Ultrasound Imaging with Raspberry Pi

 writes on the Hackaday blog:20170529_203924_notes

Best Product Entry: A HSDK for Ultrasound Imaging

As an entry into this year’s Best Product portion of the Hackaday Prize, [kelu124] is developing a hardware and software development kit for ultrasound imaging.

Ultrasound is one of the primary tools used in modern diagnostic medicine. Head to the doctor with abdominal pain, and you can bet you’ll be seeing the business end of an ultrasound system. While Ultrasound systems have gotten cheaper, they aren’t something everyone has in the home yet.

AD9200

[kelu124] is working to change that by building a hardware and software development kit which can be used to explore ultrasound systems. This isn’t [kleu124’s] first rodeo. HSDK builds upon and simplifies Murgen, his first open source ultrasound, and an entry in the 2016 Hackaday prize. [kelu124’s] goal is to “simplify everything, making it more robust and more user-friendly”.

setup.png

The system is driven by a Raspberry Pi Zero W. A custom carrier board connects the Pi to the pulser block, which sends out the ultrasonic pings, and the analog front end, which receives the reflected signals. The receiver is called Goblin, and is a custom PCB designed [kelu124] designed himself. It uses a variable gain amplifier to bring reflected ultrasound signals up out of the noise.

 

Ultrasound Imaging with Raspberry Pi

“Ye Olde Nowt” Raspberry Pi Game Console

From Radomir Dopieralski on Hackaday.io:

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Ye Olde Nowt

Yet another pi zero retro handheld game console.

Quantity Component name
1 Raspberry Pi Zero
1 1.5″ SSD1351 Display Module
2 Small SMD Speakers
2 33nF SMD Capacitor
2 1µF SMD Capacitor
2 150kΩ SMD Resistor
2 270kΩ SMD Resistor
6 Buttons
6 90° Buttons
1 ZeroLiPO
1 1S LiPo Battery

8650341498134170367

“Ye Olde Nowt” Raspberry Pi Game Console

High-speed ADC pHAT for Raspberry Pi

kelu124 designed this board to add high-speed analog inputs to the Raspberry Pi:
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20Msps+ ADC RaspberryPi extension

We haven’t tapped yet into the full potential of the Raspberry Pi in terms of ADC. Some have shown that the first gen of Raspberry could go to 10Msps [..] My take is that the new Raspberry Pi’s  can surely go above. And I want to try it, either with this old CA3306E or with more recent kick-ass ADCs.

The design files are available on GitHub:

github-small kelu124/bomanz

High-speed ADC pHAT for Raspberry Pi

Smaller version of GameBoy Zero

moosepr designed this small and simple GameBoy-style device using the Raspberry Pi Zero:

7352071488543051372.jpgGameBoy Zero, but smaller!

I’m not overly fond of ‘rats nest’ wires, and I have a bit of an obsession with making things as small as possible, so this is what I came up with.

Tis just an ILI9341 screen, a Pi Zero, 2 navi switches (5 way), and a battery (with charge/protect circuit)

petay has shared the board on OSH Park:

GBz

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Order from OSH Park

Here the board is in action:

 

Smaller version of GameBoy Zero

Raspberry Pi Zero W desk clock

Nick Sayer created a LED desk clock driven by NTP on a Raspberry Pi Zero W:

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Raspberry Pi Zero W desk clock

When I was in college, I bought and built a Heathkit GC-1000 WWV clock. Since then, I’ve been somewhat interested in accurate time measurement. I recently designed a GPS driven clock, but sometimes your local WiFi reception is better than GPS (say, indoors). For those circumstances, a clock that gets time from NTP over WiFi would be preferable. The newly released Raspberry Pi Zero W makes this quite a bit simpler to achieve
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Raspberry Pi Zero W desk clock

IceZero FPGA Board for Raspberry Pi

Black Mesa Labs created this board that adds a Lattice FPGA to a Raspberry Pi:

ice_zero_with_pi_zero

IceZero FPGA Board for RaspPi

BML has been very much enchanted with the Lattice FPGA boards for Raspberry Pi, IcoBoard , BlackIce and IceHat. The IceZero board is a BML creation that attempts to combine the best features of all 3 boards into a single design.

screenshot-at-2017-02-11-12-23-44

IceZero features common with other designs

  • Fully Open-Source Hardware and Software Design.
  • Lattice ICE40HX4K FPGA that supports Clifford Wolf’s Project IceStorm tool chain.
  • Interfaces to Raspberry Pi 2×20 GPIO Header for both power and bus interfaces.
  • PROM programmable directly from Rasp Pi, no JTAG programmer required.
  • External SRAM, supporting soft CPU core designs ( code execution ).
  • Extra large SPI PROM, supporting soft CPU core designs ( code storage ).
  • Industry standard PMOD expansion headers

sump2_on_ice_zero

IceZero features that are BML specific

  • Mesa Bus Protocol 32 MHz SPI link between CPU and FPGA.
  • 2-Layer PCB design. Orderable via OSH-Park or Gerbers for Downloading.
  • FTDI 1×6 USB Serial Cable header for use with PC instead of Pi ( or as a soft CPU debug Trace Port ).
  • Single Pi UART plumbed to FPGA for muxing to multiple external serial devices.

BlackMesaLabs has shared the board on OSH Park:

bml_ice_zero_19_02.zip

BML IceZero Lattice ICE40 FPGA for RaspPi

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Order from OSH Park

IceZero FPGA Board for Raspberry Pi