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TOPIC: Multiple MCHStreamer Kits under windows

Multiple MCHStreamer Kits under windows 3 months 2 weeks ago #50183

  • makalu
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I'm currently experimenting with multiple MCHStreamerKits on the same windows PC and having some trouble. In my application, I'm using pyAudio to access the boards with my application specific python script. Everything works fine when I connect just one board to the PC. When I connect two boards, I get a "Invalid device" error (Errno -9996) whenever I try to open whichever board I connected last. The board which I connected first always works. I get this result using the WSAPI backend. When I try to use ASIO, I always only see one board, regardless how many boards I have connected. Also when I try to use Audacity to record sound from the boards, sometimes it works with both boards but sometimes I also get an error opening the sound device. Did anyone ever succeed to operate multiple boards at once on a windows PC?

Thank you very much for your findings!
Robert
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Multiple MCHStreamer Kits under windows 3 months 2 weeks ago #50184

  • john.reekie
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I'm wondering if you loaded firmware with two different IDs onto the two boards?
I am not miniDSP support.

"You must ask the right questions." - Dr. Alfred Lanning's hologram.
-> Have you read the User Manual??
-> Have you drawn and posted a diagram?
-> Have you posted a screenshot?
-> Have you posted your config file?
Last Edit: 3 months 2 weeks ago by john.reekie.
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Multiple MCHStreamer Kits under windows 3 months 2 weeks ago #50185

  • makalu
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Hello, thank you for your quick answer. That is a very good point, of course I haven't. I corrected this now by uploading the Firmware with serial 19 to one of the boards. Unfortunately, the effect is the same in spite of the fact that one of the boards has serial 19 and the other has serial 20. Or were you referring to the PID?
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Multiple MCHStreamer Kits under windows 3 months 2 weeks ago #50186

  • john.reekie
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I did mean the sn.... what's PID? At any rate, if that didn't work then I'm stumped. (Sorry, I don't have two boards to test it with, I just wondered if that might have been the reason.)
I am not miniDSP support.

"You must ask the right questions." - Dr. Alfred Lanning's hologram.
-> Have you read the User Manual??
-> Have you drawn and posted a diagram?
-> Have you posted a screenshot?
-> Have you posted your config file?
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Multiple MCHStreamer Kits under windows 3 months 2 weeks ago #50187

  • makalu
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I meant the USB Product ID, but that would probably require a custom firmware and driver. Thank you anyway for your help!
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