2015-01-18 00:21 fmeerkoetter has quit [Ping timeout: 264 seconds] 2015-01-18 01:04 is there a single component thats like a diode but with out the loss? need a way of stoping a li batt being charged by the device it's connected too becuase i have a faster charged connected to it instead but i want the device to monitor the batt level so i know how much is left roughly and can power off when the bat is low. 2015-01-18 01:08 schottky diode has a voltage drop of 0.1-0.2V 2015-01-18 01:08 good ones even 0.05 2015-01-18 01:10 hm, apparently diodes with Vf<0.22 do not exist 2015-01-18 01:13 what about these mosfets? a combined with schottky diode? 2015-01-18 01:13 a=and 2015-01-18 01:13 or something? 2015-01-18 01:13 i'm having a look at how the nano note does it and is that how? 2015-01-18 01:14 http://en.qi-hardware.com/wiki/Power_Supply_Circuit 2015-01-18 01:14 btw the soultuion needs to take around 1A 2015-01-18 01:15 take=cope 2015-01-18 01:15 with 2015-01-18 01:15 usually a schottky is used for this purpose 2015-01-18 01:15 a all in one component as it's attractions thats all 2015-01-18 01:16 schottky with nothing else? 2015-01-18 01:16 really? 2015-01-18 01:16 why not 2015-01-18 01:17 idk :) 2015-01-18 01:17 efficacy, 2015-01-18 01:17 badly spelled 2015-01-18 01:17 efficiency 2015-01-18 01:17 i find it surprising 2015-01-18 01:18 and what about a usb 5v 500ma,1A,2A load? 2015-01-18 01:18 with a.. 2015-01-18 01:19 still a schottky? 2015-01-18 01:29 thanks for you input 2015-01-18 01:29 :) 2015-01-18 02:46 Haswell has joined #qi-hardware 2015-01-18 03:10 Nik05 has quit [Remote host closed the connection] 2015-01-18 03:11 Nik05 has joined #qi-hardware 2015-01-18 04:07 atommann has joined #qi-hardware 2015-01-18 04:33 sb0 has joined #qi-hardware 2015-01-18 05:03 atommann has quit [Quit: Leaving] 2015-01-18 06:59 jekhor__ has joined #qi-hardware 2015-01-18 07:12 kyak has quit [] 2015-01-18 07:16 kyak has joined #qi-hardware 2015-01-18 07:16 kyak has joined #qi-hardware 2015-01-18 07:26 fmeerkoetter has joined #qi-hardware 2015-01-18 07:44 wpwrak: http://www.cnx-software.com/2015/01/18/one-dollar-development-board/ :) 2015-01-18 07:45 meh. stm8 2015-01-18 07:55 whitequark: yeah it's only stm8 ...i think the price point is what attractive ...but the tools is not attractive 2015-01-18 08:09 xiangfu has joined #qi-hardware 2015-01-18 08:18 xiangfu has quit [Remote host closed the connection] 2015-01-18 08:20 xiangfu has joined #qi-hardware 2015-01-18 08:50 Haswell has quit [Quit: Saliendo] 2015-01-18 09:04 FAMAS has quit [Read error: Connection reset by peer] 2015-01-18 09:21 xiangfu has quit [Remote host closed the connection] 2015-01-18 09:34 wej has quit [Ping timeout: 272 seconds] 2015-01-18 09:39 wej has joined #qi-hardware 2015-01-18 09:48 pcercuei has joined #qi-hardware 2015-01-18 10:28 jekhor__ has quit [Ping timeout: 244 seconds] 2015-01-18 11:28 wej has quit [Ping timeout: 245 seconds] 2015-01-18 11:36 wej has joined #qi-hardware 2015-01-18 11:44 wej has quit [Ping timeout: 250 seconds] 2015-01-18 11:51 wej has joined #qi-hardware 2015-01-18 12:00 fmeerkoetter has quit [Ping timeout: 264 seconds] 2015-01-18 12:02 http://crayfis.ps.uci.edu/ 2015-01-18 12:23 rubbish. those phones are not detectors. they're GENERATORS. generators of evil deadly cosmic rays. SCIENTIFIC FACT: the number of DEATHS, globally, has INCREASED since the widespread use of mobile phones, around 2000, to today. DESPITE mortality in general having decreased thanks to better medicine, etc. 2015-01-18 12:24 science doesn't lie. there is a murderous conspiracy behind mobile phones, driven by corporate greed ! 