**** BEGIN LOGGING AT Wed May 13 02:59:58 2020 May 13 03:00:34 3 driver IC's DRV8432 an LM5010 for a gate and board PSU and a controller from the TI C2000 series. It's designed to operate to 50V May 13 03:02:33 I think it was the TMS320F280260 May 13 03:03:52 Yikes...nice. May 13 03:04:20 40A 50V so 2KW motor control? May 13 03:04:21 Well, what happened? May 13 03:04:28 I never finished it? May 13 03:04:30 Oh. May 13 03:04:41 Things come up. May 13 03:12:30 Life is one thing, other people is another. I'll keep it simple people were being a bit over the top in their demands, I tend to work myself to death. So you do the math. May 13 03:13:44 2 - 1 = table? May 13 03:14:16 All jokes aside, I think you are right. It gets difficult and odd working for people. May 13 03:41:01 time to rest May 13 08:09:45 Hello! I have a box of BBB's that i would like to either build a project out of, or just sell off. The first option is more applealing and for that i need to know the requirements for the power input options. The boards i got no barrelplug, no picture output and no micro-usb. Hence, only riding on a header that can be supporting power. The May 13 08:09:45 battery-way of powering it is not really an option. So what can i do with them?(about 100 units at the moment) May 13 08:09:58 sa0bib: they're not BBBs then May 13 08:10:13 they sure are, i have the reciept to prove it May 13 08:10:18 at best they're BBB-based third party clones May 13 08:10:26 but if they're not BBBs May 13 08:10:33 *but they're not BBBs May 13 08:10:39 that could be so, but i assure you they are. May 13 08:10:45 I assure you they are not May 13 08:11:01 and if they have been sold to you as "beaglebone black" then you've simply been defrauded May 13 08:11:29 well, they were ordered this way. May 13 08:11:36 from whom? May 13 08:12:26 you have photos of the boards you have? May 13 08:12:51 sure! i can put some up. if they are fakes, this explains more than i knew earlier. May 13 08:12:59 a beaglebone black has 5V barrel connector, micro-HDMI output, and mini-USB-B connector May 13 08:13:17 I have those as well.. ill put them side by side May 13 08:14:39 even more important than the connectors: what's the part number on the SoC? AM335xBZCZxxx what are the "x"s ? May 13 08:17:30 I've seen boards be sold as "beaglebone black" by unscrupulous parties which were BBB-derived custom boards designed for integration into specific devices (namely bitcoin miners) and had been completely stripped-down of anything that wasn't strictly necessary for the application May 13 08:17:59 which makes them close to useless for any purpose other than similar integration projects that happen to have the same needs May 13 08:20:50 well..that could fit my needs pefectly. May 13 08:21:33 well one of the things downsized was the SoC itself, hence my question about its part number (or a photo) May 13 08:26:37 Here are some shots: https://a.uguu.se/jqUBi3XerLTN.png - https://a.uguu.se/ELcMIJF0yBlw.png May 13 08:28:24 what on earth are these boards May 13 08:29:02 can you take more complete pictures of both sides? May 13 08:29:40 sure May 13 08:33:56 they look like an old BBB revision (A6A or older) May 13 08:34:13 with a lot of missing components for the second one May 13 08:36:23 old version would be highly likely. this is what i got. have to move out to get better light May 13 08:36:24 https://app.unsee.cc/#0873c9d5 May 13 08:37:53 https://app.unsee.cc/#c6ef1b22 May 13 08:38:08 this is what i can get out of a old phone-camera May 13 08:40:57 rev A5B or rev A5C May 13 08:41:13 anyway, the plan was to put them whatever amount of units i can fit on a rack-shelf, power it up and make it work.lt it work. another option is for it being a very small (and cheap) option to use for light coms. May 13 08:42:12 thanks! do you have a header diagram where to power the units from the cape connector? May 13 08:42:13 yeah the stripped one doesn't seem too severely stripped.. you still have micro-SD for reflashing May 13 08:43:11 sa0bib: I've made an extensive pins spreadsheet: https://goo.gl/Jkcg0w ... the P9 and P8 tabs give a compact but detailed overview of the two expansion headers May 13 08:43:12 if they were lacking that, i would think they are ready for recycling right? May 13 08:44:01 well no, it just further complicates use May 13 08:44:54 and you still have the full-featured SoC, albeit an old experimental part (XAM3359A) rather than the production part (AM3358B) May 13 08:45:42 the one with parts missing is still funky though.. they're clearly not desoldered, so it must still be a custom-produced board