**** BEGIN LOGGING AT Sat Aug 04 02:59:58 2012 Aug 04 04:49:32 hey guys, I have deleted the RNDIS/ethernet gadget from System Preferences > Network in OS X Mountain Lion without knowing how to add it back, in attempt to troubleshoot why I couldn't get it to work. I have downloaded the latest Angstrom release and successfully extracted it to the uSD card hoping that might help but it didn't. Given that the USB to Ethernet is driverless I am having trouble finding out how to to fix it. I have been Aug 04 04:49:33 reading the info here, http://www.linux-usb.org/gadget/ but I can't see how its useful to me when I'm using OS X. Any advice on what to do next please? Aug 04 04:53:13 quick question what do I mount for omap? Aug 04 05:22:42 <_av500_> gm Aug 04 05:37:11 morning Aug 04 05:58:34 defecta: I'm not sure about Mountain Lion, but I know in previous versions of OSX (at least 10.5), rndis was not supported at all. Aug 04 05:58:54 defecta: and there was no way I found to make it work. Aug 04 05:59:28 defecta: one of the things I wanted to try was to build g_ether without rndis and see if OSX had support for that configuration. Aug 04 05:59:48 Probably try EEM and ECM both (I think those acronyms are right, it's late and I'm too lazy to look it up) Aug 04 06:00:26 anyway I've never gotten there. I had the problem with an Android phone, but you're looking at the same issue. I haven't tried g_ether with bone on mac. Aug 04 06:01:42 defecta: if you get it working (or not), I'd be interested to know. Aug 04 06:28:39 Thanks alan_o Aug 04 06:34:09 i find it strange that;'s not mentioned anywhere. And even more strange that I had an RNDIS ethernet gadget in my network interfaces if its not supported. Aug 04 10:50:10 I'm still a bit of an electronics noob but I'm learning. Is there a way to set up the voltage GPIO pin on a beaglebone enough to control a 12v relay, without need for an additional 12v supply? Aug 04 10:50:43 or am I going about this completely the wrong way? Aug 04 10:52:33 probably don't want to drive the relay with gpio if that's what you're planning, maybe look up opamps Aug 04 10:56:10 ok thanks. Aug 04 10:57:30 you will need an external supply of some sort Aug 04 11:03:14 well there is 3.3V and 5V on board that could be used for the opamp Aug 04 11:04:07 and depending on the relay it might not need 12V to switch the 12V on the secondary side. check the datasheet. Aug 04 11:05:10 depends on the power requirement of the relay those 3.3V I/O don't have much current behind them Aug 04 11:06:05 * dm8tbr would probably drive a FET with the GPIO Aug 04 11:08:07 random example for a suitable relay you could feed with the 5V that also the beagle needs: http://www.ebay.com/itm/10-x-DC-5V-Coil-1A-125V-AC-2A-30V-DC-8-Pins-DPDT-Power-Relay-HK19F-/320950199687?pt=LH_DefaultDomain_0&hash=item4aba1f6587 Aug 04 11:08:58 enough to drive a security lock? Aug 04 11:09:20 I'd expect something like this should be possible: GPIO -> FET -> Relay Aug 04 11:10:48 hmm that looks like what i need. Aug 04 11:12:00 i am trying to use my BB to trigger an 18v DC switch on my intercom that releases the security door in my apartment building. Aug 04 11:15:16 i though I knew enough to be able to do this but I am rapidly finding this quite a learning process. Designing the driver for the relay is proving quite a challenge Aug 04 11:15:41 (for me. given how little I know about electronics.) Aug 04 11:19:42 can anyone point me to some resources for learning about driving relays from a beaglebone? Aug 04 11:21:11 could be as easy as using sysfs if you don't need it to be extremely efficient to send the signal high/low Aug 04 11:21:47 you don't necessarily need a proper driver for your application I wouldn't think Aug 04 11:24:15 sysfs? my google search