**** BEGIN LOGGING AT Tue Jan 21 02:59:59 2014 Jan 21 04:53:02 is there any reason echoing a 0 to ttysO should cause the tps65 on the beagleboard-xM revC2 to overheat and prevent the board from starting? Jan 21 04:53:48 when I attempt to submit an RMA ticket an error box prevents me from doing so Jan 21 05:00:43 has anyone submitted an rma ticket before? Jan 21 05:05:30 has anyone submitted an rma ticket? When I attempt to there is an error box with no information inside preventing me from submitting. Jan 21 07:33:18 I have a BeagleBoard-xM Rev C with LI-5M03CS camera module from Leopard Imaging with Aptina mt9p031 sensor. After netinstall Debian I have kernel 3.13.0-rc8-armv7-x8 Jan 21 07:33:49 But I can't find the module for mt9p031 in the kernel config. Has it been removed? Jan 21 07:39:02 (j #debian Jan 21 07:41:05 Andy1978: you'll have to check with LI if their stuff ever went upstream Jan 21 07:41:51 tbr: This page http://cateee.net/lkddb/web-lkddb/VIDEO_MT9P031.html says found in Linux kernels: 3.7–3.12, 3.13-rc+HEAD Jan 21 07:42:16 and in the last netinstall which used kernel 3.7.10-x13 the module was included Jan 21 07:42:52 then I'd check if the kernel was built with CONFIG_VIDEO_MT9P031 Jan 21 07:44:37 tbr: yeah, already did that but CONFIG_VIDEO_MT9P031 isn't even there (not y,m,n) Jan 21 07:45:03 no idea then Jan 21 07:45:28 I guess that's an RCN build, so check with him? Jan 21 07:46:08 yes, a RCN build, sorry that I forget to mention Jan 21 08:56:32 Hi, does anyone know, what the devices /dev/ttyS0 - /dev/ttyS3 are? Are they the UARTs on P8/P9? Jan 21 09:07:24 skunk_michi: probably not, afaik uarts are on ttyO0 ttyO1 .. on beagle bone series Jan 21 10:39:43 does someone here uses the build scripts from RobertCNelson and can explain whats the goal/task for the different repos? For example linux-dev, arm7_devel, armv7-multiplatform looks almost equal to me Jan 21 10:42:45 andy, hang around and you might catch him here Jan 21 10:42:58 Vaizki_: fine, thank you Jan 21 10:43:09 but my real answer is, no idea Jan 21 10:43:13 :-D Jan 21 12:31:08 Vaizki_:what is RobertCNelsons nick so I can detect him? Jan 21 12:34:46 rcn-ee Jan 21 13:12:03 when using the pwm , what to put in period, in case I want 4Khz? Jan 21 13:14:58 cityLights: f = 1/T Jan 21 13:15:14 cityLights: as can be read up in any math and physics book Jan 21 13:15:25 cityLights: i'm sure wikipedia has an entry too Jan 21 13:15:30 250 msec Jan 21 13:16:09 is it 250,000,000 ? Jan 21 13:16:20 how many zeros? Jan 21 13:16:31 * KotH points at wikipedia Jan 21 13:20:45 cityLights: I never used the pwm pins. How do want to control them? Writing to /sys/devices... period? Jan 21 13:21:09 cityLights: or do you use some driver? Jan 21 13:22:14 cityLights: There is a C++ class for the PWM sub-system where you can set the period in ns. Jan 21 13:24:54 Andy1978: Yes I want to write to /sys/device.../period Jan 21 13:25:18 KotH: is period given in ns? Jan 21 13:25:53 so 4/Khz -> 250 mSec = 250,000,000 ns Jan 21 13:25:56 right? Jan 21 13:26:08 cityLights: I just can guess you have to write the time in ns (nanoseconds)? I would have to google too Jan 21 13:26:12 cityLights: what does your research tell you? Jan 21 13:26:17 I can then emit 4Khz sound from a piezo electric buzzer Jan 21 13:26:57 cityLights: No 1/4KHz => 250µs -> 250,000 ns Jan 21 13:27:07 I see Jan 21 13:27:34 thanks, I will get back to tying to emit sound Jan 21 14:32:16 Are there any known issues with the mmc driver in v3.12? I have connected an SDIO wifi chip to the BBB->mmc3 and it is working fine with kernel 3.8, but not with 3.12.. Here is a kernel log: http://pastebin.com/kipF0ZpS Jan 21 14:32:29 As you can see writing to the device hangs.. Jan 21 14:39:29 with my beaglebone black and the stock angstrom installation, the screen always turns off after about 10min. i've changed the power settings to not do this and also added consoleblank=0 to uEnv.txt. when i issue "echo 0 > /sys/class/graphics/fb0/blank" after it turns off, it stays on forever. i tried adding this to the .profile, but it only works after the screen turned off for the first time. any ideas how i can solve this? Jan 21 14:42:39 KotH: I am seeking for a way to use the same button as input and also allow me to