based on the BBB's design files May 13 08:46:01 I wonder what's been programmed into their EEPROM May 13 08:46:10 (for board identification) May 13 08:48:26 sa0bib: note that for powering the BBB via P9 it's recommended to use both P9.01 and P9.02 for ground and both P9.05 and P9.06 for 5V, since the theoretical peak supply current of the BBB could exceed the maximum per-pin current rating of the header... though in practice you can usually get away just fine with using only one pin each, especially for experimentation/prototyping May 13 08:50:09 so like, cut the end of a spare usb cable, solder the ground and 5V wires onto a 3-pin header (leaving the middle pin unused) and you can stick that into P9 (either 01/03/05 or 02/04/06) May 13 08:51:11 oh just in case: those pin diagrams are for top-view of the BBB, oriented with the ethernet connector facing up. P9 is then the connector on the left, P8 is on the right May 13 08:51:56 Oh this is great! Thanks for the spreadsheet and the information. This is really helpful. May 13 08:52:45 if you google "BBB expansion headers" you can definitely find more overviews, though I think you'll have a hard time finding one with the detail of mine ;) May 13 08:55:13 this is pretty much what i need! :) lastly, would you consider them clones? and how much powerdraw would the board max out? 5V/2A ? May 13 08:56:33 sa0bib: beware that these boards have only 2GB of eMMC hence the latest IoT image won't fit. my recommendation would be to either use the latest console image (which will fit in eMMC with copious free space) or wipe eMMC and boot from SD card May 13 08:56:57 5V/2A is the input limit yeah May 13 08:59:34 and not sure what these boards are, but the missing components imply custom production based on (rev A5B/A5C of) the BBB's (publicly available) design files, probably with just a BOM change and nothing more. the other board could be an official A5B/A5C but if it's part of the same batch then perhaps not May 13 09:00:58 it could even be a custom run from an official manufacturer? no idea May 13 09:02:15 They are probably form diffrent batches, the "new" ones with less onnectivity is still in its packaging. i found 500pcs ish, and gave most of them away to people who could make use of them. dont have a clue whats on the eMMC. i could dump it if there is a intrest of it. May 13 09:03:32 hopefully they are going to either a single rack or to radio-enthusiasts for aprs nodes. if so, i would be happy to give them away since that would serve the whole community in the end. May 13 09:03:32 sa0bib: if you do decide to run from SD card, don't forget to wipe eMMC (sudo blkdiscard /dev/mmcblk1) after booting from SD card (which, depending on what's on eMMC, may require holding down the S2 button during power-on the first time... let go once the power led turns on) May 13 09:04:50 since booting from SD card with an ancient system (more specifically an ancient bootloader) on eMMC can cause problems ranging from boot failure to subtle failures and misbehaviour due to the old bootloader not being able to correctly interpreter the newer config file May 13 09:05:11 and no I don't think imaging eMMC is of any interest, I'd just wipe it May 13 09:05:21 I don't think anyone's keeping a museum of ancient images ;) May 13 09:06:31 i would be happy to see less junk on my drives, and much less on the internets :P May 13 09:06:43 and it sounds like the full-components BBB is probably a real one then, used for prototyping, and the stripped-down ones are a custom production batch that was never used for some reason May 13 09:06:55 hopefully that reason isn't a production mistake May 13 09:07:41 the price of the missing components-one were roughly 45% less, also a larger order though. May 13 09:08:14 if you need a random application: look up BeagleLogic: it can turn a BBB into a 12-channel (or 14-channel if booting from SD card) 100 Msps logic analyzer May 13 09:08:43 will do! May 13 09:09:21 which is something that may be easier to find end users for than a weird stripped-down version of an old BBB revision :) May 13 09:11:21 (just be careful in its use since without an input buffer you're connecting directly to processor pins, hence voltage limits must be strictly adhered to) May 13 11:17:07 zmatt: Thanks for the shout out :) May 13 11:17:21 (BeagleLogic developer here) May 13 11:20:08 Abhishek[m]_: it's just a really neat BBB application that's not something you can expect to do on any of the numerous other ARM boards out there :) May 13 11:36:24 zmatt: this uio stuff is a bit weird. I get only one interrupt