Night sky

A project log for un0rick - an ice40 ultrasound board

A hx4k lattice fpga based pulse echo board, yosys compatible

kelu124kelu124 09/01/2018 at 13:490 Comments

Some more tests with a probe.. this time from kretz technik. Raw acquisition yield interesting signals.. Doesn't it look like a night sky ?

The spectrum seems to contain good ultrasound (with a fair dose of noise) - the signal is between the blue lines, between 2.2MHz and 4.2MHz:

Which yield a classical wirephantom image.

See more on the notebook --