!mtSnuCHbcPbERguOKO:matrix.org

usdevkit

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Chat room for [ultrasound imaging dev kit](https://hackaday.io/project/10899-a-hsdk-for-ultrasound-imaging).22 Servers

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23 Jul 2021
@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu there are some chips that can act as FIFOs, so that could be a solution 17:50:08
@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu you connect the FIFO buffer between the RPi and ADC, and you get the RPi to read the FIFO by burst when not shipping through wifi 17:50:30
@_slack_usdevkit_U028V9ZMXKP:matrix.orgbrycedrechselsmith thats a good idea, its essentially what I was trying to do with the ping pong buffer, i hadn't thought to put physical hardware in that position 17:52:04
@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu hardware is nice 😉 17:52:18
@_slack_usdevkit_U028V9ZMXKP:matrix.orgbrycedrechselsmith in answer to your earlier question about hardware for demod, I suggested that but was shot down... 17:53:18
@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu to be honest I'd go for a small, cheap FPGA (like the up5k i use and like) that would go between the ADC and the buffer, then buffer to RPi. 17:54:00
@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu trick is then when the RPi isn't sending to "size" the bandwidth required to read from the buffer 17:55:41
@_slack_usdevkit_U028V9ZMXKP:matrix.orgbrycedrechselsmith interesting, I really appreciate your help! 17:58:42
@_slack_usdevkit_U028V9ZMXKP:matrix.orgbrycedrechselsmith you've given me quite a bit to research 17:59:11
@_slack_usdevkit_U028V9ZMXKP:matrix.orgbrycedrechselsmith thanks 17:59:29
4 Aug 2021
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19 Aug 2021
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21 Sep 2021
@_slack_usdevkit_U02EKKJJTK8:matrix.organsuga joined the room.20:48:04
@_slack_usdevkit_U02EKKJJTK8:matrix.organsuga Hello 5M5PLH9S! I am interested in the un0rick and the lit3rick. I start to understand the components inside them and their role. However, I am totally noob in this field. Please, can you recommend some papers focusing on what to do with the obtained signals? I can understand that the sent and received signals are being compared. However, I cannot understand how it is exactly done. My interest is using the boards for NDT in porous materials or metals (e.g. detecting fractures). Best regards! 20:48:04
22 Sep 2021
@_slack_usdevkit_U02EKKJJTK8:matrix.organsuga Ok. 04:50:35
@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Hi 02EKKJJTK8! Welcome 😃 You have identified a first good page - I'd recommend going on to https://kelu124.gitbooks.io/echomods/content/RPI.html -- not exactly the same hardware, but it explains for example how to go from a single element signal to an actual, B-Mode image. 07:11:46
@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu In general, for NDT, only the A-line (aka the single line acquisition showed in the link you copied) can be used. 07:12:17
@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu See also https://kelu124.gitbooks.io/echomods/content/Chapter1/ndt.html for NDT 07:12:45
@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Some info too with a dual element NDT transducer at https://github.com/kelu124/echomods/blob/master/include/experiments/auto/20190329a.md 07:13:56
@_slack_usdevkit_U02EKKJJTK8:matrix.organsuga Perfect! Thank you so much for the references! 08:07:43
23 Sep 2021
@_slack_usdevkit_UGJ8GJGNR:matrix.orgjean.rintoul totally. I have somehow got deep into this other project which involves US now… probably updates soon. 17:37:39
24 Sep 2021
@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Let me know if you need anything else 😃 10:17:08
10 Oct 2021
@_slack_usdevkit_U028M4FEK8Q:matrix.orgadamsonjesse I added my friend David to the channel because he's going to work on the photo-acoustic stuff with me. 21:19:37
16 Oct 2021
@_slack_usdevkit_U02JDM6B7EV:matrix.orgmalek.bola joined the room.22:56:29
@_slack_usdevkit_U02JDM6B7EV:matrix.orgmalek.bola Hi friends! I am very happy to have come across this project. I am trying to set a little ultrasound lab and would be excited to set up one of these dev kits. I noticed that the modules page has some broken links for some parts and a few of the keys parents aren't acquirable (like the motherboard). Would anyone who ordered some parts recently mind sharing where they got everything? Would anyone here be interested in selling part of their old setup that they are no longer using? For context, I'm starting from scratch. So tips or hints on acquiring power supply's and transducers and everything else would be welcome. 22:56:29
19 Oct 2021
@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Salut 02JDM6B7EV! Welcome here :) Apologies stocks arent restocked, but chips crisis.. anyhow. I can have a look at possible stocks by Sunday, will be back to you if there is any opening on my side. 13:15:19
@_slack_usdevkit_U02JDM6B7EV:matrix.orgmalek.bola Hi Kelu! Thanks for the response. I was also wondering if you have any instructions on an open source transducers? Is it possible to acquire parts to build the transducer from piezoelectric materials? 19:28:35
20 Oct 2021
@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Thats a good question, havent investigated it myself, happy to get your viens if you do :) I've been searching either from supplier or from hacking probes open. 07:47:50

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