2015-01-18 12:24 FAMAS has joined #qi-hardware 2015-01-18 12:24 FAMAS has quit [Max SendQ exceeded] 2015-01-18 12:27 FAMAS has joined #qi-hardware 2015-01-18 12:27 FAMAS has quit [Max SendQ exceeded] 2015-01-18 12:31 FAMAS has joined #qi-hardware 2015-01-18 12:43 fmeerkoetter has joined #qi-hardware 2015-01-18 13:19 driven by the soylent green industry 2015-01-18 13:21 the soylent-nestle global conglomerate ! 2015-01-18 14:52 valhalla has quit [Ping timeout: 264 seconds] 2015-01-18 15:06 FAMAS has quit [Read error: Connection reset by peer] 2015-01-18 15:31 valhalla has joined #qi-hardware 2015-01-18 16:05 pcercuei has quit [Ping timeout: 245 seconds] 2015-01-18 16:07 pcercuei has joined #qi-hardware 2015-01-18 16:22 sb0 has quit [Quit: Leaving] 2015-01-18 16:50 atgreen has quit [Remote host closed the connection] 2015-01-18 17:10 jekhor__ has joined #qi-hardware 2015-01-18 18:06 win 9 2015-01-18 18:06 grml 2015-01-18 18:06 sorry :-) 2015-01-18 18:11 win 9 is ok, what scares me are the people wo type e.g. 'win 74' 2015-01-18 18:22 FDCX_ has joined #qi-hardware 2015-01-18 18:33 I do :p 2015-01-18 18:40 arossdotme: (diode w/o loss) there are "ideal diode" components made of mosfet 2015-01-18 18:43 arossdotme: 2nd hit on google http://www.linear.com/product/LTC4358 2015-01-18 18:44 there are a lot others with different specs 2015-01-18 18:49 http://www.digikey.com/product-search/en/integrated-circuits-ics/pmic-or-controllers-ideal-diodes/2556704 2015-01-18 18:51 http://cds.linear.com/docs/en/datasheet/4413fc.pdf 2015-01-18 19:06 arossdotme: this might be almost what you asked for: http://cds.linear.com/docs/en/datasheet/4412hvfs.pdf 2015-01-18 19:07 thx, i'll have a look 2015-01-18 19:12 depending on your requirements a component like http://www.ti.com/lit/ds/symlink/tps2104.pdf might even be better suited 2015-01-18 19:18 my requirements are: that it's compact and self contained and preferably doesn't need external components as it's being wired inbetween things/modules. 2015-01-18 19:19 it's being used for... 2015-01-18 19:22 preventing the device (a #zipit ) from charging my external 6600mah li batt that has it's own 1A charger. the zipit is connect to directly to the battery so the zipit is more efficiently powered and also i can use it's battery monitoring 2015-01-18 19:22 (btw if you know of a small compact faster charger for a 6600mah li batt i'd like to know :) ) 2015-01-18 19:23 also.. 2015-01-18 19:25 ChanServ has joined #qi-hardware 2015-01-18 19:27 i'm not sure about this but to stop my external usb power boost which powers the usb hub from powering the zipit as the exteral mains/car power supply to charge the battery and power the zipit while pluged in, is also connected to the usb hub in parallel with the usb boost 2015-01-18 19:29 - to stop the usb boost feeding into the dc_in of the zipit and the mains pwr supply feeding into the ower boost but is that a problem in the first place? idk 2015-01-18 19:30 I'm also planning to use this with my gta04 when it comes in the post :D 2015-01-18 19:30 so i hope that illustrates my usage case 2015-01-18 19:31 but you have been a huge help with