!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).14 Servers

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Timestamp Message
9 Mar 2020
18:57:19@_slack_usdevkit_URM2LCMHA:matrix.orgrichard.st-pierre Thanks for the script, Will try it soon.I can add more coax, how much delay would you like to add.?
19:15:05@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Nope, actually the receiving line of the piezo is weird to me, with this dip.. I can't find why this happens. It seems you have no echo before. Really strange.
19:15:19@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu I was wondering if you were already using one.
10 Mar 2020
13:37:16@_slack_usdevkit_URM2LCMHA:matrix.orgrichard.st-pierre Only seeing one pulse (still) at 320ns, with new script (10 lines).
13:54:26@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Weird. Can you share the JSON that came from this acquisition?
13:54:48@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Have you updated both files, and used the "-f file" option too ?
14:00:27@_slack_usdevkit_URM2LCMHA:matrix.orgrichard.st-pierre The pulser output waveform is directly into o'scope. Do you want JSON with probe attached?
14:08:12@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu With and without please, if you can.
14:09:02@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu normally, there should be 10 pulses spaced by 2.5ms ( with the 'interline' parameter delay)
14:09:15@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu so you should see 10 pulses
14:22:35@_slack_usdevkit_URM2LCMHA:matrix.orgrichard.st-pierre **-1.json is output into o'scope only. **-2.json is with probe attached into water. Both running 10 line script. console log shown in 10lines file.
14:24:24@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Cool. Did you see the 10 pulses while on the scope ?
14:34:30@_slack_usdevkit_URM2LCMHA:matrix.orgrichard.st-pierre No- single pulse over 10ms observation window
14:36:52@_slack_usdevkit_URM2LCMHA:matrix.orgrichard.st-pierre Single Seq trig, singe pulse in 10ms
19:24:58@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu I trust I found the glitch, old-er version of the single file lib. Attached are the pyUn0 lib, and the experiment file. I ran python2.7 pyUn0 -f 10lines.exp.md followed by python2.7 pyUn0 process which yielded the attached pictures.
19:25:17@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu The two files
19:25:30@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu The images.
19:26:21@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu With a line, and the different pulses (one per line)
18 Mar 2020
15:40:29@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Hey @room - hope you're all doing fine. Take care, don't take unnecessary risks !
17:27:07@_slack_usdevkit_U8Z3VB1T2:matrix.orgwlmeng11 Likewise! Hope everyone stays safe and healthy.
19 Mar 2020
11:21:36@_slack_usdevkit_UFCS7CKPD:matrix.orgjarija Locked up at home from Saturday... Hope all of you are healthy too...
21 Mar 2020
20:07:11@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Strangely enough, I've been trying this piece of code on a RPi4, I'm not getting multiline. Will open an issue on github here. Weird, it seems it does not recognize the command, and the blinky does not work there. However, when using a PiZero, it works. I'm confused - might be worth checking software side.
20:07:28@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu if you have any ideas 8Z3VB1T2 F90LJWTH KA33T8N9 I'm all ears.
22 Mar 2020
03:36:26@_slack_usdevkit_U8Z3VB1T2:matrix.orgwlmeng11 Are they running the same OS version? If not, maybe an issue with python version or libraries? Otherwise, maybe an issue with 64 vs 32 bit?
09:12:15@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu Nope, normally different OSes as well, and might be well 64 vs 32 bits. What's weird is that the multiline argument seems not to work: can get the test_spi function to work properly. Adding to issues.
09:12:50@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu As a side note, I tested different pulse widths ( https://github.com/kelu124/echomods/tree/master/matty/20200321a ) interesting results, changes in phase and amplitude of echoes 😃
28 Mar 2020
23:16:18@_slack_usdevkit_U8Z3VB1T2:matrix.orgwlmeng11 Love the new graph style 🙂
29 Mar 2020
08:31:33@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu got into using plotply
08:31:47@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu quite great to explore details !
18:31:47@_slack_usdevkit_U5M5PLH9S:matrix.orgkelu 8Z3VB1T2 demo at http://192.168.1.83:8501/ 😉

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