Even the iCE UP5K has a whopping internal 1Mb RAM.

With a focus too on Lattice's ;)

https://github.com/kelu124/awesome-latticeFPGAs

Thanks for sharing this!

As a way to go around this issue, I sense a bit of progress through compressed sensing, see for example http://advances.sciencemag.org/content/3/12/e1701423 . This would enable one (with enough horsepower) to get 4D imaging with a single element. This is very early, but I do plan on using this hardware to test the feasibility of single-piezoelement pseudo-imaging.

I would definitely be happy to chat with the sdr community to see how we could interface. Ping me ?

OP here -- I had played with a wireless probe and developed a very basic python framework around it, see https://github.com/kelu124/pyUProbe1 .

Same origin: Shenzen. Very friendly contacts there, always a pleasure to chat with fabs.

Could be indeed! Augmented sensing, there's definitely something one can do. A ping (radar-like) every 5s, and in time you listen to echoes. The more intense, the higher the frequency. Ping me through the contact in the doc if you're keen on discussing about this!

Actually I fear 5s is far too slow to develop a sense-like feel for it :/

But thank you for the offer to discuss more :)

Let me know if you can spare one too ;)

The point being that on these experiments, the sensor isn't an array of piezos, rather a single-element piezo. Cuts the costs (a fab invoices around 100-200e for such a sensor), but lowers the overall image quality.

I wonder if two sensors placed at a distance can make a huge difference, and how/if the image quality converges as you increase sensors.

One of the next experiment is to try with 8 small elements ;)