**** BEGIN LOGGING AT Sun Apr 12 02:59:58 2015 Apr 12 04:57:08 n Apr 12 07:49:13 hi, which dns server to use on beaglebone? bind? dnsmasq? Apr 12 08:50:03 Hello....I have few queries around beaglebone black....I have been using raspberry pi for my protoype....now I want to use beaglebone for my actual product implementation.... Apr 12 08:50:47 while using raspberry pi, i used Bluetooth dongle and wifi dongle together and also used usb port for arduino communication as rapberry has 3 USB host.... Apr 12 08:50:59 But beagle bone has just one USB host... Apr 12 08:51:27 BBB has two: one usb one microusb Apr 12 08:51:41 how do i use all three together , bluetooth dongle, wifi dongle and USB for arduino Apr 12 08:52:14 you can communicate with the arduino using I2c - right? Apr 12 08:52:24 then yu have two usb left Apr 12 08:52:35 fine....i can use i2c for arduino Apr 12 08:52:41 thanks for your advice.... Apr 12 08:53:02 another is is there any java open source library for I2C in beaglebone Apr 12 08:53:17 I could find Bulldog library...is there any other library Apr 12 08:53:25 no idea, I use python.... Apr 12 08:53:25 also available Apr 12 08:53:59 fine thanks for your advice....I will try to use I2C for arduino and micoUSB and USB for Bluetooth and wifi Apr 12 08:54:46 Guest42598: writing your own i2c code is easy Apr 12 08:55:01 Guest42598: there is a sysfs interface to i2c, thus all operations are just reads and writes Apr 12 08:55:22 I am fluent in java and never used python Apr 12 08:55:47 so wondering if there is anything i can do with java Apr 12 08:56:48 sure Apr 12 08:57:07 it's the same in any langauge, just open file, read, write, read, write, read, write, read, write,... Apr 12 08:57:18 thanks very much...really appreciate quick help on this forum....bye Apr 12 08:57:34 this is an irc channel, not a web forum ;) Apr 12 08:57:58 sure thanks :) Apr 12 09:56:16 hello Apr 12 09:56:44 couple of questions about the beagle board black. What is the ethernet performance like? Apr 12 09:57:00 and whats the max size of sd card it supports? Apr 12 10:01:54 there is no inherent limitation to the size of the card (except for physical aspects, for which there are adapters) Apr 12 10:02:02 ok Apr 12 10:02:29 so it'll take a 64gig micro sd card with no issue? Apr 12 10:24:33 hello Apr 12 10:25:46 i can't get high voltage from pwm pin 8_19 Apr 12 11:45:38 hello Apr 12 13:37:02 Hmmm Apr 12 14:34:21 afternoon all. Newbie question if anyone has time. Apr 12 14:35:17 Just reverse powered by two day beagle bone black - is there anything I can do to recover it, or is for throwing out? Apr 12 14:41:40 Anyone got a moment? Apr 12 14:47:03 <_av500_> and what does it do now? Apr 12 14:48:34 in theory the tps65217 has reverse polarity protection with that FET it shows in its block diagram, but it's not listed as a feature anywhere in the datasheet so I suspect it would likely be damaged Apr 12 14:52:16 if it doesn't boot now that's the most likely suspect. You could try replacing it, if you don't mind soldering a 48-VQFN Apr 12 16:23:59 thanks for the comments. Apr 12 16:24:19 I can only do basic through soldering, so replacing components is beyond my skill level Apr 12 16:24:54 at the moment it does not make any response to usb or (with correct polarity) dc Apr 12 16:27:12 I comisserate with your loss. You might be able to get it repaired but at the $55 level it's a draw on cost. Replacing a VQFN48 part is NO SMALL feat either sadly. You would need some proper tools and not just a soldering iron. Apr 12 16:29:03 I'm slightly cross with maplin, who sold me a 5v dc power supply that I found misleading, but it is basically my fault (I have a multimeter and should have checked first) Apr 12 16:30:15 Have since busted up left hand attempting to dig up tree and vent fustration, so not going particularly well. Apr 12 16:32:48 well when it rains it pours I guess. As I said I understand how you feel, TI pulled a stupid on one of their dev boards that was almost as bad. I blew up the debugger because the idiots set the voltage on an LDO to 3.6V instead of 3.3V and if you did things just wrong you blew up the USB serial device. It appears that they discontinued the board because of that instead of fixing the problem. :D Apr 12 16:33:44 The difference is this dev board was $120 not $55 Apr 12 16:35:04 I'm used to either $20 avr boards (where you just don't care). This board was a suprise gift... Ho hum. Apr 12 16:35:22 120 clearly smarts Apr 12 16:36:22 So it sounds like recusing the board is beyond me, are there likely to be others that could use it for parts? Apr 12 16:40:00 Well it is frustrating. Apr 12 16:41:36 but then a somone who can handle gentoo you are clearly someone who can overcome fustration :) Apr 12 16:48:01 Is it worth buying one of the power capes with