#avr | Logs for 2015-06-15

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[00:32:10] <rue_house> the calculator is just a side effect of a library I made to do things within my other programs
[00:39:22] <Casper> hey rue_house
[00:39:30] <Casper> do you have experience with cellulose insulation?
[00:41:55] <rue_house> not sure
[00:42:29] <rue_house> wait, is that that environmentally safe stuff thats stiff and itchy as all hell?
[00:42:46] <Casper> this house have basically zero insulation in the attic
[00:43:29] <Casper> unless you can call the insulation that used to be probably 4" thick that is now 1/2" thick and look more like dust in fiber than anything else an insulation...
[00:43:46] <Casper> no, it's the environementally safer treated paper
[00:44:15] <Casper> blew in place
[00:45:35] <Casper> thing is... all I find on the net is: beat fiberglass on every single point except weight and price
[00:45:53] <Casper> ... it's half the price of fiberglass... if my math are right
[00:48:06] <Casper> the second negative point is: make lots of dust at install time (since it's blew in place) and if there is some cracks around light fixture then it may let some of it pass...
[00:48:16] <Casper> but... zero other cons...
[00:50:25] <Valen> Casper: slight fire con
[00:50:33] <Valen> but then if its burning you have bigger problems ;->
[00:50:57] <Valen> oh, if you want to do any work where its been blown omfgwtfbbq it'll be messy ;->
[00:53:26] <Casper> good point
[00:53:40] <Casper> need to install a new light... might want to do it before I guess...
[02:06:13] <DO9XE> just to make sure im right: PORTD = (input_data[0] << 4); meas, that i take the 4 lower bits from the array (0x03) and move them 4 bits up, so i write 0x30 to portd, right?
[02:25:01] <Xark> DO9XE: Correct (and the low four bits will be zero'd, as you show).
[02:25:39] <DO9XE> thats no problem :)
[03:07:36] <DO9XE> is someone here, whos familiar with lufa? I got a really strange thing here
[03:20:11] <rue_bed> I'm here, not familiar with lufa
[03:20:55] <rue_bed> we have a lufa expert... where did our lufa expert go...
[03:21:19] <DO9XE> abcminiuser?
[03:21:28] <rue_bed> yea...
[03:21:36] <DO9XE> he wrote it, i know :D
[03:21:46] <rue_bed> so, where he go...
[03:21:53] <vsync_> he left atmel
[03:22:00] <DO9XE> propably to work or bed ;)
[03:22:05] <rue_bed> where did he GO tho
[03:22:19] <rue_bed> I'm sure he used to be logged in all the time
[03:22:33] <vsync_> to a startup making rbg led bulbs that can be controlled wirelessly...
[03:22:34] <vsync_> rofl.
[03:22:50] <rue_bed> rbg?
[03:22:50] <vsync_> fucking software people. and silicon valley shit. this world is headed for disaster
[03:22:52] <rue_bed> silly
[03:22:57] <vsync_> rbg*
[03:23:02] <vsync_> RBG
[03:23:03] <rue_bed> ah, much better
[03:23:04] <vsync_> FFS!
[03:23:08] <vsync_> rgb
[03:23:11] <rue_bed> ?
[03:23:21] <vsync_> rgb led bulbs...
[03:23:38] <vsync_> that can be controlled wirelessly (wifi, phones fucking yay)
[03:23:48] <rue_bed> ya
[03:23:59] <vsync_> if it can't tweet or be controlled with your newest android or iphone, it's not cool
[03:24:59] <vsync_> http://www.lifx.com/ i do believe this is the company
[03:25:03] <DO9XE> if it works with apple products it is propably broken :D
[03:25:16] <vsync_> whenever i see companies like this, i die a little inside
[03:25:31] <vsync_> just a little. same goes for when i see software people regarded as "engineers"
[03:26:04] <vsync_> actually in the software ppl case, i actually die a lot
[03:26:41] <vsync_> gangrene...
[03:27:47] <DO9XE> did anyone have troble with avrdude and the olimex avr isp mk2? mine returns an error for an unknown state a lot :P then, out of the blue it works.
[03:30:47] <vsync_> solar system was not aligned with the center of the milky way
[03:59:08] <osteri> software people are definetly engineers, get out of your bubble
[04:00:27] <DO9XE> i do both an meeeh :D
[04:01:26] <twnqx> DO9XE: i have a lot of trouble with avrdude 6.x, sticking to the last 5.x seems the better choice
[04:02:38] <DO9XE> i use a selfcompiled version of 6.1 because i use a patch to make the avr isp mk2 work
[04:02:58] <twnqx> make me one to make olimex jtag mk1 work :P
[04:04:44] <DO9XE> i found th epatch on the avrdude page. it was never applyed :(
[05:34:31] * LeoNerd wakes up from a night of heavy electronicsing, and discovers a few odd emails from eBay
[05:34:35] <LeoNerd> Wow, what *did* I buy last night?
[05:34:45] <LeoNerd> Dual PCB-mount BNC socket?
[05:35:58] <aczid> crazy night :)
[05:36:15] <LeoNerd> Yeah
[05:36:29] <aczid> I'm expecting about 110 cheap quadcopter drones to be delivered tomorrow...
[05:36:29] <LeoNerd> Worst thing is I didn't order *most* of the bits I want because stupid Farnell has this stupid £20 minimum
[05:36:35] <LeoNerd> I only want about £3 of SOT chips
[05:36:47] <LeoNerd> So now I gotta fill it with £17 worth of spare parts and general supply restocking
[05:37:02] <aczid> I get all my junk from aliexpress and am very patient...
[05:37:19] <aczid> although they don't have all that much
[08:48:21] <rue_bed> aczid, doing some swarm programming?
[08:50:04] <aczid> rue_bed: I hope to play with that a bit yeah :D
[08:50:28] <aczid> cheapo drones, cheapo avr's, ??? profit
[09:35:23] <Chillum> aczid: you can put RGB leds on them and have them make a matrix in the sky over crowds
[09:35:36] <Chillum> make inflammatory political messages!
[09:36:16] <LeoNerd> You'd need quite a few LEDs to get any sort of message actually readable
[09:36:27] <LeoNerd> I'd hate to think of the battery you'd need to carry :)
[09:37:40] <Chillum> perhaps glow sticks would be more efficient, always on but at least you can move them around
[09:37:51] <Chillum> or fireworks!
[09:41:31] <aczid> well these teensy little battery packs can only provide about 6-8 minutes of flight apparently
[09:41:52] <aczid> if I get two or more of them to fly in formation that'd be nice enough
[12:39:09] <LeoNerd> I can easily hand-solder SOIC and SOT-23s... How do TSSOPs compare to SOTs? Should I consider that doable?
[12:44:12] <theBear> pfft, "you have attained-ah, the first rrrevel, Reo-san...." heh, a lotta peoplen ever get that far, but i found the further you go, the quicker you spy the next challenge, and suddenly soic and sot don't seem tiny at all :)
[12:44:39] <theBear> so instead of saying don't boast so quick,i decided to say you should soak it up and enjoy itwhile you can
[12:45:47] <theBear> also, i get all the names/pitches mixed up in my head after soic, not like i'm ever likely to meet anyone else that can deal with them up close anyway :)
[12:46:45] <LeoNerd> Huh... actually, cheapest USB/UART bridge I can find on Farnell seems to be a SOIC14 size
[12:47:03] <LeoNerd> Which has the notable feature of being USB <-> UART + I2C, and has some GPIO pins that can be ADC inputs
[12:47:08] <LeoNerd> ... which seems Interesting and Fun
[12:49:49] <LeoNerd> That said... anything I'm targeting USB for I'd probably do directly on a 32U4 these days...
[12:50:10] <LeoNerd> huh.. for like.. twice the price of this bridge. Hrmmm
[12:50:14] <LeoNerd> Oh but soooo nice
[12:56:11] <osteri> i like the design idea of 'few components as possible'
[12:56:21] <LeoNerd> Oh indeedy
[12:56:32] <LeoNerd> USB-UART bridge + other chip is also going ot be bigger than 32U4 anyway
[12:57:36] <osteri> if you want to build your usb device 10 years from now you'll find atmega32u4, but won't find that chip :)
[12:58:57] <LeoNerd> Mmmmm yes, that's also true
[13:00:27] <theBear> i dunno, i see ft232? lasting in big-smd size for at least 10 years... majority of new non-MASSIVE-kW-power electronics i was seeing as repair/warranty dude over the years started being 98% smd from pots to passives and transformers to toggle switchies over a clear 15 years back now, and hobbiests are still just getting used to them
[13:25:45] <osteri> you might or might not find some part after 10 years. using fewer components decreases the risk of some part becoming obsolete
[13:34:01] <sebus> osteri: as parts are getting obsolete / old, they become also more expensive. In my company they made one device since 1996 or so. Based on three atmel 2051 ic's, adc0804 + pm7528 and almost nothing changed since then, just a little board layout. It was ok for some time, but last chip is now quite expensive.
[13:35:16] <osteri> sebus: yep, i think there are (must be) standards for manufacturing times for e.g. military uses
[13:37:03] <sebus> to be honest, that device can be done in same way on very few chips
[13:38:41] <sebus> to that device above: one 2051 for driving just 7-seg display/status, one for driving whole logic + analog output and one for measuring 4-20mA loops. Tricky stuff was done there since all of them are connected via rs485 on same board :D
[13:39:14] <sebus> i know, some industrial devices needs some standards, but hey...
[13:43:26] <sebus> and worst thing is that you have edit/recompile .asm files for configuration and reflash chips in case you want to change / tweak something. Meh.
[14:05:56] <aandrew> LeoNerd: TSSOP is trickier. the "rake" method of soldering works well but needs some practise
[14:06:03] <aandrew> lots of flux, no matter what you do
[14:06:55] <Lambda_Aurigae> schmartboards work wonders...but are 'spensive!
[16:43:57] <LeoNerd> Mmm... a record for my smallest piece of stripboard yet
[16:44:16] <LeoNerd> A tiny little 2x1 board, containing a 2-way pin header, on the back of which I soldered an 0805 LED
[16:44:19] <LeoNerd> because I need one to test
[16:47:42] <Xark> LeoNerd: Hehe, can't get too much smaller (well, 1x1, but doesn't sound useful). :)
[16:48:25] <LeoNerd> Yeah, I imagine this is likely the limit
[16:49:46] <LeoNerd> huhhh...
[16:49:58] <LeoNerd> Here's an odd thought. How do I know my IR LED/sensors are working? I can't personally see them
[16:50:18] <LeoNerd> Imean I guessss if I point one at the other it probably looks fine... right?
[16:52:14] <Lambda_Aurigae> well
[16:52:26] <Lambda_Aurigae> you could make an IR receiver thingie from an IR phototransistor
[16:52:28] <Lambda_Aurigae> or
[16:52:40] <Lambda_Aurigae> there used to be this little thingie we used when fixing TVs years ago.
[16:53:06] <Lambda_Aurigae> little piece of plastic that would glow when you pointed an IR remote at it and pressed a button.
[16:53:17] <LeoNerd> Oooh a flourescence pad
[16:53:19] <Lambda_Aurigae> is how we could tell the remote was actually transmitting.
[16:53:29] <Lambda_Aurigae> haven't seen one of those in YEARS though.
[16:54:33] <Lambda_Aurigae> http://hackaday.com/2015/06/15/a-simple-circuit-for-testing-infrared-remote-controls/
[16:54:47] <Lambda_Aurigae> aahh.
[16:54:49] <Lambda_Aurigae> here ya go..
[16:54:54] <Lambda_Aurigae> point it at the camera on your phone.
[16:55:00] <LeoNerd> Oooh ofcourse
[16:55:03] <Lambda_Aurigae> turn your phone onto camcorder mode!
[16:55:07] * LeoNerd waits for paint to dry
[16:55:20] <LeoNerd> (I paint a little white dot on the anode pins of the boards :) )
[16:55:25] <Lambda_Aurigae> hehe.
[16:55:34] <Lambda_Aurigae> quick drying nail polish works well.
[16:55:47] <Lambda_Aurigae> also good for locking trim pots and screws in place as well.
[16:59:49] * LeoNerd isn't the sort to use nail polish ;)
[16:59:57] <LeoNerd> It's not the sort of thing I have lying around the house
[17:00:05] * Xark just has a bunch of "Sharpie"colored markers. :)
[17:00:06] <Lambda_Aurigae> me either
[17:00:13] <Lambda_Aurigae> but I do have several colors in the shop.
[18:17:00] <LeoNerd> FUCKYES
[18:17:21] <LeoNerd> *ahem* I mean... I've just made a little proximity sensor using two IR-LEDs and an IR-photodiode
[18:17:31] <LeoNerd> Why two you may ask? Up/down gesture sensing
[18:17:52] <LeoNerd> It can detect hand near the sensor, and waving up or down
[18:19:38] <LeoNerd> The trick is not letting the sensor see either LED.. currently I have little cardboard baffles on the board
[18:19:57] <LeoNerd> I think on a real PCB I'll have to use reverse-gullwing parts and mount them on the back, so the board itself will baffle it
[20:07:35] <rue_house> :) cool
[21:00:47] <Lambda_Aurigae> https://analog10.com/posts/rotary_encoder_analog_input.html