**** BEGIN LOGGING AT Sat May 23 03:00:00 2020 May 23 03:00:57 I contacted Seeed and there is no case in the works May 23 03:01:33 What do they thing I put inside a bread wrapper.. May 23 03:01:45 bread? May 23 03:02:22 Stromans Bread May 23 03:02:28 I have a 50' long camera. I want to test it w/ the BBGW but... May 23 03:02:52 I have not reversed engineered it (yet). May 23 03:03:05 it may be difficult. Are you guys in? May 23 03:03:10 50' take it out to the BBQ May 23 03:03:28 I can spy on you from 50' away! May 23 03:03:30 Bary Manilow May 23 03:03:48 Poor Barry. May 23 03:04:04 What? about Barry May 23 03:04:17 Nothing. I just feel bad for him. May 23 03:04:25 He is Barry. May 23 03:04:39 Clarinet, right? May 23 03:04:42 OK. I like his 70" & 80' music May 23 03:04:55 Singer May 23 03:04:57 I know. May 23 03:05:10 He plays the clarinet, though. Right? May 23 03:05:17 Not the tuba! May 23 03:05:20 Udnno May 23 03:05:29 Let me research him again. May 23 03:06:13 B is still alive? I thought he was in his 70's May 23 03:06:28 I know and in Las Vegas! May 23 03:06:49 He is jammin' in the LV, Bro-cow-sky. May 23 03:06:58 What brand of SD-Card to you use? Yes, he's older like me. May 23 03:07:04 Ha. May 23 03:07:11 Let me see. May 23 03:07:19 San disk. May 23 03:07:27 It works! May 23 03:07:32 Earth Wind Fire - Chicago May 23 03:07:44 Oh well you can record data to your SD instead of your eMMC then you can SD net it or whatever. May 23 03:07:45 I cannot get over it. Poor Manilow. May 23 03:08:09 I need to call him up and tell him to not play in LV any longer. May 23 03:08:20 I never really listened to him, then again most music I found irritating when I was young. May 23 03:08:37 I have had read good luck and speed usinf Amplin 32GB May 23 03:08:52 Music. Aw. May 23 03:09:18 Good deal you can get 10 for 2\$25 May 23 03:09:21 set_ for your agransizement thought you might find this interesting https://www.instructables.com/id/Spherical-Quadruped-Arduino-Robot/ May 23 03:09:23 So much about music that a person like me will never know. Highs, lows, music engineering and so forth. May 23 03:09:52 Way back I used to work in a recording studio May 23 03:10:02 * GenTooMan use to mix music but his hearing went south and he got sick of it. May 23 03:10:13 Mixer! May 23 03:10:20 Mixers! May 23 03:10:26 Mix masters? May 23 03:10:30 run the mixer you know orchestra's bands boring speakers.. May 23 03:10:41 Oh. May 23 03:10:44 I loved musicals. May 23 03:11:08 Chitty Chitty Bang Bang? May 23 03:11:12 Sorry vacuum tube mixers and 12 channel tape decks May 23 03:11:32 Vacuum tubes. May 23 03:11:42 The Sound of Music May 23 03:11:45 Oh. May 23 03:11:47 That is it. May 23 03:11:57 I could not remember the name. May 23 03:12:02 Yes vacuum tubes May 23 03:12:09 So, like usual, I blurt things out. May 23 03:12:31 Top shelf Gold Lion vanuum tubes May 23 03:13:02 Or Sovtek May 23 03:13:16 I remember my fascination of breaking things when I was "young" and it was about TVs, i.e. the kind w/ Tubes. May 23 03:13:23 Yes Sovtek is from Russia May 23 03:13:54 How do you use mkvtoolnix? May 23 03:14:03 I run it but nothing happens. May 23 03:14:15 the sound of musac! May 23 03:14:17 Do I need to use mkvmerge? May 23 03:14:25 no but it's handy May 23 03:14:29 Okay. May 23 03:14:32 What the high high voltage on the scerrn. your hair will stand up. May 23 03:14:57 I used to hit 'em w/ baseball bats. People used to hate the sound. May 23 03:15:21 umm that's is kind of wasteful May 23 03:15:31 Oh. "the sound of TV." How I miss it. May 23 03:15:32 Whatch the high high voltage on the screenn anode. your hair will stand up. May 23 03:15:38 Ha. May 23 03:15:50 Smash, crash, boom. May 23 03:16:03 I am very wasteful. May 23 03:16:15 But not w/ my BBB merch. May 23 03:16:18 I use