next board, as they all seem to offer some protection for this kinda of mistake Apr 12 16:54:04 the header is possible to get cross wired BUT less so than the barrel plug. If you know about the people who make those the standard is not too have one. In fact I would say they WANT to be sure the polarity gets mucked up, Those are heavily used in consumer products. Back to the headers, yes that might be a way to prevent it. You may need to just be sure that the power cape is for the right version of board. I was planning Apr 12 16:54:04 on powering my BBB boards that way as well. I am not a big fan of wall warts for your particular frustration. Apr 12 16:57:09 It sounds like beagle bone repair service would cover me.... Apr 12 16:58:10 It says "Repairs and replacements only provided on unmodified boards purchased via an authorized distributor within the first 90 days.", but doesn't mention whether the repair would be supported if i was caused by user mistake Apr 12 16:58:33 back in half an hour Apr 12 17:55:41 I've email the rma link, so see what they come back with. Apr 12 18:08:41 Sounds like a plan best of fortune on that. Apr 12 18:36:29 Thanks GenTooMan Apr 12 19:54:48 My beaglebone black is a bit out of date. I'm getting a key error for debian.beagleboard.org. The elinux page seems to indicate I should just disable that repository. Is that correct? Apr 12 20:03:09 hello Apr 12 20:03:46 is there any tech to make every Gpio a PWM like in Raspberry Pi? thank you Apr 12 20:05:49 jamesaxl: http://elinux.org/BeagleBoardPWM Apr 12 20:09:06 tamarin_: it will work with BeagleBone Black Apr 12 20:11:28 tamarin:^ Apr 12 20:17:11 jamesaxl: Yea. Here's another guide with a nice table of pins - http://beagleboard.org/support/BoneScript/analogWrite/ Apr 12 20:19:14 tamarin: thank you very much Apr 12 20:21:56 How many PWM outputs do you need? Apr 12 20:24:10 GenTooMan: i really need 12 Apr 12 20:24:59 jamesaxl: 4 feet, and every foot has 3 servo motors Apr 12 20:25:53 GenTooMan: ^ Apr 12 20:27:04 GenTooMan: http://i01.i.aliimg.com/wsphoto/v0/1270495759/Quadruped-4-legged-robot-multi-legged-robot-full-servo-font-b-bracket-b-font-accessories-font.jpg Apr 12 20:27:27 Well here is the deal. Your typical RC servo has a frame rate of 50 per second. and a PWM range of .5 to 2.5ms doing a bit of math that says 50*8 or another way of thinking about it is their are 8 time slots dedicated to control 8 servos on one PWM signal. Mux those signals and you will still be able to use 1 PWM output for all servos. Apr 12 20:28:28 To do that however requires some clever programming or DMA (whichever you want to use) to update the PWM for each time slot. You also need to send the right signal to the right servo. Apr 12 20:28:48 So if you have 4PWM outputs technically you can control 32 servos Apr 12 20:29:16 GenTooMan: aha that's nice and make me happy, i have not known this tech :D Apr 12 20:29:43 It's nothing new RC receivers use that to control up to 8 channels since the 80's Apr 12 20:29:58 GenTooMan: newfor me :) Apr 12 20:30:24 Ok you should look up how RC servo's are controlled and work from that information then. Apr 12 20:32:06 You need a demultiplexor to switch which servo is being controlled in which time fram (Time Domain multiplexing). You will need to set up 8 memory slots 1 for each PWM state and set up the DMA to trigger from each time slot and reset the whole thing when done. Apr 12 20:32:26 jamesaxl: You can also check out parts like this - https://learn.adafruit.com/16-channel-pwm-servo-driver Apr 12 20:32:45 which does all the work for you :D Apr 12 20:33:13 I would suggest you learn why it works first then buy it. No point using something you don't understand. Apr 12 20:34:05 GenTooMan: of course i should Apr 12 20:35:22 Greetings, I'm using Raspberry Pi at the moment but it has no analogue input. Does Beagle have analogue and digital inputs? Apr 12 20:40:07 g105b: http://beagleboard.org/support/BoneScript/analogWrite/ Apr 12 20:41:11 jamesaxl: this would be a start http://www.nxp.com/products/interface_and_connectivity/i2c/i2c_led_display_control/series/PCA9685.html Apr 12 20:41:37 GenTooMan: thanks a lot for your help Apr 12 20:41:47 g105b: http://beagleboard.org/support/BoneScript/potentiometer/ Apr 12 20:43:44 GenTooMan: i am going to made what tamatin posted by hand :) Apr 12 20:43:47 jamesaxl: further study http://en.wikipedia.org/wiki/Servo_control Apr 12 20:44:28 make* Apr 12 20:50:49 jamesaxl: that looks good, I better ask an expert like yourself before I get too excited: my project reads up to 6 0-5v analogue inputs and logs their values, is the beagle board capable of this? Apr 12 20:52:14 g105b: i am not really a expert Apr 12 20:54:27 jamesaxl: you are compared to me :) Apr 12 20:54:28 You will need to scale the inputs and also protect them. You