| 00:10.58 | joe_bleau | I *think* that's the sysop of lhn |
| 00:11.56 | prpplague | yea, i googled |
| 00:15.43 | joe_bleau | I'll shoot him an email |
| 00:19.27 | prpplague | i left my reading material at the office :( |
| 00:19.32 | joe_bleau | Were y'all off today? |
| 00:24.35 | prpplague | yea, but i went in anyway, since its not a holiday here |
| 00:26.52 | prpplague | joe_bleau: check this one out - Item number: 6061707262 |
| 00:28.06 | joe_bleau | Looks like a snap in PDA |
| 00:28.57 | prpplague | yea |
| 00:29.01 | prpplague | it is |
| 00:30.22 | joe_bleau | Here's a basic teardown report on it: http://www.eng.yale.edu/product/ebook/reviews/gene2.doc |
| 00:40.27 | prpplague | hmm, i don;t have a doc reading let me see if can read it from google |
| 00:43.18 | joe_bleau | Google will show it as html, but I didn't get the pictures. |
| 00:44.39 | joe_bleau | Want a PS? |
| 00:45.11 | joe_bleau | Wait, a .pdf would be better; it's much smaller. |
| 00:45.19 | prpplague | joe_bleau: naw, i'm installing abiword down |
| 00:49.00 | prpplague | interesing |
| 00:49.09 | prpplague | what is this "book of spells" he refers to |
| 00:49.35 | joe_bleau | No clue. It's not extremely well written, you know? |
| 00:49.50 | prpplague | yea, abiword didn't do the pictures :( |
| 00:50.12 | joe_bleau | I think it's viewed as a competitive analysis from the point of view of the devs at: http://www.eng.yale.edu/product/ebook/index.html |
| 00:50.16 | joe_bleau | Lemme try this dcc thingy... |
| 00:51.34 | prpplague | i have dcc blocked |
| 00:51.43 | joe_bleau | OK, I'll PM you a link in a sec |
| 00:51.49 | prpplague | ok thanks |
| 00:52.18 | prpplague | ahh its some sort of pda dealing with harry potter |
| 00:53.18 | prpplague | tiger electronics |
| 00:54.48 | prpplague | yep got it |
| 00:54.49 | prpplague | thanks |
| 00:55.02 | joe_bleau | Yes, so I see from the logs |
| 00:55.29 | joe_bleau | I just run winders |
| 00:56.08 | prpplague | hehe |
| 00:56.35 | prpplague | joe_bleau: i normally have doc2pdf , but i just reloaded this box |
| 00:57.09 | prpplague | he could have taken some better pictures |
| 00:57.27 | joe_bleau | The quality was a bit better in the .doc |
| 00:57.50 | prpplague | i meant more information like the lcd and pcb |
| 00:57.58 | prpplague | joe_bleau: did you back up one dir on that url? |
| 00:58.18 | joe_bleau | tried to, couldn't list the directory. |
| 01:00.39 | prpplague | http://www.eng.yale.edu/product/ebook/ |
| 01:03.06 | prpplague | joe_bleau: i'm thinking about getting that one unit with the green removable module |
| 01:03.28 | prpplague | joe_bleau: worst case, i could use the empty space with the pda removed to mount a new lcd |
| 01:04.14 | prpplague | joe_bleau: i'm so lame but i love the color scheme of that one |
| 01:21.02 | *** join/#edev T0mW (n=Tom@24.152.249.149.res-cmts.sth.ptd.net) |
| 01:21.08 | prpplague | T0mW: hey hey |
| 01:21.12 | prpplague | T0mW: whats cookin? |
| 01:21.32 | T0mW | nut'n |
| 01:21.58 | T0mW | Just working on another design, bringing it up. |
| 01:22.13 | prpplague | i always have something to ask you, i always forget what it is |
| 01:22.26 | T0mW | merely a smaller version of the last board & software |
| 01:22.36 | prpplague | ahh nice |
| 01:22.58 | T0mW | I couln' |
| 01:23.00 | T0mW | t |
| 01:23.02 | T0mW | bah |
| 01:23.36 | T0mW | I couldn't sell them on the ENC28J60 ethernet, they weren't interested in ethernet for this board. |
| 01:24.18 | prpplague | hehe |
| 01:24.41 | prpplague | started work on porting the driver to 2.6 |