restart the board Jan 21 14:43:10 I thought of connecting the button to a monostable ciruit as 555. Jan 21 14:43:37 then is the user holds down the button for 30 sec it will restart the board Jan 21 14:43:55 this is in case the watchdog doesn't respond Jan 21 14:44:52 cityLights: so a button that has some circuitry to pull the reset pin? Jan 21 14:45:05 yes Jan 21 14:45:11 cityLights: or just "signal the OS to reboot" ? Jan 21 14:45:39 KotH: this will be used in case the OS is not responding Jan 21 14:46:10 yes, that can be done Jan 21 14:49:41 did anyone here tried this? Jan 21 14:49:52 or am I the first one to use this? Jan 21 14:51:49 anyone? Jan 21 15:00:57 cityLights: it can be done Jan 21 15:02:15 av500: I am thinking if I need some sort of de-coupling between the gpio and the monostable circuit Jan 21 15:02:30 so the mono stable won't bother the gpio Jan 21 15:02:55 bother? Jan 21 15:03:14 buffer your button Jan 21 15:03:18 put an RC on the other side Jan 21 15:03:23 for example the current from the monostable will cause nose in the gpio Jan 21 15:03:27 once it goes low, it pull reset or so Jan 21 15:03:48 * av500 waves hand Jan 21 15:03:49 av500: without a monostable? Jan 21 15:05:49 well, add a monoflop to get a defined reset pulse Jan 21 15:05:56 or a reset generator Jan 21 15:06:22 looking Jan 21 15:13:57 so I can use P9.10 to initiate a power reset on the BBB? Jan 21 15:14:06 seems usefull Jan 21 15:31:03 doesn'the power management chip have this functionality(e.g reset after long press) Jan 21 15:37:31 keesj: please assume OS is dead Jan 21 15:37:43 otherwise no need to restart Jan 21 15:42:35 the PMIC does not run an OS Jan 21 15:55:19 jkridner: Anything specific on the agenda for thursday's michigan meetup? I've got a coworker who's trying to get some ASIC bitcoin miners going on his BBB, and might bring it along. Jan 21 16:06:47 with my beaglebone black and the stock angstrom installation, the screen always turns off after about 10min. i've changed the power settings to not do this and also added consoleblank=0 to uEnv.txt. when i issue "echo 0 > /sys/class/graphics/fb0/blank" after it turns off, it stays on forever. i tried adding this to the .profile, but it only works after the screen turned off for the first time. any ideas how i can solve this? Jan 21 17:19:29 anyone here build cnc devices from the bbb? did you use steppers or bldc servos? Jan 21 17:28:09 reat, good search terms would be "linuxcnc beaglebone", see what projects you can find Jan 21 17:30:06 linuxcnc is a weird beast. Jan 21 17:30:12 it needs a realtime kernel. Jan 21 17:30:22 is there a realtime kernel for beaglebones? Jan 21 17:34:21 the existence of the beaglebone linuxcnc project and its successful use on many machines would seem to suggest so,.. Jan 21 17:35:03 heh. Jan 21 17:35:41 it would. Jan 21 18:04:22 it was more of a question of what does anyone this is better. steppers or bldc servos? i know there is a bunch of projects out there already Jan 21 18:05:00 "better" is an awkward question. Better for what purpose? What type of machine? What will the loading and drive look like? Jan 21 18:05:28 pcb mill Jan 21 18:05:42 Steppers are easy to control, but need to be oversized or you run the risk of missing steps. Servos can be much closer to actual requirements, but cost a lot more and are harder to control. Jan 21 18:05:48 Oh, steppers all the way there. Jan 21 18:06:55 steppers even for .001 or smaller tollerance? Jan 21 18:07:00 Sure. Jan 21 18:07:04 WHy not? Jan 21 18:07:22 Our LPKF Protomat uses steppers and does 1/3200" resolution. Jan 21 18:08:31 im just going off of what big cnc's use or any really high end cnc machine Jan 21 18:08:43 thats why im asking which is better Jan 21 18:08:49 Yup. And you also know how much those cost. Jan 21 18:08:59 yea i work on them Jan 21 18:09:27 RIght, so you also should understand then pretty intuitively that "better" is a bad question without constraints. Jan 21 18:10:19 well mainly i need it to be accurate and really never slip. because one slip and it would cost well over 500 to start again Jan 21 18:10:38 SO size the motors so it never slips. Jan 21 18:10:46 THis is not a hard problem. Jan 21 18:11:29 if one slip is worth 500 can’t you jsut buy a cnc machine? Jan 