**** BEGIN LOGGING AT Sun Dec 07 03:00:00 2014 Dec 07 03:06:47 why not? it's all 1's and 0's ultimately. Dec 07 03:08:04 (oh he left) Dec 07 11:16:10 Hi guys, an electronic question: Are there restrictions regarding the max. potential difference between AGND and GND on a BB Black? E.g. can it be negative? Dec 07 11:43:50 vtrbender: yes, there are restrictions. have a look at the TRM and datasheet of the SoC Dec 07 11:44:44 as a rule of thumb: the difference should be as small as possible, definitly below 0.3V Dec 07 11:53:35 KotH, okay, I was afraid that might be the case. I want to measure the total current my system (the BBB, motors and more) consumes using a shunt. Dec 07 11:54:28 well, you can still do that Dec 07 11:54:48 perhaps somebody has a link with examples/information? Dec 07 11:54:55 use either a magnetic method (hall current sensor) or a very small resistor Dec 07 11:55:14 maxim has a couple of chips specifically for this case Dec 07 11:55:23 yes, I was planning to use a resistor Dec 07 11:55:23 even high side current mesurements (which is less of a pain) Dec 07 11:55:40 for hall current sensors, use your google powers Dec 07 11:56:16 I understand hall sensors are not so suited for small currents (>1A) Dec 07 11:56:25 depends on the type Dec 07 11:56:34 okay Dec 07 11:56:36 there are <1A types Dec 07 11:56:45 also, the more windings you have, the lower the current can be Dec 07 11:58:52 A resistor would be fine for my needs. But I need to shift the output with an op-amp or similar to get AGND close to GND I guess. Dec 07 11:59:30 use high side meeasurement Dec 07 11:59:41 it's probably easier in your case Dec 07 12:03:17 ah I see, thanks for the terms! Yes, I was planning low-side monitoring but high-side seems to be not that difficult and has advantages. Dec 07 12:03:29 use a maxim chip Dec 07 12:03:41 that will give you a ground referenced voltage output Dec 07 12:04:38 that sounds good Dec 07 12:05:36 just found an interesting Maxim app-note about that topic Dec 07 12:14:25 KotH, thanks for your input! Dec 07 12:14:33 np Dec 07 12:14:53 this makes 100g of teuscher chocolate :) Dec 07 12:17:05 I could only provide Marabou :) Dec 07 12:17:45 hmm... Dec 07 12:17:49 how about trocadero? Dec 07 12:18:48 hehe possibly! Dec 07 13:11:04 hey guys, do you now a creative commons picture of bbb's pinout i can use for my webpage? Dec 07 13:41:30 kenrestivo, an FTDI cable or a USB to TTL? Dec 07 13:41:33 for the bbb rev c Dec 07 13:41:42 to use serial via freebsd Dec 07 13:44:17 I want to use this https://www.adafruit.com/products/954 Dec 07 13:48:14 ftdi or similiar with 3,3V Dec 07 13:48:40 ? Dec 07 13:48:43 I'm new to this man Dec 07 13:49:38 it's listed as a pi product but the description (and fbsd website) say it works for the bbb Dec 07 13:50:26 than it should work? Dec 07 18:33:31 Hi, Anyone has already used a SSD1289 screen on the BB ? :( Dec 07 18:33:46 I'm on it since 3 days without sucess :( Dec 07 18:34:21 *success Dec 07 18:52:50 I'm having trouble understanding device tree overlays. Specifically, most of the overlays have a first fragment "fragment@0" that targets the am3xx_pinmux node, and which tries to set the mode of the desired pins. That makes sense. What I don't understand is the second fragment. I'm looking at the BB-BONE-PRU-01 dts, and the second fragment has a target of 'pruss.' Is that the name of the PRU node in the device tree? Where in the do Dec 07 18:52:50 cs would I find that name if I wasn't looking at an example? Some other overlays and many examples use the target 'ocp'. What is that? I don't understand what that second fragment is for. Dec 07 19:15:36 raff_i_el, Same for me, Device tree overlay documentations is so poor Dec 07 19:16:21 raff_i_el: Tick: http://youtube.com/watch?v=m_NyYEBxfn8 Dec 07 19:16:51 it's still byzantine and bizarre, but at least it follows some kind of twisted logic. Dec 07 19:17:19 which that video explains fairly well. Dec 07 19:19:29 Anyway, they will useless with the 3.14 kernel Dec 07 19:22:03 And thx for the video Dec 07 19:25:54 kenrestivo: thanks for the video Dec 07 19:27:43 Tick: what's the 3.14 kernel going to break? Dec 07 19:28:36 raff_i_el, I'm not really knowledgeable but apparently they will disappear for kernel approach Dec 07 19:28:41 *a Dec 07 20:08:36 Tick: I just found the boneDeviceTree source at https://github.com/derekmolloy/boneDeviceTree which is helping a bit and explains the elusive "ocp" node: "a fake OCP bus entry to represent the whole bus hierarchy." Dec 07 22:28:27 I seem to be having trouble finding a good resource that exposes me (a newcomer) to my beaglebone black and how to use it.. things like connecting with serial for the first time, etc. A youtube resource would be fantastic if possible? Dec 07 22:39:10 py0, have you checked out Adafruit's website? Doesn't that cover all the basics? Dec 07 22:39:24 I found this http://beagleboard.org/getting-started Dec 07 22:39:25 :x Dec 07 22:39:39 https://learn.adafruit.com/category/beaglebone Dec 07 22:41:04 thanks Dec 07 22:41:49 np Dec 08 02:11:40 hey guys what does it mean when led 0, 1, 2 and pwr are lighting up but not led 3? I can't ssh to it or browse to it and im trying to put debian 7.5 on. Help!!! Dec 08 02:19:32 hello? **** ENDING LOGGING AT Mon Dec 08 02:59:59 2014