didn't really find anything useful.. Aug 04 11:26:08 quick and dirty ... https://sites.google.com/site/bifferboard/Home/gpio Aug 04 11:27:37 you may need to play a little with the demuxing settings either in uboot or the kernel Aug 04 11:28:33 ... still easier than developing a proper driver for non time critical operations Aug 04 11:29:51 and good for a proof of concept if and determining if it's even feasible before developing such a driver if you do have time critical operations Aug 04 11:32:34 you don't need the patch listed at the bottom btw Aug 04 11:37:04 thanks Ill check that out. I also found this that might be applicable to my application too. what do you think? http://www.youtube.com/watch?v=Pk33lLY384o Aug 04 11:43:55 might help with wiring but doesn't go into any code Aug 04 12:14:11 http://live.lmgtfy.com/ Aug 04 12:35:56 Crofton|work: heh Aug 04 13:23:23 within 30 seconds "tits" scrolled past Aug 04 17:05:52 does anyone know of a easy way to sync only a specific partition? Aug 04 17:09:27 google returns a lot of results for syncing between partitions, but I'm looking for something like the sync command that will ignore the rootfs Aug 04 17:24:26 one way would be to remount the partition as sync Aug 04 17:27:36 will that slow the system down by syncing on every write to that partition? Aug 04 17:27:57 (on beagleboard specifically) Aug 04 17:28:08 i mean, when you want to sync Aug 04 17:28:11 remount it as sync Aug 04 17:28:16 oh Aug 04 17:28:17 and remount it as async immediately after that Aug 04 17:29:19 hmm, interesting.. would in sync that partition immediately when remounted? Aug 04 17:30:35 s/in/it/ Aug 04 17:39:59 I think just running mount -o remount on the partition I want to sync may achieve my goal, thanks Aug 04 19:29:39 thurbad: iirc there's a sysfs entry to drop caches per partition/disk as well Aug 04 19:39:04 ok I'll look into that as well Aug 04 21:57:46 Argentina Aug 04 23:32:56 hi Aug 04 23:49:30 Hey guys. I have been researching MOSFETs etc for my project at the suggestion of some ppl in here and I found this. http://www.adafruit.com/products/355 it looks like its capable of switching the 18v that I need without the need for a relay. Am I correct? Aug 04 23:51:43 I still don't know enough to decode all the specs in the data sheet, so any help would be appreciated. =] Aug 04 23:51:47 defecta: what current are you sourcing through it? Aug 04 23:51:52 usually the quesiton is more about the current thatn the voltage Aug 04 23:51:53 fail. Aug 04 23:52:31 defecta: rather what is the wattage on the datasheet say? Aug 04 23:52:34 erf, it's rated 62A Aug 04 23:53:12 Hmm, good question. So I need to know the current of the 18v I'm trying switch yeah? Aug 04 23:53:26 * ogra_ wonders when the channel topic changed ... no more reference to beagle ? (the search tool) Aug 04 23:54:19 defecta: well you would if you were using a relay too Aug 04 23:54:53 Ok cool. Aug 04 23:55:41 * mranostay senses defecta is going to fry soemthing Aug 04 23:56:06 When isaid I don't know enough, I meant there are vast expanses of knowledge that I am missing that one would usually have before embarking on a project like this. =] Aug 04 23:56:06 well, if he doesnt he will at least a cooling setup thats bigger than a relay :) Aug 04 23:56:13 +need Aug 04 23:56:26 Haha, yeah maybe. =P Aug 04 23:57:31 Yeah so I should really use the MOSFET to drive the relay? Aug 04 23:59:06 FYI the MOSFET would only be switching 18v for no more than a second or do. Long enought to release my security gate. Aug 05 01:59:22 Hi... is anybody that use QT on the beagle? Aug 05 02:04:56 I compiled embedded linux QT libs Aug 05 02:05:23 I configured QT Creator with it Aug 05 02:05:58 but I can't use it **** ENDING LOGGING AT Sun Aug 05 02:59:59 2012