#qi-hardware IRC log for Friday, 2011-10-07

tuxbrain_HxxHhzommm do you belive this can work with NN , a GSP with 8:10 SPI interface :) http://shop.4dsystems.com.au/modules-on-the-go/292-motg-gps.html09:27
kyaki think it should work.. Probably would need to write an SPI driver for it though09:41
tuxbrain_HxxHhzoI have to make a order on this shop for other reasons, I don't have time to hack with it but I can buy a pair it and loan one to any one with knowledge and time to do so09:48
kristianpaulYes it should work,12:54
kristianpaulBtw linux dont have already a spi bitbanging  driver ?12:54
Action: kristianpaul have a spi ethernet somwhere too12:55
kristianpaulah, no, well, we have werner's spiio :-)12:57
kristianpauloh,  MOTG is how they call to all their 8:10 modules?13:00
kristianpaulnice13:00
Action: wpwrak hates blackouts13:14
kristianpaultime to import some magic solar panels from china? :)13:15
wpwrakor put some diesel generator on the terrace ...13:16
kristianpaultoo13:16
mstevenswpwrak: don't drink so much14:00
wpwrakhehe ;-) not a drop actually. too wet already outside :)14:02
qi-botThe build was successfull, see images here: http://fidelio.qi-hardware.com/~xiangfu/compile-log/openwrt-xburst.full_system-10062011-1136/15:45
Action: whitequark is quite happy today18:34
whitequarkhttp://whitequark.org/blog/2011/10/07/my-first-factory-made-pcbs/18:34
wpwrakheh, nice :) the "organic" layout would drive me crazy if i had to debug anything, though18:36
kyaknice! you didn't make those in Russia, did you?18:36
whitequarkkyak: nope, http://iteadstudio.com has done them. $25, two days in China and two weeks at Russian customs18:37
whitequarkwpwrak: why? this layout reduces the number of vias by factor of 2 or 3. isn't that a simplification?18:38
kyakwhitequark: really cheap, too :)18:41
whitequarkkyak: that's why. also, while it is not very fast, it is actually faster than to do it in Russia. a friend works for a Zelenograd company which makes sonic fish scanner (or however that is called). they've bought a pcb in Russia, and it'll take ca. 1.5 months to get it18:42
whitequarkand of course it is more expensive.18:42
wpwrakwhitequark: (layout) naw, i just mean the same topology but with straight lines. makes it easier to spot anomalies and to follow traces18:44
whitequarkwpwrak: ah. maybe. I'm not very experienced in that, as you may guess :D18:54
whitequarkthere is even a stupid error: no thermals18:54
whitequarkthat'll be a pain18:54
wpwrakyou mean thermal relief ? yeah. you'll suffer for that ;-)18:55
wpwrakluckily, there are not so many pads/pins with this issue18:56
whitequarkthey are called `thermals' in Eagle, and I didn't seen any references in other places. Thanks, now I know how that's called18:57
wpwraki think the openmoko debug board (v2) had the same flaw. of course, you don't notice during industrial SMT because the reflow oven heats the whole board. but soldering those optional connector was ... surprisingly difficult18:57
whitequarkI've seen something like that in a router18:57
whitequarkthere was a debug port, but without thermal reliefs.18:58
whitequarkeven worse, the holes were filled with SnAuCu solder18:58
whitequark... that was the moment I realized that a RoES directive should be written. you know, Restriction of Engineer's Sufferings18:59
steve|mand when soldering you look at your soldering station and think "moar power igor!!" ;)18:59
whitequarkI think I've spent a whole hour soldering three freaking holes.18:59
wpwraksounds like "snafu" ;-)18:59
steve|mwpwrak: that's what I read at first as well :)19:00
whitequarkindeed.19:00