| 01:24.58 | T0mW | I just shoveled a whole bunch of electronics onto the board, crammed stuff in. Then I let them tell me what to keep and discard. hehe |
| 01:25.16 | prpplague | hehe |
| 01:25.21 | T0mW | let them feel good about making some decisions |
| 01:25.28 | T0mW | Now |
| 01:25.41 | T0mW | I plan to finish the design before I ever quote it to them. |
| 01:25.57 | T0mW | this way, I know what it is costing me time-wise to build it. |
| 01:27.00 | T0mW | 107hours to work with them and get to the first prototype. 37 hours so far getting software systems ported onto it. |
| 01:27.35 | T0mW | It is an interesting problem, I'm using, essentially, the same source tree to build the second boards software: symlinks |
| 01:27.50 | T0mW | and, #ifdef BLAH |
| 01:27.55 | prpplague | ahh |
| 01:28.22 | T0mW | I'm trying to stay away from the #ifdef stuff though, that can be dangerous and hard to maintain. |
| 01:28.31 | prpplague | yep |
| 01:29.15 | prpplague | T0mW: oh i remember now, it was about voltage multiplication, but answered it by doing some addition research |
| 01:29.27 | T0mW | Where the designs overlap 99%, I symlink and maybe do a conditional for the IOPIN set / clear (e.g. IO0SET vs. IO1SET) |
| 01:29.36 | T0mW | diode string |
| 01:30.06 | T0mW | diode string + switching regulator, or just a boost switcher. |
| 01:30.15 | prpplague | http://sprite.student.utwente.nl/%7Ejeroen/projects/ledbl/ |
| 01:32.04 | T0mW | yeah, when a magnetic field collapses, it does so very rapidly, thereby inducing a large current spike in the inductor |
| 01:32.59 | T0mW | coffee time |
| 01:34.34 | T0mW | prpplague: did you want a cup too? |
| 01:36.39 | prpplague | yes please thanks |
| 01:36.42 | T0mW | prpplague: oh, I am using a mini-SD on this board. Took a bit of time buzzing out the miniSD --> SD adaptor to figure the pinouts. The drive is working so I must have gotten it right |
| 01:37.08 | prpplague | T0mW: http://pdf1.alldatasheet.co.kr/datasheet-pdf/view/74632/MICREL/MIC5219-3.3BMM.html |
| 01:37.37 | prpplague | T0mW: if i am reading the datasheet right, for me to be right at 3.3v, i need to have 4.3v in correct? |
| 01:37.45 | T0mW | I like micrel stuff |
| 01:38.37 | T0mW | I've a MIC5239 on one board |
| 01:38.51 | T0mW | I've a MIC5239-3.3BS on one board |
| 01:39.59 | prpplague | T0mW: just looking at something the boss did and trying to understand some of the limits |
| 01:40.16 | T0mW | depends on what the max current would be |
| 01:40.52 | prpplague | 100ma |
| 01:40.57 | T0mW | worst case, 500ma load, Vin would have to be a min of 3.9v |
| 01:41.21 | T0mW | about the same, approx 3.7v |
| 01:41.37 | prpplague | using the table on page 3? |
| 01:42.49 | prpplague | i hate the fact that usb is 5v |
| 01:43.18 | T0mW | page 3, I'm looking at "dropout voltage" 'vin-vout' |
| 01:43.44 | prpplague | right |
| 01:43.50 | prpplague | T0mW: gotcha |
| 01:44.45 | prpplague | 4.8v would do fine powering this device, problem is thats not enough to power the 5v nessary for the usb |
| 01:44.56 | T0mW | I never go with "typical" always go with "worst case". |
| 01:45.05 | prpplague | yea |
| 01:45.21 | prpplague | 500mA would give me 3.9v |
| 01:45.41 | prpplague | and if i had 4.8v at 2200mAh |
| 01:45.51 | T0mW | where are you coming up with 4.8v ? |
| 01:46.08 | prpplague | 4xAA rechargable |
| 01:46.12 | T0mW | ah |
| 01:46.13 | T0mW | ok |
| 01:46.18 | T0mW | so, boost it |
| 01:46.39 | T0mW | Linear tech, dual output buck / boost. |
