The Natural Philosopher  wrote:
> I need a fair bit of RAM and a pretty fast floating point processor. But
> Arduino has some definite pluses.

Have a look at the Teensy 4.1 with 600 MHz cortex-m7 and room for extra
memory: https://www.pjrc.com/store/teensy41.html
Or perhaps the cheaper 4.0, if the 4.1 is still unavailable.

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