Browse around on the hackaday page, and read the Gitbook to learn more at first

Make/order a pulser module, as well as a analog processing module. Make files are on github.

In the meanwhile, prepare the motherboard, with a simple stripboard, using the tracks convention.

Prepare the microcontrolers with the code, especially the rapid ADC microcontroler. With an optional oscillo OLED screen if you want. Should look like this:

Alternatively, use a Beaglebone PRUDAQ to acquire the raw signal.

Plug in the transducer and the servo.

And you're good to get images!