21 18:11:37 Also, that. Jan 21 18:11:58 THe LPKF machines are pretty reasonable if you need that kind of perfection. Jan 21 18:24:22 Also, if it matters so much, this is definitely *not* something to DIY--you want another company to take the legal liability for failures. Jan 21 18:41:16 can anyone tell me where i can get a reference of all functions for bonescript including their inherited members? Jan 21 18:41:52 CareBear\: the last board i had contained bricked hardware Jan 21 18:42:09 poagester: Yes, the bonescript source code. Jan 21 18:43:11 agmlego: it doesn't have all of them and im not completely familiar with js Jan 21 18:44:04 If the source itself does not have what you are looking for...then what you are looking for ndoes not exist. Jan 21 18:44:11 Or, you are looking at the wrong source. Jan 21 18:46:57 agmlego: i looked at github and looked in bone.js, bonescript.js, functions.js. anywhere else? also, are serial and i2c built in? I saw the math functions Jan 21 18:47:51 I have no idea; I try to stay as far away from bonescript, node.js, and JavaScript in general as I can at all times. Jan 21 18:49:03 agmlego: ah, i understand, im actually thinking about switching to c/++. python doesnt look like it can do what i need without blocking. Jan 21 18:50:10 agmlego: thanks, ill look through each source file and see if I can tell. Jan 21 18:50:44 Best of lucvk. Jan 21 18:56:02 agmlego: serial and i2c are included in the index.js file, just some useless knowledge ;) Jan 21 20:30:27 Hiya! Jan 21 20:31:11 test Jan 21 20:31:55 it's quiet...too quiet... Jan 21 20:32:14 hi, any idea why I can't set GPIO on high? I tried a few of them, and couldn't find any working pin Jan 21 20:33:11 anybody know where I can get a BBB? Jan 21 20:33:32 and/or when? Jan 21 20:33:35 doug looks like they are shipping about now Jan 21 20:33:39 to suppliers Jan 21 20:33:45 according to my japanese one Jan 21 20:33:46 ah, good... Jan 21 20:34:06 domo arigato Jan 21 20:34:20 * Doug_ will continue to hold his breath... Jan 21 20:36:20 hm, why can I access pins on P9, but not on P8? Jan 21 20:36:48 deanrock0: you need to make sure that you have the pinmux set properly as well as make sure the pullup/pulldown resistor configuration is set as well Jan 21 20:37:24 isn't b.pinMode and b.digitalWrite in node.js enough? Jan 21 20:47:09 newbie asks, Why do I need network-over-USB access to my BeagleBone? What does that give me? (I'd prefer not to install drivers on my macbook if I don't need to.) Jan 21 20:47:40 gives you network over usb .. nothing more Jan 21 20:47:51 you can as well use the native ethernet interface Jan 21 20:48:18 That's what I thought. So, if I'm using ethernet, then I don't need network-over-USB, right? Jan 21 20:50:27 no Jan 21 20:50:44 i mean Jan 21 20:50:49 correct, you don’t need the drivers Jan 21 20:50:53 thanks! Jan 21 20:51:24 they can be useful obviously, one thing extra they give is to a partition with boot parameters Jan 21 20:51:38 and they are really standard well know drivers Jan 21 20:51:42 they won’t gum up your system Jan 21 20:52:24 ok, thanks for the clarification Jan 21 22:32:13 jkridner: just watching your makerfaire demo. great job :) Jan 21 22:32:37 kblin: thanks! Jan 21 22:32:59 very nice of you to say. Jan 21 22:33:10 especially from you. Jan 21 22:40:12 jkridner: I always enjoy people being able to explain cool technology without too much mumbo-jumbo, but without dumbing down what they need to say Jan 21 22:40:50 the different demos I did were of varying levels of success, I'd say. Jan 21 22:42:55 well, that's the thing with demos, some of them you win, some of them you don't :) Jan 21 22:56:54 <_av500_> hi jkridner Jan 21 22:57:05 <_av500_> hi kblin Jan 21 22:57:11 oh av500 is still awake Jan 21 22:57:27 <_av500_> barely Jan 21 23:08:17 hi _av500_ Jan 21 23:09:20 hmm Jan 21 23:09:31 <_av500_> :) Jan 21 23:27:53 good night Jan 21 23:52:59 Can a BeagleBone supply 5V to a 5V servo? For some reason, this tutorial is powering the servo off an external 5 volt supply: http://learn.adafruit.com/controlling-a-servo-with-a-beaglebone-black/wiring Jan 21 23:57:39 It can but not much. THe 5V regulator onboard is limited. Jan 22 00:07:47 thx **** ENDING LOGGING AT Wed Jan 22 02:59:59 2014