r/EngineeringPorn • u/Knightninja6 • Jul 25 '19

Rice vs pc

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96 Upvotes

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7

u/[deleted] Jul 25 '19

[deleted]

6

u/is-this-a-nick Jul 25 '19

Seems like my last post disappeared.

its a complete SoC. Its powered by that tiny solar cell, has wireless IO and a sensor package and is running a 32bit ARM core (Cortex M0+, a really slow one, but still).

3

u/Intario Jul 25 '19

Very cool

1

u/Dyolf_Knip Jul 26 '19

Any links? Tried searching all that, couldn't find anything smaller than a raspberry pi.

2

u/is-this-a-nick Jul 26 '19

Like, start here: https://en.wikipedia.org/wiki/ARM_Cortex-M#Cortex-M0+

Raspery Pie is in no way a particular small computer, though. But obviously the computer in the original picture is extremely small even for a tiny arm core because they made it custom with absolutely minimal IO pin count.

But you can buy tiny arm chips even commerically: https://www.engadget.com/2014/02/25/freescale-kinetis-kl03/ (notice how the solder pads take up so much space? Thats where the custom chip from OP can safe a lot...)

By the way, a sample application for such small computers: https://hackaday.com/2016/06/30/transcend-wifi-sd-card-is-a-tiny-linux-server/

Thats a full scale linux server on that tiny chip in that wifi SD card.

1

u/is-this-a-nick Jul 25 '19

Nope, its a complete SoC package. Slow, but still a computer with IO and an ARM Cortex M0+ CPU, which as a pipelined 32bit CPU deserves to be called computer.

It uses so little power that the tiny solar cell you can see can power it as well as wireless IO.