to put aluminium foil on the screen when my brother fell asleep watching TV and he would think it was off... May 23 03:16:26 I make 'em last forever, hopefully. May 23 03:17:08 after that he left the light on ... May 23 03:17:17 Ha. Is that normal? May 23 03:17:42 Well having 20kv on the TV screen and shocking you ... yes. May 23 03:17:50 The normality of that is not. May 23 03:17:58 That is not normal. It shocked him? May 23 03:18:18 "You are a bad man, Mr. Jones." May 23 03:18:48 Yes.. that's normal remember the electron gone is pretty high voltage to work.. so the screen gained a nice high voltage on it. May 23 03:18:58 Dang. May 23 03:19:13 I got shocked one time on a Zenith TV I was standing then I was sitting and my finger smoked May 23 03:19:18 Some real bzzt-rkers in your fam. May 23 03:19:39 bzzt, bzzt. May 23 03:19:54 Yea. May 23 03:19:56 I got beef man. May 23 03:20:09 The irony is that circa 2002 they came up with a whole new electron gone for CRTs. It never was introduced because CRT's were being phased out. May 23 03:20:14 GenTooMan, you told me to plug in the LED to the 12v battery as is. May 23 03:20:20 gun == gone May 23 03:20:20 It shot sparks everywhere. May 23 03:20:22 Also burned out my DVM May 23 03:21:07 At least, at least, I did not get burned to smitherenes. May 23 03:21:15 that's a good start. May 23 03:21:24 That is a terrible start. May 23 03:21:35 Bzzt, splash. May 23 03:21:42 Sparks? May 23 03:22:54 Yes. May 23 03:23:03 A splash of sparks that looked like lava. May 23 03:23:22 Fire Extinguisher May 23 03:23:34 Nope. It died before it hit the ground. May 23 03:24:06 I once stuck some metal in the 240AC inlet. May 23 03:24:15 Oops. Talk about some hot lava. May 23 03:24:31 GenTooMan what are we going to do witg set_? You did WHAT? May 23 03:24:39 That shot out like it was ready to kill a man. May 23 03:24:54 I got scared. Yea. What are you all going to do w/ me? May 23 03:25:37 Dude, think of the burning and scaring that would have taken place w/ that metal in the 240VAC inlet gushing hot arc out. May 23 03:25:47 Yikes. May 23 03:26:05 I knew right then, when I blacked out, that it was not a joke. May 23 03:26:06 Why? May 23 03:26:34 Oh. Set _ toast May 23 03:26:39 Accident. I was removing a air outlet from the wall in an older, dumber house. May 23 03:27:32 The air outlet from the gas dryer flung into the 240VAC socket and it had a meat hook on it. May 23 03:27:40 bzzt, bzzt. May 23 03:27:53 Have you seen that arc before? May 23 03:27:58 240VAC? May 23 03:28:24 Yea dangerous it's the amps in that case May 23 03:28:29 Maybe on TV or video or something...b/c it will make you black out and go blind briefly. May 23 03:29:07 It was like when you go into the mfg. sites and they all have that sign: "Do not stare at the arc." May 23 03:29:30 Flash, splash, spark, blindly. May 23 03:29:31 Ha. May 23 03:29:34 set_ do you have the house of horrors ? May 23 03:29:43 Yes, mostly. May 23 03:30:24 It is a scary place to be...I chose to have a very small corner of this place for just me and my electronics. BBB and such. May 23 03:30:37 The rest of the house is ready to go. May 23 03:31:00 Live by yourself May 23 03:31:06 Hell yea! May 23 03:31:12 All by my lonesome. May 23 03:31:26 I used before my stroke May 23 03:31:47 I am sorry to hear that mate. May 23 03:31:56 Are you exercising? May 23 03:32:22 You know, a little lifting, some high steps, and/or push ups? May 23 03:32:41 Used to May 23 03:32:53 We can probably make a BBB tell-all that makes it so we can track our movements. May 23 03:33:21 BBAI May 23 03:33:58 I never really understand why people were so big on those step things. May 23 03:34:29 Well I'm gonna make like a tree and leaf for tonight May 23 03:34:32 It is like just walk. Do not account for it. Who cares? I did not really get it. I do like the GPS stuff though. May 23 03:34:34 No. May 23 03:34:49 Fine. May 23 03:34:53 Boo! May 23 03:43:42 I May 23 03:43:51 Hey. May 23 03:43:58 I've seen 480 arc is and 4060 arc? :D May 23 03:44:06 Yikes. May 23 03:44:12 Blind be with you. May 23 03:45:14 Well in 1977 a snow storm hit PA and dumped freezing rain along with ice and knocked power out for 50% of the state. I was pretty young but I remember watching the power lines fling around on the road for weeks... May 23 03:46:00 Ha. Yea. I remember those movies on why to not touch downed lines. FryZilla. May 23 03:47:07 Hell, I remember one dude I ran w/ for a while. He kept jumping when he ran and would touch random things. Once I saw him jump up to touch a downed line. I felt bad. I think they had to cart him off the parkside. May 23 03:47:53 Luckily, gravity must have saved him or something. May 23 03:47:57 I really do not get it. May 23 03:49:12 GenTooMan: Is there a trick to making scp work on the BBB? May 23 03:54:22 I got it working before but now, I am at a stalemate. May 23 03:55:17 Anyway, I will figure it out one day. May 23 03:56:34 I see that the mkvtoolnix needs the -gui following suffix to work. Is this true? May 23 03:59:03 Oh...that is only for the gui. I found the option-order and examples section. May 23 03:59:22 I can put some fun audio w/ the bot humor now. May 23 04:16:18 mkvmerge and mkvinfo and mkvextract are you basic tools. In any case if you want to have video and add sub titles MKV is better than using Applese MP4 format May 23 04:17:05 you know "Yet again the robot blew up... plus to plus minus to minus" kinds of commentary. May 23 04:18:18 Yep. May 23 04:19:02 Testing will ensue but not tonight. It is time for a long awaited sue-eee! I mean, sleep. May 23 07:27:10 it appears old beagleboard hardware is not ready out of the box for the current debian image May 23 07:27:40 https://paste.debian.net/hidden/01650545/ May 23 07:28:09 but the Angstrom image loads May 23 08:17:45 sorry, this is all too ancient for me to have any useful feedback :D May 23 08:19:28 other than that it's presumably incompatibility with ancient bootloader on NAND versus new image on SD card, but I don't know the way to deal with that on old beagleboards May 23 10:05:15 that log shows the board booting from nand and encountering errors May 23 10:06:05 since u-boot and kernel are dated 2011, my guess would be bitrot after sitting on a shelf for ~10 years May 23 14:41:11 zmatt I do have 2 beagbleboards I could send them too you for fun :D May 23 14:41:19 nah May 23 14:41:31 darn... May 23 14:41:33 :D May 23 14:44:58 I hate to e-waste them. May 23 14:49:51 hmm, the TDA4VM seems like a cute little SoC May 23 14:54:55 dual-core cortex-A72, 3x dual-core cortex-R5F, C7x DSP, 2x C6x DSP, 3d gpu, vision-related accelerators, 8MB SRAM, 4x pcie, 8 ethernet interfaces, 16 CAN interfaces, and most of the usual stuff May 23 14:56:30 two quad-core PRU subsystems May 23 15:01:41 that is a little SoC? You could hang a GPU off that thing. May 23 15:02:37 (another GPU on the PCIe) anyhow obviously not for "small stuff" May 23 15:18:12 ;) May 23 15:18:50 the current TRM has 15556 pages, but many chapters are still to-be-written May 23 15:21:11 something for cars, obviously. autonomous stunt driving and the like May 23 15:24:08 I bet the 3 cortex-r5 clusters are running in lockstep May 23 15:25:35 they can be configured to run in lockstep or independently May 23 15:25:54 the two cores of each cluster that is May 23 15:26:06 (for each of the three clusters independently) May 23 15:26:29 Interesting, and 3 of them means a 2 vote idea for AI May 23 15:26:38 no no May 23 15:27:07 there are three independent cortex-r5 subsystems, each containing two cortex-r5 cores that can run in lockstep May 23 15:27:21 right and why 3 of them? May 23 15:27:59 why not? two on the "main island", one on the "mcu island" (which can be isolated for safety) May 23 15:28:55 isolated meaning what? May 23 15:29:10 meaning stuff on the main island can't fuck with it or cause it to crash May 23 15:29:21 no shared resources at all? May 23 15:31:09 I mean, it has ways of interacting with the main island May 23 15:31:36 such as simple message channels I presume May 23 15:32:26 yeah and a packet streaming interface. you could probably set up a shared memory region if you want to (but you'd need to think carefully about that I imagine) May 23 15:32:28 I've heard stories from people trying to isolate parts an soc, only to find that the shared interconnect could be tickled into locking up May 23 15:32:56 it has its own interconnect, but yeah if it accesses things on the main interconnect then that could be an issue you need to think about May 23 15:33:37 seizure in the SoC sounds like a novella May 23 15:33:41 own ram chip too? May 23 15:34:04 GenTooMan: sequel to savaged by systemd? May 23 15:34:17 it has 1.5 MB on-chip SRAM May 23 15:34:24 sorry, 1 MB May 23 15:34:25 * GenTooMan face palms snickering. May 23 15:34:42 and yes, that's a real book: https://www.amazon.co.uk/Savaged-Systemd-Erotic-Unix-Encounter-ebook/dp/B075DYXZW1 May 23 15:35:27 That's more than most small uC's flash memory. May 23 15:35:47 I think if you want more you'd need to go through the main interconnect (iirc partitioning of the LPDDR4 memory can be set up and then locked down), but like you said you'd need to weigh the benefit of having much more RAM against the potential risks of not saying within your own interconnect May 23 15:41:33 hmm processing stereoscopic image data seems to require a bit of processing power. May 23 15:42:27 I like how the TRM has a chapter-group dedicated to Time Sync, and the SoC actually has a "timesync event router" and "compare event router" May 23 15:45:02 why does this remind me of the song "am I in sync"? May 23 15:50:42 it seems they put a lot of ... interesting features in it. If they are targeting autonomy type uses (AI moving robots) then time sync is probably important. May 23 15:54:11 also for TSN (Time-sensitive Networking) obviously May 23 16:10:07 well I suppose coordination of timing information across and network is useful in industrial processes stretched across a kilometre as well. May 23 16:11:33 TSN is an evolution of AVB, which was designed for low-latency audio and video streaming (e.g. in broadcasting industry) May 23 16:16:23 well if you are doing security and back trace timing verification of events I can see that.. but not streaming random video. I would guess virtual conferencing might benefit most with that. May 23 16:16:50 everything will be much better when we get SDT: software-defined time May 23 16:17:05 no, video broadcasting where you need guarantees, not merely best-effort May 23 16:17:47 there are no _real_ guarantees other than murphy's May 23 16:17:51 AVB/TSN lets you make reservations that, once granted, guarantee a certain bandwidth with a certain latency May 23 16:18:08 I mean, assuming the network doesn't fail obviously May 23 16:18:13 but independent of other network traffic May 23 16:18:22 kind of like usb isochronous transfers? May 23 16:18:28 yep May 23 16:19:11 so on an AVB network you could happily run your bittorrent client without any impact on your time-sensitive streams May 23 16:20:53 though automotive required even lower latencies for some stuff, so it also introduced packet preemption, allowing transmission of a normal packet to be paused to interject an ultra-low-latency control packet May 23 16:21:15 crazy people May 23 16:21:26 I'm never buying a car May 23 16:21:48 lol May 23 16:22:06 unless it's older than I am May 23 16:22:28 hey, it's obviously important to preempt your DVD playback packets for control messages to your electronic braking system ;-) May 23 16:23:01 why in the heck would you be routing DVD playback packets on the same network? May 23 16:23:04 I think I'd rather just run two wires May 23 16:23:27 GenTooMan: 17:21 <@zmatt> crazy people May 23 16:23:37 I think there's the issue, the amount of cabling in cars is getting kinda nuts May 23 16:23:51 that's because they forgot what the car was for. May 23 16:23:59 see above about me buying cars May 23 16:25:27 I suppose they are trying to distract the kids or something because "they get bored" and interject with "are we there yet?" questions. May 23 16:25:40 I'm not having kids either May 23 16:43:31 zmatt I think the reason the cabling is nuts is because they are trying to do too much. It's a serious case of not keeping it simple. May 23 18:12:23 uh. I'm debugging a friends bbb setup remotely and while we are sure we've installed the same image (emmc flasher iot image from april 6th), his board runs a bone- kernel and mine runs a TI kernel May 23 18:12:29 what's that about? May 23 18:12:54 no beagleboard.org image has shipped with a -bone kernel in many years May 23 18:12:58 so something fucked up May 23 18:13:13 it's even a fairly recent one... May 23 18:13:24 maybe he accidently flashed eMMC onto SD instead of the other way around? :P May 23 18:13:29 I've seen people somehow manage to do that May 23 18:14:08 4.19.120-bone50 or so, no idea how that ended up on this image? May 23 18:14:29 debian version is 10.4 May 23 18:15:39 ehm, maybe carefully check what was done step by step? because that's not a kernel that's installed by default after reflashing May 23 18:17:17 maybe also check the full filename of the image file that was written to SD card just to double-check May 23 18:18:14 or maybe the beaglebone is just haunted, ghosts could be causing this May 23 18:24:48 no, looks like he found some obscure document somewhere that told him to call some scripts like /opt/scripts/tools/developers/update_bootloader.sh --beta May 23 18:25:21 /opt/scripts/tools/update_kernel.sh --bone-channel –lts_4-19 May 23 18:25:23 3.2 P May 23 18:25:28 something like that May 23 18:26:31 lol, well there ya go May 23 19:33:08 zmatt: is that a persistent switch? Do I need to do something to revert it back to normal TI series kernels? May 23 20:19:49 thinkfat: update_kernel.sh will normally install the latest kernel of whatever series is currently active May 23 20:20:20 you can just change uname_r in /boot/uEnv.txt to the version of any installed kernel May 23 20:21:02 (update_kernel never removes kernels afaik) May 23 20:32:18 GenTooMan: Have you made mkvtoolnix cut out frames to save to file instead of entire video frames? May 23 20:33:55 For instance, I am trying to save my video as photos instead of video. So, I could save a photo every 15 sec. or however long from live video. Is that possible? May 23 20:36:41 I guess I would do that w/ ffmpeg and then replay or overlay the video w/ titles and such w/ the mkvtoolnix program. I got it. Forget it. May 23 20:37:16 I guess they call them stills. May 23 20:51:52 zmatt: would you have a hint how to make a systemd service start only after udev symlinks are there? May 23 20:53:33 set_ use ffmpeg to do that instead. May 23 20:54:04 thinkfat: https://pastebin.com/KXVdTNrL lines 51-53 May 23 20:54:25 set_ the other option is to use MPV find the frame you want and save it with the screen save key. Both work for me. May 23 20:55:06 thinkfat: it's also possible to add a dependency on specific devices May 23 20:58:01 zmatt: I read something about TAG += "systemd" and ENV{SYSTEMD_WANTS} but I didn't get it... May 23 20:58:47 SYSTEMD_WANTS