DIY open-source ultrasound hardware on the rp2040/rp2350

So... paired with https://coe.gatech.edu/news/2026/04/batteries-not-included-o...

and one has a complete hardware solution?

As someone who has never had an opportunity to play with it, I’m fascinated by what people are doing with PIO. In many cases it seems to be a ‘good enough’ FPGA on absurdly cheap hardware.

What are the practical applications of this? The things that come to mind when I hear "ultrasound" are medical devices and wall scanners.

That said, it's a cool project, even if it doesn't have a practical use.

Honestly what they're describing can be done on any MCU without PIO - set up clock division/PLL to provide ADC clock, use that same clock for timer source, set up a timer channel to trigger the pulse, set up a timer channel to trigger ADC DMA capture start, start the timer.

Congrats, now you have capture synchronized to pulse start "providing the sub-microsecond timing needed for ultrasound acquisition".