giving me "ideal diode" 2015-01-18 19:31 i'll be busy trying to work out which one to go for... hmmmmmm 2015-01-18 19:39 oh so it's 1A+/- for the usb boost and less then 500ma for the zipit 2015-01-18 19:39 so i'm not sure if your last one is suited current wise? 2015-01-18 19:39 are you sure that's not a class-XY problem? Anyway I fail to get the jigsaw puzzle assembled to form a picture of what you're planning to do 2015-01-18 19:41 jwhitmore has joined #qi-hardware 2015-01-18 19:42 aiui you use some device "zipit" unknown, an external USB battery pack, a USB hub, and internal battery in zipit? auxiliary power from car 12V? even 2 hubs? sorry you lost me 2015-01-18 19:42 maybe a sketch would help a lot 2015-01-18 19:44 yea thought i might need to draw it :0 2015-01-18 19:44 arr i meen :) not :0 2015-01-18 19:45 anyway external USB battery packs commonly use different connections for supplying power and for themselves getting charged 2015-01-18 19:46 https://mozzwald.com/zipitz2 2015-01-18 19:46 the point of this is to make a DIY usb batt pack with some extra advantages 2015-01-18 19:46 USB hubs are supposed to feed trough VBUS supply form uplink (to host) to the N downlink ports, but usually not the inverse direction. They also are supposed to not feed aux power from a PSU to the uplink port 2015-01-18 19:46 /using my exisiting spear batt 2015-01-18 20:03 I however think there are a few USB hubs with built-in battery, maybe that's a useful alternative, replacing the internal battery by your external spare batt 2015-01-18 20:04 lrockhq has joined #qi-hardware 2015-01-18 20:21 ooooe usb hub with built in batt, theres a thought 2015-01-18 20:21 but i alreadly have this big batt waiting to be put to use :) 2015-01-18 20:22 heres a drawing 2015-01-18 20:22 DocScrutinizer05, https://filetea.me/t1sf2Bh6pXfTxCufX8M2zKWgQ 2015-01-18 20:24 arhuaco has quit [Ping timeout: 264 seconds] 2015-01-18 20:25 https://www.adafruit.com/product/259 2015-01-18 20:25 https://www.adafruit.com/products/2030 2015-01-18 20:37 arhuaco has joined #qi-hardware 2015-01-18 20:37 oh yea no zipit batt, its dead 2015-01-18 21:01 looks overly complicated. zipit already has a LiIon charger (bq24032?) 2015-01-18 21:02 why use a discrete one? 2015-01-18 21:03 34035 2015-01-18 21:03 dang, bq24035 2015-01-18 21:04 faster charge rate, sas told with my size batt it night not even manage to charge it fully 2015-01-18 21:04 sas=was 2015-01-18 21:05 when being used with gta04 it can charge on its own 2015-01-18 21:05 that is to say its standalone 2015-01-18 21:06 Nik05 has quit [Remote host closed the connection] 2015-01-18 21:07 well, I doubt the "can't charge to full" is any correct 2015-01-18 21:09 Nik05 has joined #qi-hardware 2015-01-18 21:11 tbh even when I'd plan for all the function blocks you did, I'd simply use a 2-throw relay to switch between operation modes, rather than ideal diodes 2015-01-18 21:12 FDCX_ has quit [Ping timeout: 240 seconds] 2015-01-18 21:16 powering battery contacts of a BQ24035 device from a LiIon via an ideal diode won't pan out 2015-01-18 21:16 in device aux-powered mode 2015-01-18 21:17 BQ24035 will try to charge and only see the diode 2015-01-18 21:17 either you conect the battery as supposed to (directly), or not at all 2015-01-18 21:19 why do you need the USB booster for hub? doesn't zipit provide VBUS? 2015-01-18 21:25 lrockhq has quit [Quit: Leaving] 2015-01-18 21:28 btw http://www.ti.com/lit/ds/symlink/bq24035.pdf says the battery charge current can go as high as 1500mA. I'd think that's sufficient for most fastcharging purposes 2015-01-18 21:30 alternatively you can operate the zipit from battery only, even while battery gets charged by external charger circuit. No need to power the zipit from AC in during charging battery like that 2015-01-18 21:49 34035? 