On Sat, 9 Mar 2019, Gene Heskett wrote:

On Saturday 09 March 2019 07:53:05 Nicklas Karlsson wrote:

On Sat, 9 Mar 2019 at 11:59, Nicklas Karlsson

<nicklas.karlsso...@gmail.com> wrote:
I think CPU Cortex-M4 is a lot slower than arduino

Really? That isn't my experience. Given that the M4 is running at
120MHz and the Arduino is 8MHz and both are running the same code?

No I got it wrong and mixed it with raspberry, I think.

The pi's huge, glaring slow i/o problem is that internal usb-2 hub. AIUI,
only the wifi and gpio bypass that huge bottleneck.


maybe this would help
https://geekworm.com/collections/raspberry-pi-hats/products/x820-v3-0-usb-3-0-2-5-inch-sata-hdd-ssd-storage-expansion-board


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