is a whole nother story, that's to specifically activate a service when a device appears May 23 20:59:29 TAG+="systemd" (in a udev rule) will cause systemd to create a systemd unit for the device May 23 21:00:13 which can then be referenced by dependencies May 23 21:00:20 I did. May 23 21:00:47 I am actually using ffmpeg to record w/ audio and titles and playback is done w/ VLC for now. May 23 21:01:42 Neat stuff. now, if I can only figure out how to make sure my recorded video is saved as stills. Much work, much work! May 23 21:04:03 set_ how is recorded video a still? you can have ffmpeg set a frame rate for the output video that is different from what it is reading though. May 23 21:04:30 zmatt: I believe ptp4l better "Wants=network-online.target", too? May 23 21:04:50 zmatt: otherwise it might not find its device... May 23 21:04:52 -frames:d? May 23 21:05:00 thinkfat: that sounds odd to me May 23 21:05:02 Right. May 23 21:05:04 and unlikely May 23 21:05:39 But GenTooMan: I want my video to catch stills during its live recording and save that to a file. May 23 21:05:51 This is what I am trying to figure out. May 23 21:06:13 Would I need a button or a radio button or something? May 23 21:06:21 thinkfat: I have BindsTo= and After=sys-subsystem-net-devices-eth0.device May 23 21:06:41 and that's it May 23 21:07:09 and it has CAP_NET_RAW and CAP_NET_BIND_SERVICE capabilities May 23 21:07:19 set_ no... I think you don't understand how digital video works. First you need to set things so that it generates key frames on big enough changes. Then you just need to grab each key frame from the video and use those as stills. May 23 21:08:05 thinkfat: our ptp service doesn't have access to any device (DevicePolicy=closed) hence also no dependency on udev May 23 21:09:15 it does have dependency on a tiny utility that enables hardware timestamping on eth0 since that requires privileges in excess of the aforementioned May 23 21:09:16 Oh. So, w/ live video, there is not a way to generally/lazily take out photos/stills from the live video? May 23 21:09:27 Hmm. May 23 21:09:56 It has to be processed. Okay. I think I may have made a mistake. I can just take photo blasts or something. May 23 21:10:46 I reviewed ffmpeg recently on the options section and video in/out section. May 23 21:11:15 Anyway...you are right. There were no options but I can stop and start it. May 23 21:12:35 set_ you can get key frames I believe after you are done recording. Key frames specifically are complete image refreshes not just deltas of information. So I think it's possible to convert all key frames to images. May 23 21:13:27 set_ that would be the same as still images so whenever the thing is paused hopefully it makes a key frame. May 23 21:18:13 Oh. Hmm. May 23 21:19:13 Okay. So, I can stop the video feed, let it process, and then retrieve the frame(s), and restart over. May 23 21:20:06 I wonder if that is possible w/ Python. This will be a neat task... May 23 21:20:48 Or just using the command line, in a .sh script, might be easier. May 23 21:21:16 set_ it's better to do it from python ... a .sh script is yet another layer. May 23 21:21:50 I use ffmpeg at the cli and from python but the cli has it's own challenges. May 23 21:26:24 Okay. May 23 21:26:29 I will try w/ python. May 23 21:26:48 I need to plug in my speaker real quickly to test audio. May 23 21:32:25 Audio! May 23 21:37:57 Would I use pathlib in python for setting up the script? Blah. I will look for tutorials online. May 23 21:42:36 vlc has a couple of options under some other options. One option is psychedelic and another is Anaglyph 3D. The later is way cool. May 23 21:42:46 Way. May 23 22:16:07 zmatt: if you don't run phc2sys, having clock_realtime drift against the phc is normal, as I understand it