signaled, once, then never again May 13 11:36:45 zmatt: but I see the gpio toggling, so the device is definitely signaling irqs.. May 13 11:37:56 thinkfat: are you reenabling it? May 13 11:38:35 zmatt: I'm writing '1' to the device... May 13 11:38:54 zmatt: actually, just 1, not '1' May 13 11:41:28 https://pastebin.com/w42Ti0Hz May 13 11:42:00 (quickly adapted from my C++ code, hopefully without introducing mistakes) May 13 11:43:00 ah, wait a moment. May 13 11:43:35 I need to unmask _after_ I release the int condition May 13 11:43:39 boy, dummy May 13 11:43:54 level-triggered irq 101 fail May 13 11:46:29 https://pastebin.com/1QtGLz23 May 13 11:47:21 (and instead of "when fd readable" you can just block on uio_wfi of course) May 13 11:55:32 zmatt: I see someone understands that "sizeof" is not a function ;) May 13 11:55:49 better version: https://pastebin.com/x0sUKmKa May 13 11:55:52 lol yes May 13 12:03:40 thinkfat: I know my C (and to fair extent C++) reasonably well, including the magificent beauty of C declarations ;) have I ever shown you this piece of art I've found in some code I've written? => https://pastebin.com/57Q3Uaff May 13 12:04:30 C++ has more dumb shit with parentheses though, like decltype(x) and decltype((x)) are both valid but mean different things May 13 12:04:48 (where x is an identifier) May 13 12:17:45 now it goes... May 13 12:30:02 and it actually looks reasonable. a bit noise in the 100ps reading, but that's OK May 13 13:24:49 what's the "best" way to add a RTC to the BBB? May 13 13:25:53 Parduz: just connect some low-power rtc via i2c May 13 13:26:21 nxp pcf8523 for example May 13 13:26:45 assuming you mean an rtc that keeps running while the BBB is off May 13 13:26:55 otherwise, the BBB already has one May 13 13:50:24 yup. the idea is to keep the calendar/clock while off May 13 13:53:35 is the RTC Cape any good? https://elinux.org/RTC_Cape May 13 13:56:14 is it still available from anywhere? May 13 13:56:42 you could just get something like https://www.adafruit.com/product/3295 May 13 13:57:27 or any other i2c rtc breakout, provided it supports 3.3v logic May 13 14:02:25 "s it still available from anywhere?" dunno, but the boss will just look at the schematics and decide if adding it (in some form) to our "custom cape" May 13 14:12:47 any experience with adding an RTC before? May 13 14:13:17 just follow the RTC's datasheet probably May 13 14:13:39 right but most people don't so... May 13 14:13:45 :D May 13 14:13:59 yeah, not hugely complicated. only pitfall maybe is the load capacity of the crystal for the clock, unless you use something with an integrated MEMS thingy May 13 14:14:29 oh, another pitfall is actually the backup battery threshold May 13 14:14:49 I'm just a programmer. Boss builds (and sells) electronics from 40 years ago, i think he know what to do May 13 14:15:14 OK probably not a big deal then May 13 14:16:12 but still i'd like to push him in the right direction, as he tends to be pretty "old school". What i mean is that if there's something that linux/BBB is already able to read is better :) May 13 14:16:32 I'd just put a PCF8523, there's even a dtsi snipped that you include in your cape overlay to hook it up. May 13 14:16:40 Parduz: BBB isn't really relevant here, just use any i2c rtc which is supported by mainline linux May 13 14:17:18 Yep, that's the idea, @zmatt, and the reason i asked here :) May 13 14:18:48 Roger to the PCF8523, thinkfat :) May 13 14:21:27 hey every one , i have a small issue , May 13 14:23:04 i have the serial parameters , like Baud rate, data bits, parity bits, stop bits , but i don't know how can i send a test massage May 13 14:24:41 echo "test" > /dev/ttys0 maybe? May 13 14:25:05 combined with stty, yes. or just use picocom/comparable things. May 13 14:25:41 I like picocom for the uart test jobs May 13 14:33:04 picocom to test the Message if it revived ? May 13 14:34:07 received* May 13 14:34:29 send and receive May 13 14:36:13 i means which Python Code can i wight , iam beginner with BBB and Python (: May 13 14:38:09 i means which Python Code can i write , i'am beginner with BBB and Python May 13 14:39:52 Maria23: https://pyserial.readthedocs.io/en/latest/shortintro.html May 13 14:40:04 picocom is not for use with python May 13 14:41:11 ..not counting os.popen("picocom...") May 13 14:48:48 Letothe2nd : where schould i write my serial parameters in this Examble ? May 13 14:51:24 humpelstilzchen[ : can i use the picocom for test the data in Cmd in the BBB ? May 13 14:52:29 Maria23: seriously, if the example is beyond your own initiative to read and understand, i