2015-01-18 21:50 a relay! but the power consumption... isn't it a lot? 2015-01-18 21:51 admittedly it bugged me "can't charge to full" ,thought it sounded odd, thx for your input 2015-01-18 21:54 re usb booster is needed as the zipit does not have a 5v our unless it's pluged into aux pwr or a 3.3v to 5V converter is used but max 300ma current out. which is not enough for the semi pro usb audio interface i want to run from it. gta04 also has a max of 100ma 2015-01-18 21:54 our=out 2015-01-18 21:57 re "bq24035 says the battery charge current can go as high as 1500mA" i assumed in the zipit it's not programmed to do that. the original batt was 1200mah. it does have a 3rd wire which i assume is a thermomistor 2015-01-18 22:01 DocScrutinizer05, hmm lots to think about... thx again for you input as always. maybe i sound do some tests with the zipit charger to see how much current it charges with... 2015-01-18 22:07 ok relay not such a issue as it's only when pluged into mains but for the fact it interpts the zipit as it loses pwr 2015-01-18 22:08 porchao has quit [Quit: Leaving...] 2015-01-18 22:10 " it does have a 3rd wire which i assume is a thermomistor"= it does have a 3rd wire which looks like a thermomistor 2015-01-18 22:11 measured with test meter 2015-01-18 22:22 pcercuei has quit [Quit: dodo] 2015-01-18 22:53 fmeerkoetter has quit [Ping timeout: 264 seconds] 2015-01-18 22:59 jekhor__ has quit [Ping timeout: 252 seconds] 2015-01-18 23:30 [commit] Werner Almesberger: slicer/slicer.c: rewrite - we now consider all non-horizontal facets (master) http://qi-hw.com/p/cae-tools/005dcc3 2015-01-18 23:30 [commit] Werner Almesberger: cameo/area-poly2d.c (area): fail if any paths are open (master) http://qi-hw.com/p/cae-tools/4d15951 2015-01-18 23:30 [commit] Werner Almesberger: cameo/poly2d.c (paths_to_polys_z): correctly ignore empty paths (master) http://qi-hw.com/p/cae-tools/c9c0e88 2015-01-18 23:30 [commit] Werner Almesberger: cameo/path.c (path_connect, et al.): move to new file connect.c (master) http://qi-hw.com/p/cae-tools/f94fb2f 2015-01-18 23:30 [commit] Werner Almesberger: poly2d/p2d_attrib.c (p2d_no_intersect): don't test last vs. first segment (master) http://qi-hw.com/p/cae-tools/84f9d3c 2015-01-18 23:30 [commit] Werner Almesberger: poly2d/p2d_area_holes.cpp (recurse_area): correct confusing indentation (master) http://qi-hw.com/p/cae-tools/6084b52 2015-01-18 23:30 [commit] Werner Almesberger: poly2d/p2d_attrib.c (angle_3): put spaces around operators (master) http://qi-hw.com/p/cae-tools/de7df0b 2015-01-18 23:30 [commit] Werner Almesberger: poly2d/p2d_attrib.c: correct line wrap in title comment (how did this get there ?) (master) http://qi-hw.com/p/cae-tools/05d3d50 2015-01-18 23:30 [commit] Werner Almesberger: poly2d/p2d_attrib.c (angle_3): don't divide by zero ... (master) http://qi-hw.com/p/cae-tools/7ca942d 2015-01-18 23:30 debugging geometry problems is hell :-( 2015-01-18 23:45 atgreen has joined #qi-hardware