May 23 22:16:20 zmatt: so the effect you've been seing was expected... May 23 22:16:56 thinkfat: clock_realtime is impossible to relate to anyway and doesn't really matter, its frequency depends on whatever ntp is doing May 23 22:18:00 zmatt: yes, and for a grandmaster clock, you'd configure ptp4l to use the local clock and phc2sys to sync the phc from clock_realtime May 23 22:18:08 the drift I was talking about was between the phc and CLOCK_MONOTONIC_RAW, which are both timers running from the same crystal oscillator (directly or via PLL) which should not drift, at all May 23 22:20:31 the reason I was seeing drift is because linux uses a fixed-point scaling factor to convert from timer ticks to nanoseconds. since (1 GHz / 24 MHz) has a factor of 3 in the denominator, there's rounding error in this scaling constant, resulting in frequency error May 23 22:21:46 using a 100 MHz (eCAP) or 200 MHz (PRUSS eCAP) timer fixes that problem since it makes the conversion to nanoseconds an integer factor May 23 22:26:28 so what I do avoids a proliferation of different timing bases that need to be somehow related, for me all important timestamps are in raw monotonic time: both audio timestamps and network packet timestamps May 23 22:27:20 and the job of the ptpd is to figure out how ptp time relates to the system's raw monotonic time May 23 22:28:35 (and raw monotonic time directly corresponds to the main oscillator rate hence the rate of every clock and hardware timer on the system) May 23 23:44:38 Okay. May 23 23:46:00 GenTooMan: I got the matplotlib writing files to the system, cv2 recording video, and python-ffmpeg doing something. I think it saves a file w/ a/v. May 23 23:46:26 Do you want to see the source? May 23 23:46:42 It runs, saves files, and I am stuck! May 23 23:46:47 Ha. May 23 23:47:07 It is just a bunch of source in a try/except clause. May 23 23:47:40 I can figure out what is happening but...oh hell. Please hold. I will post the source. May 23 23:56:08 https://pastebin.com/Xm7YQn4R is the source. If you need me to explain, which I doubt you do, I can. But...that is all for now. May 23 23:56:23 That is as far as I got. May 23 23:57:38 It is difficult. I need to know exactly what happens on my BBGW to promote findings but there is a drawback/fault. The server I have not created is in the way of my progression. May 23 23:57:41 You know? May 23 23:59:28 Now, I need to figure out how to interact matplotlib into ffmpeg. May 24 00:09:40 fyi, that is a mixture of different ideas from online sources. I almost got things tidy and set up. May 24 00:18:10 zmatt: I think I found the reason for my outliers May 24 00:19:15 zmatt: my grandmaster clock serves UTC time, that means the clocksource is disciplined by chrony to align to UTC. May 24 00:19:43 zmatt: and now and then chrony needs to adjust that clock, which in turn propagates to the ptp slaves May 24 00:19:58 naturally, since they need to be aligned, too May 24 00:22:26 hopefully that's just frequency-adjustments though? May 24 00:23:21 maybe it can be configured to smooth things out more May 24 00:23:40 do you need UTC time anyway? otherwise just serve an arbitrary timebase May 24 00:23:42 so, what I could do is feed my 10MHz OCXO, which is perfectly aligned to the GPS, to tclkin and use that as the clock source for the system... May 24 00:23:54 zmatt: yes, for my purpose I need UTC May 24 00:25:58 I'll check if chrony can be more gentle May 24 00:26:26 I mean, then your phc will need to be controlled to follow the system clock source, so then you'll still see oscillations due to that May 24 00:26:51 since using tclkin as system clocksource will mean that phc and system clocksource aren't frequency-locked anymore May 24 01:16:57 Calibration! **** ENDING LOGGING AT Sun May 24 02:59:59 2020