An element of the kit

This element is part of a kit, which is composed of :

• Analog board
• 20Msps ADC pHAT
• High voltage pulser

A single-design board going up to 64Msps, with a 2000 lines capacity, will be made available soon. Don't hesitate to drop me a message if you are curious.

What is it?

The aim of this module is to get the electrical signal coming back from a transducer, and to deliver the signal, analogically processed, with all the intermediary signals accessible to the user.

• Getting access to a TGC
• Getting the envelope of the signal
• Cleaning the signal before feeding in the on-board SPI ADC

All key signals are accessible, and jumpers, as well as pots, enable on-board fine-tuning of the signals.

This gave for example the following image from a vintage ultrasound probe found on ebay:

Why did you make it?

This module is part of a project has a specific target of providing a low-cost, open source technological kit to allow scientists, academics, hackers, makers or OSHW fans to hack their way to ultrasound imaging - below 500$ - at home, with no specific equipment required. For complementary sources of information, you can visit the Hackaday Page, our github repo or the online modules manual.

The results are detailed below:

What makes it special?

It's also extremely robust, extremely versatile, and having access to all intermediary signals enables you to do whatever you want with your ultrasound imaging system.

Can I save money by doing it myself?

Sure! You can find the Kicad and Altium files here](https://github.com/kelu124/echomods/tree/master/goblin). Make it yourself! Part of the price here includes the fab fees and my own costs.

How does it work ?

Schematics are here.Here's a small graph for the link between ICs:

Schematics

Shipping

• Now that the pHAT design is stabilized, it's being produced by MacroFab - which does the fulfillment.
• Attention: The board comes without headers/jumpers .. up to you to put yours!

Disclaimer

This project is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE.