2014-06-13 00:38 http://www.teslamotors.com/blog/all-our-patent-are-belong-you 2014-06-13 00:38 just seen that. not all hope is lost, it seems 2014-06-13 00:46 (small speaker) what if you leave both ends open ? 2014-06-13 01:20 oooh, DocScrutinizer05 finally confirmed transfer of funds to neo900 UG 2014-06-13 01:21 I started worrying already 2014-06-13 01:22 that was me actually, on his behalf ;) and well, Nikolaus is still far from being done with all transfers 2014-06-13 01:22 so you were lucky that yours was processed at the beginning ;) 2014-06-13 01:26 I see. still good 2014-06-13 01:26 (tesla) i couldn't have said it better myself :) 2014-06-13 01:26 dos1: maybe a refund status update on tmo couldn't hurt, to spread the word 2014-06-13 01:27 i.e., that about half of the things have been processed at all, that it takes a while for things to actually make it through the system, and then some more time before the transfer is manually processed and an ack is sent 2014-06-13 01:27 so that people don't get too nervous :) 2014-06-13 01:28 lamrz has joined #qi-hardware 2014-06-13 02:32 wpwrak: honing my skills... http://i.imgur.com/dpPEhA3.jpg 2014-06-13 02:34 or even http://i.imgur.com/cMCXdvS.jpg, with better contrast 2014-06-13 02:35 not much of a challenge with such huge components ;-) 2014-06-13 02:35 note how I've massively improved my etching 2014-06-13 02:35 clean, straight edges 2014-06-13 02:35 now I only need a laminator with better temperature control, because the bubbling of the mask is likely the result of that being off... 2014-06-13 02:36 oh yes, the edges are very clean 2014-06-13 02:37 do you know what a steiner tree is ? that's roughly how you'd want to organize your routes. you have some that are a bit circuitous 2014-06-13 02:38 hmmm 2014-06-13 02:38 no 2014-06-13 02:41 ugh, wikipedia is down 2014-06-13 02:41 wpwrak: can you explain from your meat memory 2014-06-13 02:41 down, really ? en.wikipedia.org/wiki/Steiner_tree_problem 2014-06-13 02:42 to join three points with lines, you pick a fourth point "in the middle", then draw from each point to that middle point. that minimizes the length of the lines. 2014-06-13 02:42 generalize for N points :) 2014-06-13 02:43 down, yes 2014-06-13 02:43 maybe I hit a different path in the load balancer 2014-06-13 02:43 of course, in a pcb you won't calculate those exact points but approximate the routing to what a steiner tree would look like 2014-06-13 02:43 I didn't really route it to minimize the trace length 2014-06-13 02:43 maybe putin found an article on homosexuality :) 2014-06-13 02:44 I routed it to satisfy my obsession, mainly 2014-06-13 02:44 hehe :) 2014-06-13 02:44 (putin) no way, I put openvpn on my router like months ago 2014-06-13 02:44 so everything goes through UK. 2014-06-13 02:44 and yes, that happened (not literally that but similar accidents) 2014-06-13 02:44 they would've not affected me, though, because my ISP plain out ignores federal law 2014-06-13 02:44 fun, eh? 2014-06-13 02:46 well, short traces are usually desirable: less can go wrong when etching, less unintentional emission, less undesired immission, less resistive loss, typically less in-circuit interference, etc. 2014-06-13 02:46 I don't accept any etching that isn't perfect 2014-06-13 02:46 otherwise, yeah, generally correct, but absolutely pointless for this circuit 2014-06-13 02:46 wait, immission? 2014-06-13 02:47 immission (plural immissions) 2014-06-13 02:47 The act of immitting 2014-06-13 02:47 you should set up another vpn that sends it to .au and then to .us, in case the're changing tapes in the uk when your packets fly by :) 2014-06-13 02:48 "n. 1. The act of immitting, or of sending or thrusting in; injection; - the correlative of emission." 2014-06-13 02:48 ah, you mean, it wouldn't catch rf 2014-06-13 02:48 or other noise 2014-06-13 02:49 there can also be very bad things at very low frequencies :) 2014-06-13 02:49 hmmmm, for example? 2014-06-13 02:49 people in the downstairs lab experimenting with large coils :) 2014-06-13 02:51 wouldn't it require a really huge trace? 2014-06-13 02:51 like, pcb antennas only really work for >=dozens of mhz 2014-06-13 02:51 we had that happen once at university. a sun kept on crashing. field services replaced every single bit of the machine, but even with just the case still in place, it still crashed. i suggested we ask them to send an exorcist instead of a technician. 2014-06-13 02:52 well, one fine day our sysadmin had lunch with the folks from the lab below us. they told him of their cool new experiment. that experiment happened to be precisely below that machine. 1 m to the side and you wouldn't have problems. 2014-06-13 02:53 oh, anything can mess with your stuff. it's not "all or nothing". e.g., that sun probably was just being pushed the tiniest bit over the edge. a few percent less and it would probably have worked perfectly. 2014-06-13 03:02 * whitequark sighs 2014-06-13 03:02 I disassembled this chinese UV led flashlight. a fine piece of #yoloengineering 2014-06-13 03:02 no current regulation whatsoever 2014-06-13 03:03 why would it need one ? 2014-06-13 03:04 UV LED fail. you buys new UV LED. everyone happy. 2014-06-13 04:17 lamrz has quit [Quit: Leaving] 2014-06-13 05:00 jekhor has joined #qi-hardware 2014-06-13 06:19 wej_ has joined #qi-hardware 2014-06-13 06:22 wej has quit [Ping timeout: 252 seconds] 2014-06-13 06:33 hmmm 2014-06-13 06:34 I don't get it. somehow this stuff doesn't work. 2014-06-13 06:34 I've connected a pair of LEDs to the outputs on the control board, and they light up just fine 2014-06-13 06:35 but when I connect my relay board, which I have tested independently and established that it works fine, too, extremely odd behavior happens 2014-06-13 06:35 when I enable (i.e. set high) output 1, relay 1 triggers. when I enable output 2, relays 1 and 2 trigger. 2014-06-13 06:35 wtf?! 2014-06-13 06:37 wolfspra1l has quit [Ping timeout: 240 seconds] 2014-06-13 06:39 wolfspraul has joined #qi-hardware 2014-06-13 06:48 dandon has joined #qi-hardware 2014-06-13 07:29 jekhor has quit [Ping timeout: 244 seconds] 2014-06-13 07:33 I'm starting to think it would be easier to use an optocoupler there 2014-06-13 07:33 ... which is the case for which it's clearly been designed 2014-06-13 07:33 sigh. 2014-06-13 07:51 pcercuei has joined #qi-hardware 2014-06-13 07:51 pcercuei has quit [Client Quit] 2014-06-13 07:52 pcercuei_ has joined #qi-hardware 2014-06-13 08:13 BerryHalsak has joined #qi-hardware 2014-06-13 08:14 BerryHalsak has quit [Remote host closed the connection] 2014-06-13 08:19 BerryHalsak has joined #qi-hardware 2014-06-13 08:28 sb0 has joined #qi-hardware 2014-06-13 08:52 xiangfu has joined #qi-hardware 2014-06-13 09:10 xiangfu has quit [Ping timeout: 255 seconds] 2014-06-13 09:17 xiangfu has joined #qi-hardware 2014-06-13 09:17 pcercuei has joined #qi-hardware 2014-06-13 09:18 DocScrutinizer05: is this a closed speaker? http://www.aliexpress.com/item/20pcs-lot-Acoustic-Speaker-2030-3020-Oval-Tablet-Phone-MP3-Speaker-1W-8-Ohms-L30MMxW20MM/1680409694.html 2014-06-13 09:18 http://www.aliexpress.com/item/Speaker-1W-8OHM-phone-MP3-MP4-MP5speaker-navigator-GPS-speaker-Oval-Speaker-28-9-4MM-1W/1675716454.html 2014-06-13 09:19 pcercuei_ has quit [Ping timeout: 244 seconds] 2014-06-13 10:15 lamrz has joined #qi-hardware 2014-06-13 10:23 lamrz has quit [Ping timeout: 244 seconds] 2014-06-13 10:48 lamrz has joined #qi-hardware 2014-06-13 11:07 xiangfu has quit [Remote host closed the connection] 2014-06-13 11:22 jekhor has joined #qi-hardware 2014-06-13 11:39 zrafa has quit [Ping timeout: 240 seconds] 2014-06-13 11:54 lamrz has quit [Quit: Leaving] 2014-06-13 12:10 BerryHalsak has quit [Ping timeout: 272 seconds] 2014-06-13 13:08 wolfspraul has quit [Ping timeout: 240 seconds] 2014-06-13 13:11 wolfspraul has joined #qi-hardware 2014-06-13 13:46 lamrz has joined #qi-hardware 2014-06-13 14:03 wpwrak: new, tiny and sexy http://www.acmesystems.it/arietta 2014-06-13 14:11 wpwrak: what experiment was this? magnetic neuro stimulation? 2014-06-13 14:12 https://en.wikipedia.org/wiki/Transcranial_magnetic_stimulation 2014-06-13 14:18 lamrz has quit [Quit: Leaving] 2014-06-13 14:30 * DocScrutinizer05 shouldn't read stuff like https://en.wikipedia.org/wiki/Post-hoc_analysis before first coffee 2014-06-13 14:32 astr: I can't answer your question since there are no datasheets. However it *looks* like both speakers have a chamber with aperture, which generally needs further considerations what "to do" with the air/sound coming out of such aperture 2014-06-13 14:34 seems like that oval 20*30mm 5mm thick speakers are widely used, maybe in a popular tablet or laptop or whatever. You should try to find either the datasheet of the speaker or the device it's used in and then copy what those devices' designers did. They are supposed to (but not guaranteed to) have had consultations with the speaker manufacturer or at least got detailed datasheets for the speaker 2014-06-13 14:38 odds are that those speakers are actually meant to get mounted to baffle, which in practice means you glue the speaker to wall of case behind an aperture that the sound escapes from case, and backside of speaker (with "chamber") is "open" to the inside of device and has no further acoustic elements attached 2014-06-13 14:41 when you can get a sample of such speaker, there are test procedures to acquire its Q, F(0) etc parameters, and then calculate the performance in various mounting variants by using tools like the mathcad sheets from quarter-wave site 2014-06-13 14:43 generally building a good speaker is really difficult and not only depends on buying a transducer of matching size and "good quality" 2014-06-13 14:54 pcercuei has quit [Ping timeout: 240 seconds] 2014-06-13 14:57 pcercueiS2 has joined #qi-hardware 2014-06-13 15:01 jekhor has quit [Ping timeout: 272 seconds] 2014-06-13 15:48 pcercuei has joined #qi-hardware 2014-06-13 15:52 pcercueiS2 has quit [Quit: Yaaic - Yet another Android IRC client - http://www.yaaic.org] 2014-06-13 15:54 pcercuei has quit [Ping timeout: 240 seconds] 2014-06-13 16:07 DocScrutinizer05: I wonder if I can just buy an existing thing and hack out the speaker + chamber (+ amp?). I can't face spending days working out how to make one. 2014-06-13 16:12 zrafa has joined #qi-hardware 2014-06-13 16:15 that's exactly what I'd suggest. Amp is dead simple. The speaker is a standard 8..32Ohm and any semi-matching amp can drive it 2014-06-13 16:17 ask if you want to know about my notion regarding possible small tweaks to chamber geometry, you _can_ do some bending and folding to it without changing acoustic properties much 2014-06-13 16:41 rz2k has joined #qi-hardware 2014-06-13 17:32 wolfspraul has quit [Ping timeout: 240 seconds] 2014-06-13 17:35 wolfspraul has joined #qi-hardware 2014-06-13 18:02 DocScrutinizer05: I'd like to know 2014-06-13 18:04 I meant you can ask me about particular changes you plan to apply to a copied design, and if I hink they can work 2014-06-13 18:04 re the amp, the troble is it will be batt charge or other bits I don't need that will make it bigger when I can buy a tiny module like http://www.aliexpress.com/item/Free-Shipping-5pcs-lot-DC-5V-2-Channels-3W-Digital-Power-D-Audio-Amplifier-Board-Amplifier/1758901278.html 2014-06-13 18:04 ok 2014-06-13 18:05 what about victimising something like this http://www.aliexpress.com/item/Portable-Mini-Ball-Speaker-mini-mobile-speaker-Tiny-portable-mobile-phone-speaker-sponge-ball-speaker/1482323150.html 2014-06-13 18:05 sb0 has quit [Ping timeout: 255 seconds] 2014-06-13 18:05 sorry, I can't give advice regarding amp design to use 2014-06-13 18:06 amp design depends on your particular needs 2014-06-13 18:06 re the amp, I guess I just find one that matches the watts of the speaker. but it seams a bit wastfull 2014-06-13 18:06 and of course you as well can check how that sponge ball is done 2014-06-13 18:08 my sister has something like this, it's quite loud :). http://www.aliexpress.com/item/Portable-notebook-computer-audio-player-Cute-black-laptop-audio-table-pc-Bomb-Speaker-mobile-phone-cellphone/1768145090.html 2014-06-13 18:09 though it distorts at max vol. sounds like a issue with the casing 2014-06-13 18:09 some sort of vibration 2014-06-13 18:16 perhaps hacking this is that answer http://www.aliexpress.com/item/Portable-notebook-computer-audio-player-Cute-black-laptop-audio-table-pc-Bomb-Speaker-mobile-phone-cellphone/1768145090.html 2014-06-13 18:18 hmm feedback complains of tablet being louder than it 2014-06-13 18:18 sb0 has joined #qi-hardware 2014-06-13 18:19 sorry, no idea 2014-06-13 18:31 didn't expect you to have one :) 2014-06-13 19:29 nicksydney: seen these yet ? https://www.gumstix.com (and they're ancient :) 2014-06-13 20:24 jekhor has joined #qi-hardware 2014-06-13 21:03 sb0 has quit [Quit: Leaving] 2014-06-13 21:41 rz2k has quit [] 2014-06-13 22:10 wolfspra1l has joined #qi-hardware 2014-06-13 22:13 wolfspraul has quit [Ping timeout: 240 seconds] 2014-06-13 23:03 jekhor has quit [Ping timeout: 244 seconds] 2014-06-13 23:24 wolfspraul has joined #qi-hardware 2014-06-13 23:27 wolfspra1l has quit [Ping timeout: 272 seconds]