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| 02:11.31 | Textmode | whitequark: plural of cluebat, a bludgeoning weapon who's blows supposedly imbue the target with a clue...similar in concept to a clue-by-four |
| 02:30.11 | mth | related topics: lart |
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| 02:51.23 | Textmode | mth: :3 |
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| 04:58.48 | wpwrak | phew. server/firewall resurrected. after 3 hours of fighting :-( |
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| 06:05.49 | wolfspra1l | wow |
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| 10:08.08 | qi-bot | The build was successful: http://fidelio.qi-hardware.com/~xiangfu/build-nanonote/openwrt-xburst.full_system-20120509-0421 |
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| 16:04.46 | whitequark | I discovered an interesting thingy |
| 16:04.51 | whitequark | USB Charging Specification |
| 16:05.08 | whitequark | and there's something called ACA |
| 16:05.12 | whitequark | accessory charging adapter |
| 16:05.37 | whitequark | basically if you have an otg host and want to power a peripheral and charge the host simultaneously, there's an ID pin value for that |
| 16:06.03 | whitequark | (full ACA requires two FETs, four resistors and a small uC, but that's only required to handle two connected OTG devices) |
| 16:06.20 | whitequark | so I just hardwired everything for a case of OTG Host -- Regular Peripheral |
| 16:06.36 | whitequark | I wonder why no one ever manufactures ACAs |
| 16:07.44 | whitequark | seriously, it's an incredibly valuable thing to have--for example, an OTG host alone most certainly cannot power a hard disk |
| 16:07.54 | whitequark | or an external CDMA modem (I tried) |
| 16:08.15 | whitequark | and there's not even a single page on some site last updated in 2008 widh design from 1998 |
| 16:08.18 | whitequark | weird |
| 16:09.51 | wpwrak | sounds like a standard that has only been implemented on one platform: |
| 16:09.55 | wpwrak | on powerpoint :) |
| 16:09.57 | whitequark | I have yet to patch PMIC driver in my OTG host, through. it doesn't support this mode out of the box |
| 16:10.11 | whitequark | presumably because there's no adapters at all |
| 16:10.21 | whitequark | yeah |
| 16:10.25 | whitequark | but it's really cool and useful |
| 16:10.40 | wpwrak | perhaps it would be :) |
| 16:10.56 | whitequark | when I understood what I want, I was quite sure there's a standard for it |
| 16:11.22 | whitequark | now I just hope that FET layout in that PMIC will allow me to configure it to not short-circuit OTG charge pump to external charger |
| 16:11.25 | whitequark | like it tries to do now |
| 16:11.40 | whitequark | surprisingly, OTG pump wins |
| 16:12.01 | whitequark | and external charger painfully squeaks |
| 16:12.33 | wpwrak | there's a "standard" for almost everything :) |
| 16:12.37 | whitequark | (it was an accident. some moron made an USB cable with ground being without insulation and ID pin in a black insulation. of course I fucking mixed up these wires.) |
| 16:13.09 | whitequark | I regularly meet with USB cables manufactured by morons |
| 16:13.18 | whitequark | previous one had D+ and D- switched |
| 16:13.28 | whitequark | that is, D+ was white and D- was green |
| 16:13.40 | whitequark | took me a day of debugging to determine why my device won't enumerate. yuck. |
| 16:14.14 | whitequark | now I want to kill. |
| 16:15.29 | wpwrak | as long D+/D- are matched end-to-end .. :) |
| 16:15.52 | whitequark | they were in the cable. |
| 16:16.11 | whitequark | but I cut it in halves and connected the end with A plug to my device. |
| 16:16.50 | whitequark | I somewhat expect that once I'll encounter a cable where ground will be red and vbus will be, I dunno, green |
| 16:17.03 | wpwrak | black ? :) |
| 16:17.10 | whitequark | and then something expensive will explode miraculously |
| 16:17.35 | whitequark | it's funnier with green |
| 16:17.42 | wpwrak | that's what you get for tampering with carefully engineered equipment |
| 16:17.44 | whitequark | clamp diodes explode better |
| 16:18.10 | whitequark | "carefully engineered equipment" oh, you reminded me of a phrase I once seen in a manual |
| 16:18.19 | wpwrak | rule #67345: never trust a cable's colors at face value. always measure :) |
| 16:18.27 | whitequark | >Your device is a product of superior design and craftsmanship and should be treated with care. |
| 16:18.49 | wpwrak | translation: "keep your dirty fingers away" |
| 16:18.59 | whitequark | I especially like the part about "superior design" |
| 16:19.06 | whitequark | makes me think of nazis or something like that. |
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| 16:19.37 | whitequark | looks like nokia first made the phrase and then everyone else copied it |
| 16:19.49 | whitequark | I seen it in docs for some EXCEPTIONALLY CRAPPY wireless modules |
| 16:20.21 | whitequark | and by "exceptionally" I mean that they can compete with PICs in crappiness |
| 16:20.45 | whitequark | i.e. adding them to your device will yield a net negative result. |
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| 20:34.57 | LunaVorax | Hello everyone! |
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| 21:02.23 | whitequark | I never thought one could screw up in so many places in a simple USB connector |
| 21:02.27 | whitequark | 1) wrong colors |
| 21:02.35 | whitequark | 2) wire too thin for a hard drive to spin up |
| 21:02.41 | whitequark | 3) loose contacts |
| 21:02.44 | whitequark | 4) what else?.. |
| 21:07.49 | viric | unconnected shield |
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| 21:12.08 | GNUtoo-desktop | whitequark, I'll try to order a new usb connector for my nexus S( serial cable broke some time ago) from sparkfun(so it's rock solid, breakout board) |
| 21:12.20 | GNUtoo-desktop | I'll do it tomorrow |
| 21:12.27 | GNUtoo-desktop | the previous one broke.... |
| 21:26.22 | viric | is sparkfun related to the unconnected shield? |
| 21:30.08 | whitequark | viric: unconnected shield is required by spec on the peripheral side |
| 21:30.32 | whitequark | to avoid parasitic currents via groundloop |
| 21:30.50 | whitequark | that is, on host side it is connected and on peripheral side it isn't. |
| 21:32.46 | viric | ah nice |
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| 23:08.38 | DocScrutinizer | haha, that's fun, for OTG |
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