wpwrak(thermal relief) just checked it ... and i got it right :) https://en.wikipedia.org/wiki/Thermal_relief_pad19:00
steve|mah, SnAuCu is ROHS solder.. then snafu makes sense19:01
wpwrakwhitequark: you could have used a drill to empty the hole ;-))19:02
whitequarkthat metals really should go where they belong. gold to plating and intra-IC connections. silver to rings, necklaces and relay contacts, as all of them look nicer with it19:03
whitequarkwpwrak: ah. a drill. I even had one. thanks, I'll remember that19:04
tuxbrain_HxxHhzowpwrak: have you seen this?  http://shop.4dsystems.com.au/modules-on-the-go/292-motg-gps.html21:18
wpwraktuxbrain_HxxHhzo: cute ! :) but i'm still waiting for someone to show off one of these: http://shop.4dsystems.com.au/modules-on-the-go/291-motg-96.html21:20
tuxbrain_HxxHhzoshow off? sorry what than means? 21:22
wpwrakwhitequark: btw, here's a more detailed discussion of thermal relief: http://www.edaboard.com/thread38506.html21:22
wpwraktuxbrain_HxxHhzo: get one, make it work, post pictures :)21:22
tuxbrain_HxxHhzoI can see the utility of the gps , apart of the cool factor, what is the utiliti to add such second screen to NN? (I can buy one of those and if you help me with the app I can also make the photos)21:24
wpwrakisn't the coolness factor enough reason ? ;-)21:25
tuxbrainhttp://www.4dsystems.com.au/downloads/MOTG/MOTG-96/Docs/MOTG_Displays_C_Lib.c , do you think can implement spi_* fuctions they call in in his library?21:33
wpwrakprobably. are there schematics of the way they use uSD ?21:36
tuxbrainthey have full Datasheet here, http://www.4dsystems.com.au/downloads/MOTG/MOTG-96/Docs/MOTG-96-DS-rev1.pdf21:41
wpwrakheh, the purest SPI. sure. it's exactly like the SPI you've already used with the arduino.21:54
tuxbrainLooks promising :) , Is the Nanomap developer already here? I think we can bost this app connecting a real GPS to NN :), also NN can become a real GPS cool gadget for OpenStreet mappers creating some app to edit streets names or so... 22:02
tuxbrainThey also mention a WiFI MOTG device but I can't see any info about it... I will ask22:03
wpwrakthey seem to be a good place for uSD gadgets :)22:09
wpwrakwell, faux-uSD ;-)22:09
tuxbrainfaux-uSD?22:09
wpwrakif looks like uSD but doesn't speak uSD22:10
tuxbrainplacing order for the gps and the oled ,do you think the program MOTG will also be needed? http://shop.4dsystems.com.au/modules-on-the-go/294-motg-programmer.html22:11
wpwraknaw, that's just some <weird>-to-faux-uSD converter. we don't need that. we have the ben ;-)22:14
tuxbrainok :)22:14
tuxbraindone22:16
tuxbrainAlso asked the reseller conditions, lets see, maybe we can increase the NN accesories in Tuxbrain22:18
wpwrakbtw, any changes in ben sales recently ?22:22
wpwrakor just constantly low ?22:23
qi-bot[commit] Werner Almesberger: m1rc3/norruption/: infrastructure and test script for temperature measurements (master) http://qi-hw.com/p/wernermisc/874161622:26
tuxbrainlow, but I think I have slightly more sales than wolfgang, I have sell two this week :P22:28
wpwrakwhee ! :) and how are atben/atusb doing ?22:30
tuxbrainfreeze,  I hope blogic  project can re-activate the thing22:33
kristianpauli remenber nanomap had support for gpsd, but it never worked for me..22:33
kristianpaulis built-in the atena for this gps receiver?22:34
wpwrak(freeze) :-(22:34
wpwrakand ubb ?22:34
kristianpauls/atena/antena22:35
tuxbrainIf not was for Arduino and Efika and seem than the rugged PDA  also start to catch some interest Tuxbrain has closed some months ago... 22:35
tuxbrainkristianpaul: yes is buit in22:36
tuxbrainubb as freeze as atben22:36
