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rekomerio / DrakenAudio

Bluetooth for Saab OG9-5 and OG9-3
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Scheme #1

Open J9s3s opened 3 months ago

J9s3s commented 3 months ago

Hi. Is there an electrical connection diagram? Thanks

rekomerio commented 3 months ago

Sorry but I have not made any. Pins for DAC can be seen here https://github.com/pschatzmann/arduino-audio-tools/wiki/External-DAC and for CAN you can see from here https://github.com/rekomerio/DrakenAudio/blob/bb59f2c5e6c0e9341ba4239c1d3f4f87cc584218/src/main.cpp#L21C1-L21C106

J9s3s commented 2 months ago

Hi. Do you have a DRV134 powered by 12V or 5V?

rekomerio commented 2 months ago

5V and do note you will need negative voltage converter such as MC34063A to get -5V

J9s3s commented 2 months ago

Thanks a lot for the reply. How did you connect the DRV134 to the connector in the trunk? L+(DRV134) to L+(connector), R- to R- and so on?

rekomerio commented 2 months ago

Yes exactly, here is the pinout from bluesaab project you can use as reference image

J9s3s commented 2 months ago

Hello. Do I need to configure DRV134 somehow? I have strong wheezing when the music is on. And when turned off, you can hear a squeak.

rekomerio commented 2 months ago

I never had that type of issue. Could it be a grounding issue?

J9s3s commented 2 months ago

Have you connected the GND on the output pins of the left and right channels to the ground?