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C779
,A3: Since this item don't use any GPIO, so we think that it can work with I2S hats.
Q4: What to do if the module can't work normally?
A3: 1. First the HDMI device should be plugged in and have signal output before the Raspberry Pi is started.
2.Please check if there is a video related file in the /dev file.
3.
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