kristianpaulwow there is even a RF24G. wonder more specs about that22:36
kristianpaultuxbrain: you mean atusb rules sales?22:36
wpwrakgnats--;  /* first one this spring */22:37
tuxbrainall Qi related products are a very low (or totally frozen ) on sales at least in tuxbrain22:37
wpwrakhmm. bad :-(22:38
kristianpaul:-/22:38
kristianpaulha practicaly you can skip NEMA, seems that module provides latitude and longitude with some reads22:39
tuxbrainthat is good or bad? :P22:39
kristianpaulgood :)22:40
kristianpaulwpwrak: is that spiio what you meantioned tuxbrain already tested with an arduino?22:40
kristianpaulah nv, NEMA actually does that ;-)22:40
wpwrakit's this piece of high-tech: http://projects.qi-hardware.com/index.php/p/wernermisc/source/tree/master/spiio/22:40
kristianpaulyes reading it now looks quite simple !!22:41
kristianpaulamazing22:41
tuxbrainkristianpaul: yes it works, but I screewed some timer in the arduino part that doesn't let me use the delay function after SPI communication, but a part than that it works like a charm22:41
kristianpaulgood to know22:41
tuxbrainI think is the Lib I use to make arduino spi slave, is not the official due the official one is only master, I had no time/knowledge to review what has messed with timer in charge of delay function22:43
qi-bot[commit] Werner Almesberger: m1rc3/norruption/mtemp: so Ubuntu now has a usbtmc module that gets in the way. rmmod :) (master) http://qi-hw.com/p/wernermisc/84b2d4122:43
kristianpaulwpwrak: a rmmod inside a loop, is that dangerous it came back again? :)22:45
tuxbrainmmm 4DG aslo has some interesting TTL cameras :P just for still pictures but interesting http://shop.4dsystems.com.au/camera-and-imaging-modules/256-9200.html22:48
kristianpaulthat ttl is 3v3 lets see22:51
wpwrakkristianpaul: seems that the device disconnects and re-enumerates occasionally. and then the module comes back. i should look into a proper way to disable it. or use the usbtmc module instead of my own driver.22:51
kristianpaulyes :)22:51
kristianpaulwpwrak: may be because the 30m? :)22:52
kristianpaultuxbrain: very coold stuff on that shop, nice finding !22:52
wpwrak(30m) maybe. will be fun if it's really highly unreliable.22:52
wpwrak.. because i'll also have m1-jtag and labsw on that hub22:55
DocScrutinizerwpwrak: you for sure can answer this and scratch my itch: is scheduler plugged hard into kernel, or can it get swapped, at least at boot-time?23:10
wpwrakhmm, good question. you mean the CPU scheduler, i assume. (there are other schedulers, for disk, network, etc. these are all modular)23:12
DocScrutinizeryup, cpu, as in bfs/cfs23:12
wpwrakthe cpu scheduler used to be fixed. but that may have changed.23:12
DocScrutinizerI guess it hasn't then...23:13
wpwrakyeah, it's modular no23:14
wpwrakw23:14
DocScrutinizerindeed?23:14
DocScrutinizerwow, since when? (kernel version)23:14
wpwrakbut now 100% modular. there's some hard-coded knowledge about the schedulers23:15
wpwrakthere are four schedulers: stoptask, rt, fair, and idletask23:16
Action: DocScrutinizer (tires to kill a kernel fork done for bfs for the giggles, err "because it's allegedly way faster" without any decent comarative statistics on the target platform)23:17
wpwrak;-)23:17
wpwrakthat is, that's the status of "Flesh-Eating Bats with Fangs" aka 2.6.3823:19
kristianpaulhttps://lbtwiki.cern.ch/bin/view/Online/WebHome sysdmin wiki cern?23:19
DocScrutinizerwpwrak: pointer to that bfs-fork: http://talk.maemo.org/showthread.php?t=78110&page=423:22
DocScrutinizeractually post#27,30 are funny.23:49
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