New hardware for maker:
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“I think there is a world market for maybe five computers.” – Thomas Watson , chairman of IBM, 1943
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Oh God, I forgot this famous quote from IBM boss…
By the way, few people know that in France, we had a very high ranked politician (I will not say the name here) who said in the 70s “High speed trains are useless, there is no market for this, I recommend to stop the development of this project” 
Looks good, but it lacks an i2s expansion header to attach an external dac.
Does it? The video says the header is pi compatible.
yes, maybe I’m wrong
without schematic, it’s hard to be 100 % sure that pins 12, 35 38 and 40 are wired to i2s lines …
Also, wiki (http://wiki.seeedstudio.com/ODYSSEY-X86J4105-GPIO/) doesn’t talk about i2s.
Ah, My eyes are old, I saw i2c and thought it was i2s.
edit: I2S is mentioned in the pdf http://files.seeedstudio.com/products/102110399/Documents/Atmel-SAMD21-datasheet.pdf (Chaper 28) Also Section 32 talks about the ADC so you probably don’t even need an external DAC.
editedit: That’s the ARM core, nothing about i2s being exposed. However there is a 3.5mm jack on the board. Given that it’s an Intel mobo with-extra-bits it’s likely that it has a integrated soundcard, probably 44.1kHz/48kHz 16 bit.
editeditedit: There’s an M2 PCIe 2.0 x4 slot. get some weirdo adaptor and shove a soundcard in that!