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A comment on Odyssey Blue: Celeron Mini PC with Arduino Coprocessor, 128GB SSD and 2-Port NIC. Parent comment

Re:Odyssey Blue: Celeron Mini PC with Arduino Coprocessor, 1... by superkuh on Monday January 16, 2023 @08:03PM (#34407844)
>$35 Raspberry Pi 4

It's more like $100 for an rpi4 currently. Also, an rpi doesn't really replace an actual microcontroller in terms of I/O.

I tried looking up more on the "ATSAMD21 ARM® Cortex®-M0+" but didn't find out exactly what it means for this to be a co-processor. Does it share system RAM? Like... an arduino with GB of ram? That doesn't seem possible. So I suppose it's more likely it's just a arduino capable chip thrown in on the same board and same power without much beyond a built in serial interface...

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Re:Odyssey Blue: Celeron Mini PC with Arduino Coprocessor, 1... by magicalhippo on Monday January 16, 2023 @08:31PM (#34408070)
It's not spelled out very explicitly, but the wiki[1] contains the details. It's connected to the host CPU via a serial port, and the specifications state "28-pin header from SAMD21G18". There's also a pinout diagram[2].

[1]: https://wiki.seeedstudio.com/ODYSSEY-X86J4105/

[2]: https://wiki.seeedstudio.com/ODYSSEY-X86J4105/#pinout-diagra...

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