I want to use audio jack for headsets, and I did not see any pin for MIC IN in it especially in 24 pin connectors for expansion board. Also, what other ways it can be done?
Hello Orangehead
On the expansion board the jack connector is just an output , see datasheet of the OPI zero 2w , it’s clearly marked on the 24 pin connector diagram
You can use an USB microphone to do simple
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After verifying project info, I can only use expansion connector for now. So, should I ground the mic conductor or leave it floated if unused? I am a bit confused audio jack schematic in expansion board schematic.
What kind of project ?