference
[0:14] testing testing one two three
[0:18] initially i thought this was noise on
[0:20] the power rail when we transmit
[0:23] wi-fi as we’ve seen before and then i
[0:25] checked that on the oscilloscope and it
[0:27] was all fine
[0:28] and then i thought maybe it was em
[0:30] interference
[0:31] so i moved all the components around and
[0:33] still
[0:34] no joy and then someone posted on a
[0:36] comment that
[0:38] he’s actually heard audible sound coming
[0:40] from his esp32 boards
[0:42] when he’s using wi-fi initially i
[0:45] thought
[0:46] that sounds like nonsense and then i
[0:48] listened really carefully
[0:50] and i can actually hear noise when i
[0:52] transmit wi-fi
[0:53] so i’ve managed to capture it using my
[0:55] microphone and
[0:56] here’s what it sounds like
[1:20] so i’m not really sure what to do about
[1:22] this noise uh i think turning down
[1:24] the wi-fi transmit power does help
[1:27] so i’ll try that next but um any
[1:30] suggestions would be
[1:33] welcome