Could be something like this: https://www.pjrc.com/store/teensy41.html https://www.pjrc.com/store/teensy41.html From memory (heh) they come with 1Mb and you ca

Could be something like this: https://www.pjrc.com/store/teensy41.html https://www.pjrc.com/store/teensy41.html From memory (heh) they come with 1Mb and you can add another 8 or 16... It's a 600Mhz ARM M7 also, you can do a fair bit or work with that.