Milk-V Duo: A RISC-V SBC that runs Linux and RTOS/Arduino for $5

https://milkv.io/duo#

by Levitating • 2 years ago

36 8 2 years ago

milkv.io

sam_bristow• 2 years ago

This is an odd little board. It has 2 RISC-V cores (different clock rates) an ARM core (A53) and an 8051 MCU core.

With the low price it could be interesting as a platform in an educational setting perhaps.

Levitating3• 2 years ago

And a TPU! Together with it's CSI this board is perfect for running image related neural networks like face detection.

It has 2 RISC-V cores

These are separated though, with the default firmware the big core runs linux and the small core runs rtos.

They implemented a protocol called mailman to interact between the big (linux) core and the small (arduino/rtos) core.

The 8501 also implements mailman and this core can be used to wake up the others.

The usb-c connection is used for rndis so you can plug it in and immediately access it's internal network. But the usb-c connection can also be used to flash Arduino code (replacing RTOS). Additionally the board supports 5 serial consoles via UART.

I now own a couple of these boards and the possibilities of what I can do with them seem endless. I also have the Duo S which includes an additional CSI lane, an ethernet port and a usb port (as well as color coded gpio pins).

RantyDave• 2 years ago

No fewer than four cores across three architectures. It might be even harder to code for than the PS2.

aappleby2• 2 years ago

Oh, nowhere near as bad as PS2. All the cores have sane assembly languages and they're all on the same bus.

Levitating3• 2 years ago

It cannot utilize the arm and big risc-v core simultaneously. You can choose which one to use by jumping a gpio pin (or with a physical switch on the Duo S).

The big core typically runs Linux, while the smaller core typically runs RTOS (or arduino). And using a protocol (mailman) they can communicate.

The 8501 also uses mailman and can be used to wake up the rest of the system.

aappleby2• 2 years ago

I have one, it's a cute toy but I wish I'd shelled out a few bucks more for the Duo S - better form factor, 8x the ram.

Levitating3• 2 years ago

I have the Duo, Duo 256M, the development board and the Duo S.

However these are so versatile I wish I bought even more...

throwawayjoke62• 2 years ago

“Dual-systeCapable of running dual operating systems concurrentlym Operation” looks like they messed up their synchronization.

Milk-V Duo: A RISC-V SBC that runs Linux and RTOS/Arduino for $5

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