IRC log for #qi-hardware on 20120625

00:28.43kristianpaulwolfspraul: if you have already tested some baterry options for M1 please let us now
00:29.18kristianpauli'm carrying with me milkymist since tomorrow, so i'll not have power for main avaliable all times..
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00:42.12wolfspraulnot tested
00:45.45kristianpauli was thinking buy 1.5V AA rechargable batteries until  get the 4.5V and see what worked :)
01:07.58kristianpaulwpwrak: about labsw, had you consider a cad designed case for next version? :)
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01:48.05pabs3git rm doesn't remove non-free stuff, its still in the repo history
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01:58.23rohwell.. duh
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02:32.20wpwrakkristianpaul: (M1 power) at least in theory, you need regulated 5V. just a battery pack will produce weird results, since things like USB and MIDI feed directly off the 5V input.
02:35.01kristianpaulwell, i can skip MIDI not sure about USB but try avoid it
02:35.14wpwrak(labsw) yeah. the case may be the hardest part to source. i'm stuck at the relays, though. they should be socketed, but it seems nearly impossible to find reasonably small relays with matching sockets.
02:35.47kristianpaulwpwrak: i was thinking a 4,8V (1.2V 2100mhA x 4) battery pack
02:37.28wpwrakif your batteries are fresh, you'd even be within the USB spec :)
02:38.40kristianpaul;)
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07:50.40qi-bot[commit] Adam Wang: qfp.fpd: added more info about QFP48 (master) http://qi-hw.com/p/kicad-libs/6c2cafe
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12:19.02larscdoes anybody by chance know anything about pc fan control? my laptop gives me an error at startup "Fan control". The fan is a 4wire 5V DC fan. When I apply power it starts rotating, but I don't get a feedback signal. Is this normal?
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12:19.42larscI see pwm signals on some of the ICs pins
12:23.06Aylalarsc: the mobo expects a signal from the fan
12:23.31Aylayou can fake it with a 555
12:23.49Aylaa better idea would be to change the fan if it's not working
12:24.02larscit is working fine, as far as i can see
12:24.28larscthere is just no signal on the additional pins
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12:39.45larscAyla: do you know if it would work, if I shorted control and sense?
12:40.39AylaI don't think so
12:42.24Aylamth: I made a couple of experimental changes on gmenu2x, I'd like you to (dis-)agree with before I push anything
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12:43.48larscAyla: you can always push it into a 'experimental' branch
12:44.08Aylahmm
12:44.19AylaI could do that, but I suck at GIT :p
12:44.45larscgit push remote localbrach:remotebranch
12:45.02mthis the implementation experimental or the feature itself?
12:45.21Aylafor the first change, I'm not sure of the implementation
12:45.46Aylathe first change is a "reload()" function on the Surface object, that (when applicable) restores the content of the backbuffer, so that when fading is used (loading screen and contextual menu) the very last image is displayed as the background, and not an old image
12:47.05Aylathat's was not the case when rendering at 32bpp, because then the main surface is not double-buffered (as SDL does a conversion later)
12:47.29Aylathe experimental features are a switch to 16bpp, and a menu clock set to... 48MHz
12:48.24mthgmenu2x is already slow sometimes, I prefer not to clock it down further until we resolve that slowness
12:48.48Ayla48MHz / 16bpp is as fast as 192MHz / 32bpp
12:49.27mthnot when building a file list in the explorer, I think
12:49.46mthalso some context menus take a long time to open
12:50.14Aylawhich ones?
12:50.36mthI forgot, but I'll make note of it when it happens again
12:50.41mthit happens quite often
12:51.01mthI do agree with wanting to render at 16bpp, although for themes that use a lot of transparency 32bpp might look better
12:51.14mthwhat does "reload()" do exactly?
12:51.43Aylamemcpy(raw->pixels, backbuffer, raw->h * raw->pitch)
12:54.41Aylatransparency seems to work fine
12:55.08AylaSDL takes care of that
12:57.11mthbut alpha surfaces are 32 bpp anyway and when blending, the extra precision bits on the back buffer might avoid rounding errors
12:58.36mthRGBA surfaces with 8-bit alpha, I mean; you can have a 16bpp surface with color keyed alpha iirc, or RGBA5551
13:01.29Aylano, because the back buffer is not RGBA
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13:02.29mthI mean the surface blitted onto the back buffer might be 32 bpp
13:03.02Aylayes
13:03.12Aylawell, of course we lose a few bits of precision
13:03.17Aylabut that's expected
13:07.14mthanyway, we want to be able to render at 16bpp, whether we make that the default or not
13:08.03mthwhat is that "raw" buffer?
13:08.27Ayla"raw" is the name you gave to the SDL_Surface contained inside the Surface object
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13:10.32mthwhich Surface object do you want to call it on then?
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13:11.00mthwhat I don't understand is, why would there be an off-screen version of the current frame?
13:11.14mthI'd expect a repaint() rather than a reload()
13:13.58mthhmm, why does RGBAColor use 16 bits per component?
13:17.48AylaI call it on the main Surface object, the one that corresponds to the framebuffer
13:18.44Aylawhen using double buffering, that buffer corresponds to the one being sent to the LCD
13:19.45mthso the front buffer? that doesn't sound likely; SDL wouldn't give you the front buffer pointer unless you did some trickery
13:20.03Aylayes, I did :p
13:20.35AylaI save a pointer to raw->pixels on the "flip" function, before flipping the SDL_Surface
13:20.37mththat will break if we ever implement the rotating buffer via v4l2 idea
13:21.12mthI really prefer to repaint rather than save old frame contents
13:21.49mthrepaint should be easier than restore and if it is not, that is something that should be fixed and will improve the code overall
13:23.31AylaI did restore because repainting really isn't easy
13:23.49Aylawe really should rewrite gmenu2x from scratch
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13:54.26wpwraki wonder how many times gmenu2x has died in people's dreams already. everybody seems to have an assassination plan, yet it still lives on ;-)
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18:05.09larscAyla: how crazy is this? The fan wouldn't work the whole weekend long. Took it with me to work today, hooked it up to a power supply and it worked fine. Now I took it back home and it works fine again with the laptop...
18:30.59kristianpauldust dust..
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20:31.14Aylalarsc: it just needed some fresh air ;)
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