!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).1 Servers

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Timestamp Message
18 Sep 2019
17:39:21@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Another goodie for debugging.. an impedance analyser. Here hooked to a double peak transducer. 50$ on eBay makes it useful to check piezos connections.. and for reverse engineering as well :)
20 Sep 2019
14:46:38@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu changed their profile picture.
27 Sep 2019
17:17:25@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Hi there. Good to read from you. Would you be in a position to share previous experiments JSONs for reference?
5 Oct 2019
03:11:01@arhik:matrix.orgarhik joined the room.
7 Oct 2019
08:53:05@_slack_usdevkit_ULYB25AMS:matrix.orgwotlr6427 Thank you for your kind reply.
9 Oct 2019
19:33:03@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu For pyexiv, the solution is to install the package, the following works on my machine: sudo apt-get install libexiv2-dev python-pyexiv2
16 Oct 2019
06:03:16@_slack_usdevkit_ULYB25AMS:matrix.orgwotlr6427 Thank you so much for your help. I was wondering if we could use the source you gave us to connect to Bluetooth, and if the source you gave us could also function as Bluetooth.
21 Oct 2019
10:54:31@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Thanks T ri for the video https://www.youtube.com/watch?v=S8_0MuVqFJA 😃
23 Oct 2019
18:14:33@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Hehe good news, the up5k board seems up and running ! Details on acqs - https://github.com/kelu124/echomods/tree/master/matty/20191023a - there was a last hardware bug 😅 Acquisitions of 300us at 64msps, 12bits, seem to work fine 😃
29 Oct 2019
01:13:28@_slack_usdevkit_ULYB25AMS:matrix.orgwotlr6427 Thank you so much for your help. I was wondering if we could use the source you gave us to connect to Bluetooth, and if the source you gave us could also function as Bluetooth.
04:48:55@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Ooops did not see the previous message
04:49:11@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Theorically yes, as the raspberry can do Bluetooth
30 Oct 2019
03:19:59@_slack_usdevkit_ULYB25AMS:matrix.orgwotlr6427 Thank you for your answer. sudo apt-get install libexiv2-dev python-pyexiv2 The following error occurs even when installing . Can you help me with why?
03:20:23@_slack_usdevkit_ULYB25AMS:matrix.orgwotlr6427 Thank you for your answer. sudo apt-get install libexiv2-dev python-pyexiv2 The following error occurs even when installing . Can you help me with why?
07:20:23@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Please don't copy the threads on the "general" channel to keep a clean channel 😃
07:20:56@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu I would encourage you to learn a bit about python.. basically the error says that there is no "image" folder .. so you may want to create one
09:25:52@_slack_usdevkit_ULYB25AMS:matrix.orgwotlr6427 Thank you
4 Nov 2019
23:09:10@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Fpga rock: https://hackaday.com/2019/11/04/gigantic-fpga-in-a-game-boy-form-factor-2019-supercon-badge-is-a-hardware-siren-song/
5 Nov 2019
10:33:45@_slack_usdevkit_UPXTN4XT3:matrix.orgbennylaor joined the room.
10:33:46@_slack_usdevkit_UPXTN4XT3:matrix.orgbennylaor Hi all. I am new in the field of Ultrasonic testing but I believe it can be the best solution for checking the sample with cracks that I have. The sample is a ring at the diameter of 100 mm. The thickness is about 1.5 mm and the length is about 3.5 mm. There are two cracks inside at the sides. I am looking for a system that I can buy to measure the size of the cracks. Will be happy to get assistance offers or ideas.
17:20:20@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Hey Benny, glad to read from you. Yup, I guess ndt will help. Would you have a drawing of your ring with idea about the cracks positions ?
6 Nov 2019
07:57:37@_slack_usdevkit_UPXTN4XT3:matrix.orgbennylaor Hi. Attached you will find an image of the ring which has diameter of about 100 mm. I also added a Cross Section where I marked the two flaws/gaps. X-Ray is the best however it is very expensive and requires a lot of protection. I thought that Ultra Sonic will provide a good solution.
7 Nov 2019
06:55:09@_slack_usdevkit_UPXTN4XT3:matrix.orgbennylaor Hi. As I indicated the sample is steel and the two flaws are air. Hope it helps
8 Nov 2019
07:24:04@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu I guess ultrasound could help, you would need some good transducers I guess
07:24:28@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu FCS7CKPD, what do you think ?
08:25:16@_slack_usdevkit_UPXTN4XT3:matrix.orgbennylaor Hi. Can you please recommend one good transducer? I would like to start seeing the Echo pulse and to do some manual experiments. Is the kit that you made available to be purchased?
09:37:55@_slack_usdevkit_UFCS7CKPD:matrix.orgjarija joined the room.
09:37:55@_slack_usdevkit_UFCS7CKPD:matrix.orgjarija Hi Benny, your best option is to go for a 10MHz dual element transducer. On such thin piece of metal 5MHz transducers don't have enough resolution to detect the cracks you want to find.
11 Nov 2019
19:41:14@_slack_usdevkit_UPXTN4XT3:matrix.orgbennylaor Hi Jorge. Thank you for the information. If you have recommendation for specific probe I will be happy to hear.
18 Nov 2019
10:08:20@_slack_usdevkit_UFCS7CKPD:matrix.orgjarija Benny, DA-312 from GE Inspection for example. You can also use one of those Chinese ones. Yushi have good quality ones...

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