**** BEGIN LOGGING AT Sat Feb 27 02:59:58 2016 Feb 27 03:47:37 no patience... Feb 27 03:48:18 coulda looked at snappy, tizen, yada yada... Feb 27 04:38:03 nerdboy: the lazy ones are easy to filter .. "blah blah blah" hand it to me on a plate . if they stick around, they're the ones worth helping :) Feb 27 04:38:53 shows a level of commitment to their cause lol Feb 27 04:40:00 most kids just don't grok irc these days... Feb 27 04:41:04 no, that doesn't help . nor do the web front-ends Feb 27 04:41:54 that said, the web ends are a great help to those who do, and opening the gateway up .. Feb 27 05:19:14 Hey guys, I'm having a major lapse in my brain cause I've not done this in a while. I'm trying to remember the name of the electronic component that when voltage is applied it connects another circuit. Basically an electronically activated switch. I know this is so simple I can't remember the name of it tho. :( Feb 27 05:21:43 Basically I want the board to turn something on by plugging it in, but the board is 5v, and the thing it is turning on is 12v many amps, so I just need a circuit that basically plugs in this other thing. Feb 27 05:26:49 Good grief, how did I forget the word relay, just ignore me, going back to forget more words Feb 27 07:37:11 * zmatt yawns Feb 27 07:37:15 mornin Feb 27 11:54:14 zmatt: morning Feb 27 14:25:56 Hi @all: One question: I am a BBB beginner and just try to initially flash an debian image onto the emmC. Now, for the latest images to download, there is a howto for the process of making the image a "flasher image", i.e. changing the line in /boot/uEnv.txt file. Now, how do I do that on a windows system? (The SD card is not recognised, once i write the image to the Card with Win32DiskImager?) Feb 27 14:43:17 ok i found some pre-built version... Feb 27 16:22:19 My 4 Port USB Hub specifically designed for BBB is now finished the design stage. Sending away for PCB's on Monday: http://imgur.com/a/ojDjD Feb 27 16:54:16 Strontium: that looks cool .. like the pcb A socket :) Feb 27 16:54:30 or is it plug. Yanno :p Feb 27 16:55:02 thought maybe you were sharing that with the mini-B for 'upstream' Feb 27 21:33:48 Strontium: nice! :) **** BEGIN LOGGING AT Sat Feb 27 21:36:26 2016 Feb 27 22:21:13 lol... -!- newbie21 is now known as veremit Feb 27 22:21:44 eww holy netsplits Feb 27 22:24:54 zmatt: thanks for the highlight/heads-up lol Feb 27 22:24:58 oh ffs .. Feb 28 00:16:59 veremit: thanks, its designed to plug in to the USB A directly on the BBB Feb 28 00:17:17 zmatt: thanks also Feb 28 00:17:41 Now i need to finalise my BOM so I can get an idea what this will cost me to make. Feb 28 00:19:32 and be sure to get the pcb right :P Feb 28 00:19:39 (see also docs like http://www.ti.com.cn/cn/lit/an/sprabt8a/sprabt8a.pdf ) Feb 28 00:25:01 zmatt: i built a paper prototype and checked it for fit before running all the tracks. I was quite worried about making boards and then they not fitting on the BBB Feb 28 00:25:45 zmatt: http://imgur.com/a/xnqsl Feb 28 00:41:25 good thinking :) but that's not what I was referring to though Feb 28 00:42:03 USB2 has a bandwidth of nearly half a gigahertz... it's very easy to fuck up signal integrity issues Feb 28 00:46:34 general advice can also be found in http://www.ti.com/lit/an/spraar7e/spraar7e.pdf Feb 28 01:00:28 what's up with freenode today... :/ Feb 28 01:01:37 zmatt: I read and applied the USB2 guidelines to the design. Feb 28 01:01:46 okidoki :) Feb 28 01:02:19 But i also worked on my friends pc 2 days ago and his front panel USB2 cable is just a 2.57 pitch ribbon cable wrapped around sata cables and god knows what else before it gets to the front panel. Feb 28 01:02:28 It seems to work fine..... Feb 28 01:02:34 So it got me wondering. Feb 28 01:03:35 yes sometimes it puzzles me too... I've both seen cases where my thought was "how can you possibly get away with this.." yet it worked, other cases "oh come on how can it already be giving this much signal integrity issues at such low speeds !@#" yet it did Feb 28 01:03:44 Cost is a factor for me, I would prefer to read and stare at the screen for 2 days to get it right rather than rush off and get boards built. Feb 28 01:04:44 Oh well, time will tell. Keeping it small like that does introduce design constraints. Feb 28 01:07:15 power is another issue... the am335x is lacking a proper output power cap, which I suspect is the cause of some of the trouble people have with things that require bursty power such as Wifi or other RF transmitters... you can compensate that with proper caps on your board, but I don't know if there's a risk this could dip the vbus when you plug it in and cause the usb controller to flip out Feb 28 01:08:01 (that one is easy to test simply by connecting a 100 uF cap to the usb host port and see what happens) Feb 28 01:08:31 the am335x usb phy seems to be a bit... touchy... sometimes Feb 28 01:13:00 damn, I wish the pcb software we use was this cool... http://eda.eremex.com/cms/i/383095$[165x240].gif Feb 28 01:35:03 zmatt: kicad can push tracks something like that. Feb 28 01:36:12 zmatt: thanks for the heads up on the power issues. I wasnt aware of that. I will look into it. My board can power itself from the BBB or external 5V. Feb 28 01:36:55 Strontium: I'm not just talking about the push-and-shove though, look at the angles... Feb 28 01:37:05 or lack thereof Feb 28 01:37:40 zmatt: yes, i noticed the rounded traces, thats cool. Feb 28 01:38:14 TopoR just uses the shortest paths that satisfy the design constraints, pretty neat **** ENDING LOGGING AT Sun Feb 28 02:59:59 2016