CS42448 board ( 6 audio inputs / 8 outputs ) ?

[waydenie]

Hi everyone!

I came across the audio board that Paul Stoffregen made up that provides for 6 inputs and 8 outputs on oshpark ( https://oshpark.com/shared_projects/2Yj6rFaW ). Wondering if that ever made it to a product or how it worked out?

I'm considering a project that will need to process and mix up to 6 audio input and output (mono) channels. I'll also need to have some user front panel i/o , a simple display ( oled or lcd ), so a few extra pins / i2c on the appropriate Teensy would be needed...

I guess a couple of questions... Did this ever pan out? and is there a version ( or is it compatible with ) Teensy 4.1?

Thanks! Wayde.

[PaulStoffregen]

It wasn't ever turned into a commercial product, but this board was updated for Teensy 4.x. New version also on OSH Park.

https://oshpark.com/shared_projects/gVFy0fWQ

[waydenie]

Great, I'll look at the updated board then! Looks like it's up to 8 in and 8 out , with the extra ADC chip, nice!

I assume these are line level? Will oshpark assemble, or how hard is the codec chip to solder by hand? :-)


Thanks!W.

[waydenie]

So... I've been googling around for CS42448 usage elsewhere for inspiration, and came across the following.. Does it look similar? Other than the teensy specific interface layout, which I could work around with a ribbon cable from my mainboard with my Teensy...

https://www.aliexpress.com/item/1005003576154152.html

( I wouldn't consider it if this was an actual pjrc product, but if I don't need to deal with sourcing and mounting a bunch of fine pitch SMD devices, it's a bonus :-) )

[FrankV007]

Paul,

Is there a BOM associated with this board?

Best,
Frank

[PaulStoffregen]

Yes. Look for the 2 links below the parts placement image. One of those has lots of info, including the parts list. Technically that list is for the older version, but pretty much all the parts are the same. For the optional stereo ADC and its parts, you'll need to fill in the blanks. Hopefully not too complicated.