should over the web page carefully. You do not want to over voltage any of the inputs. :D Apr 12 20:54:57 All the information is on the web site may take some work to find however. Apr 12 20:55:24 g105b: beaglebone adc is 1.8V max, so as GenTooMan said you'll need to divide it Apr 12 21:12:01 I suggest you buffer the inputs so as you don't get bit by the input imedance of the A2D converter. Apr 12 21:18:39 Recomendation to gl05b http://www.ti.com/lit/pdf/sbaa147 and http://www.ti.com/lit/pdf/slaa416 Apr 12 21:19:07 You need to know a lot of things BEFORE you commit horrors to your hardware :D Apr 12 21:24:04 GenTooMan: do you prefer writing codes with Nodejs or C ? Apr 12 21:30:43 I write all my software in C using a 'interpreter' is OK if you are just playing around, however you will run into hurdles in performance if you stick with JS Apr 12 21:42:21 jamesaxl: an alternative to using weird software constructs to generate 12 PWM outputs is to use a couple of DAC, use that together with a sawtooth signal and a comparator to generate the PWM signal Apr 12 21:43:30 jamesaxl: eg AD8804 which has 12 outputs Apr 12 21:44:08 jamesaxl: or alternatively, get an FPGA cape and use that to generate the PWM Apr 12 21:44:36 KotH: thank you very much, i have now a lot things i should to try Apr 12 21:45:06 KotH: i would like to know how it works and after i can get cape, to make it easy Apr 12 23:35:33 hi everyone, i need help with this error http://pastebin.com/dn9CEG19 Apr 12 23:48:47 It just means your kernel messages go to that tty and you probably should get the console cable (and so should I :D) Apr 12 23:54:34 I suggest you check what console you haev available .. since ttyO0 doesn't exist (can't imagine it would .. for some reason ttyO2 rings a bell .. ttySx are the standard serial ports for 16550 UARTs) Apr 12 23:55:05 most embedded boards don't have 16550 UARTs though . so you get ttyZZZ instead Apr 12 23:55:20 where ZZZ relates to the chip Apr 13 00:01:29 and this error: EXT4-fs (mmcblk0p2): couldn't mount as ext2 due to feature incompatibilities Apr 13 00:01:33 ? Apr 13 00:06:15 That sounds like the kernel isn't made for ext4? Apr 13 00:12:56 sounds like ya kernel is *** lol Apr 13 00:21:57 Something anyhow :D Apr 13 00:23:56 typically you mgiht get one or two warnings .. but generally its nothing to worry about unless 1) it crashes/ doesn't boot or 2) something doesn't work that should ... Apr 13 00:25:07 speakin of which .. need to run a new kernel build for my wand(s) Apr 13 00:25:23 try figure out what was going wrong with the wifi Apr 13 00:26:17 Hmm well I had thought of the beagle router but broadcom has all that NDA stuff you have to sign to look at an IC crosswise SIGH Apr 13 00:27:08 GenTooMan .. you should check out the banana-pi router .. looks cool .. based on the Allwinner A20 Apr 13 00:27:40 it even has *cough* sata lol Apr 13 00:30:19 I'm having trouble using RCN's setup_sdcard.sh script to make a flasher sd card. Apr 13 00:30:50 The command I am running: `./setup_sdcard.sh --mmc /dev/mmcblk1 --dtb beaglebone --bbb-flasher` Apr 13 00:31:14 And I get this error message: Apr 13 00:31:25 ----------------------------- Apr 13 00:31:25 ERROR: This script does not currently recognize the selected: [--dtb beaglebone] option.. Apr 13 00:31:25 Please rerun setup_sdcard.sh with a valid [--dtb ] option from the list below: Apr 13 00:31:27 ----------------------------- Apr 13 00:31:29 cat: /root/hwpack/*.conf: No such file or directory Apr 13 00:31:59 I'm using this version of the setup_sdcard.sh script: https://raw.githubusercontent.com/RobertCNelson/omap-image-builder/master/tools/setup_sdcard.sh Apr 13 00:34:37 thisisbrians .. you'd be wise to wait til RCN himself comes in tomorrow Apr 13 00:34:48 he can probably pin=point it quickest Apr 13 00:35:49 veremit: agreed. unfortunately I'm in a bit of a bind time-wise, so I figured I'd post it up here anyhow, just in case someone else could help. Apr 13 00:36:16 worth a shot Apr 13 01:03:21 thisisbrians: does the hwpack directory not exist? Apr 13 01:04:57 endrift: nope, it wasn't there. i'm now sure i wasn't using the script in the correct context...still working through it. Apr 13 01:05:23 that might have been your problem heh Apr 13 01:05:39 i had gotten the script outside of one of a build, so didn't have all the correct files/directories in place. Apr 13 01:09:28 that would do it .. rn's scripts rely on a certain setup :p Apr 13 01:14:59 yes! and now i'm making progress...anyone know how to use a custom build of u-boot with the setup_sdcard.sh script? Apr 13 01:17:49 thisisbrians .. have you checked out RN's main site at eewiki.net ? Apr 13 01:18:03 he's got uboot build instructions there Apr 13 01:18:17 should be able to piece it together **** ENDING LOGGING AT Mon Apr 13 03:00:00 2015