cannot help you. please the board to whomever gave it to you. May 13 14:52:36 *return May 13 14:52:40 Maria23: What other device are you talking to anyway? May 13 14:56:02 humpelstilzchen[ : it is a analog Valve May 13 15:04:50 lorforlinux[m] : thanks for your Tips , i think here is a live chat to help the beginners, not for the professional, if you are professional, you do not have to answer me ,there are more than 149 person here ,they will help me and the another beginners , i am asking a general question here .. May 13 15:10:26 Maria23: sorry, that is just not the correct mindset. the point is that a BBB is not a toy for somebody who needs to be handheld because not being able to read one page of documentation. it is a somewhat powerful, but also advanced development board running a full linux system. if one wants to use it, one has to either have a certain level to start out - or go for something simpler first, like maybe an May 13 15:10:32 arduino. it nothing personal, just ... May 13 15:10:34 ... the truth. May 13 15:11:02 (and i think i still know you by the name apricot, right?) May 13 15:12:17 anyways, time to call it a day. May 13 15:16:29 Letothe2nd : no this is the first one that i used this Chat , i would like to send my Message from BBB to my Valve ,because of that i'am here ... May 13 15:16:44 Maria23: good luck then. May 13 15:17:05 thanks (y) May 13 15:20:08 Maria23: USB to RS232 dongle works in most cases. May 13 15:20:50 Do you know the serial parameters you need, like Baud rate, data bits, parity bits, stop bits, and whether it's a DCE or DTE? May 13 15:21:11 yes i have it May 13 15:21:43 Plug the USB dongle in and watch dmesg for the TTY attached (such as /dev/ttyUSB0 ) and have your code use that for I/O.. May 13 15:36:04 if you're using an usb to serial dongle your question isn't BBB-specific anyway, it's just about linux May 13 15:37:41 Maria23 : you need a python code , you should write this Example ,you should use the example of what lorforlinux[m] sent you , May 13 15:41:31 Maria23: this channel is simply a community chat, not specifically a "live chat to help the beginners" May 13 15:42:11 don't expect people to hold your hand every step of the way May 13 16:01:01 zmatt : my question was how best to use USB as an interface to send a message from BBB zo Ventil .. my question has nothing to do with BBB? May 13 16:01:19 Maria23: it really doesn't no May 13 16:01:46 the answer to that question will apply to any linux system May 13 16:03:25 zmatt : are all the questions answered only special BBB questions? May 13 16:03:34 certainly not May 13 16:04:41 but if you're completely new to both python and linux, you really shouldn't expect people here to give you a step by step tutorial or something May 13 16:05:04 why do you make a war against the girl, what did she ask wrong? May 13 16:05:40 o,O May 13 16:05:44 she wants to learn, maybe someone else wants to help her May 13 16:05:52 I'm not, all I said was that the question isn't BBB-specific, you're making way more out of it than it is May 13 16:06:17 the fact that the question isn't BBB-specific is important to realize since it means that when searching for resources you shouldn't include "beaglebone" as a search term May 13 16:06:49 since that will unnecessarily limit the resources you will find May 13 16:08:17 maybe someone else wants to help her here !!! May 13 16:08:32 you said his channel is simply a community chat May 13 16:08:59 it *is* a community chat May 13 16:12:11 it's not specifically a support chat for beginners, though it's a decent place to get help often enough May 13 16:13:17 perfect , i needed this place to get help May 13 16:29:14 Maria23: You tagged the wrong person. May 13 16:30:47 I was wondering if I missed something May 13 18:27:43 Maria23: you do realize that we can see you sharing the same IP with Sara68? May 13 18:28:57 I had not even caught that, and I'm really tempted to hand out a ban for pulling shit like that May 13 18:32:35 Maria23: there are good ways to get help and good ways to get people to never want to help you with anything ever again. so far you're succeeding more at the second May 13 18:34:20 I would recommend to visit the next Hacker/Makerspace that is close to you when the Isolation is over. It is far easier to help face to face in those situations May 13 19:08:56 not quite worthy a submission to bash.org, but close May 13 19:19:53 trolling from two accounts sharing the same IP and on troll answering the other trolls question, that's some serious psychosis right there... **** ENDING LOGGING AT Thu May 14 02:59:57 2020