Sounds like an interesting way to control lasers !

The octo base sound card does have DC output capability. The RCA connectors which ship with it have AC coupling caps on board, which would could potentially short out.

There is an octo template here which shows you the output wiring from the base sound card. Once you receive your octo if you want to short the AC coupling caps, I can point out which ones they are. If you do short them out, then I don't take any responsibility in any way for the effect of the modifications you will conduct.

Here is the octo template for your own designs if you want to make some :

https://github.com/Audio-Injector/AudioInjector.Octo.template

Check the pdf there :

https://github.com/Audio-Injector/AudioInjector.Octo.template/blob/master/AudioInjector.Octo.sch.pdf

The KiCad files give you a head start.

Matt

Check out our latest kickstarter :
https://www.kickstarter.com/projects/flatmax/audio-injector-isolated-dac-and-adc?ref=ppNew

Hi I'm trying to develop an hardware for my laser show (www.jestern.com) that I control with audio. Right now is based on bela (bela.io) but I'm thinking of using Raspberry Pi because cheaper and has better quality in my opinion (bela has some aliasing frequency that I owuld have to remove with a bandpass filter). In particular I'm in need for a soundcard that has 5 or more outputs, is DC coupled and 96Khz sample rate. 

Is it possible to DC your output caps? Just bought one for testing prototyping.

Yes one last thing can you send me the specs of the octo? I need the output voltage and input to design the rescaling circuit.

Thanks

A

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ALBERTO NOVELLO / JesterN

video snippets: instagram

av compositions: vimeo

site: jestern.com
shop: bandcamp
audio: soundcloud

 
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