| 01:47.04 | prpplague | using similiar method as the ccfl replacement? |
| 01:47.04 | T0mW | will run on 2 AA cells |
| 01:47.13 | prpplague | ?? |
| 01:47.14 | T0mW | phfft, ccfl takes a lot of current, don't it? |
| 01:47.26 | prpplague | T0mW: yea i mean that example url i gave you |
| 01:47.43 | prpplague | T0mW: lets put it this way, what would you use to do that? |
| 01:48.17 | T0mW | ok, you need: 3.3v @ 100ma, 5v @ ??ma |
| 01:48.20 | T0mW | what else? |
| 01:48.31 | prpplague | T0mW: 5v at 200ma iirc |
| 01:48.37 | T0mW | k |
| 01:48.44 | T0mW | and the high voltage? |
| 01:49.06 | prpplague | T0mW: i'll have to double check the usb specs but iirc the bus powered max is 200mA |
| 01:49.21 | prpplague | T0mW: i'm trying to keep with a lcd that handles that |
| 01:49.30 | T0mW | ok |
| 01:49.46 | prpplague | T0mW: worst case i'd need something like +20v for lcd contrast |
| 01:50.35 | prpplague | lets stick with the 5v at 200mA for now |
| 01:50.43 | prpplague | one issue at a time |
| 01:51.09 | T0mW | if you are running off a battery, you definately want to stay away from a series regulator: MIC5219 |
| 01:51.47 | T0mW | stay with a switcher for higher power utilization, switchers can deliver power longer as they don't waste it as heat |
| 01:52.21 | T0mW | series regulators run typically 30% effiency, 70% lost as heat |
| 01:52.26 | prpplague | hmm |
| 01:52.45 | prpplague | problem there is the mic5219 is part of an existing peace |
| 01:52.46 | T0mW | switchers typically run 70..85% efficiency |
| 01:53.04 | T0mW | double the usable runtime on a battery |
| 01:53.04 | prpplague | what part would you use instead? |
| 01:53.20 | prpplague | T0mW: yea, i'm wondering now about that |
| 01:53.45 | prpplague | T0mW: still we are looking at a max of 100mA on the 3.3v line |
| 01:53.54 | T0mW | LT3406 |
| 01:54.05 | prpplague | T0mW: similiar package size? |
| 01:54.30 | T0mW | http://www.linear.com/pc/productDetail.do?navId=H0,C1,C1003,C1042,C1032,C1063,P2208 |
| 01:55.10 | T0mW | that will run from 3.35v to 5.5v input and give up to 600ma @ 3.3v |
| 01:55.28 | T0mW | efficiency as high as 96% !! |
| 01:55.40 | prpplague | hmm uses a coil? |
| 01:56.04 | T0mW | yes, but it runs at 1.5mHz, means much smaller inductor |
| 01:56.23 | prpplague | hmm, well space is an issue |
| 01:56.24 | T0mW | prolly one of the 1812 type |
| 01:56.41 | T0mW | an 1812 is twice the size of an 0805 cap |
| 01:57.20 | prpplague | hehe thats giant |
| 01:57.29 | T0mW | as wide, and 4 times as long |
| 01:57.52 | prpplague | yea, there is no way we could fit that onboard |
| 01:57.55 | T0mW | zipit uses that regulator and the inductor is fairly small (smaller than 1812 inductor). |
| 01:58.33 | T0mW | prpplague: you won't need a heatsink with it, the MIC5219 would need some copper area for heatsink |
| 01:58.46 | prpplague | i guess i could just not supply power to the onboard regulator and use an external one |
| 01:59.49 | prpplague | woudln't that work? |
| 02:01.53 | T0mW | sure |
| 02:02.52 | T0mW | power supply takes some time to design it out. Not much off-the-shelf considering all the factors: size, current, multiple / single output, etc. |
| 02:03.36 | *** join/#edev EvilDevil_ (n=evildevi@p54A6FACC.dip.t-dialin.net) |
| 02:04.35 | T0mW | http://www.digikey.com/scripts/DkSearch/dksus.dll?Criteria?Ref=22502&Site=US&Cat=33948904 |
| 02:06.02 | prpplague | T0mW: yea |
| 02:06.03 | prpplague | T0mW: just thinking though |
| 02:06.13 | prpplague | T0mW: gonna discus with rusty about removing the 3.3v regulator from the main board |
| 02:07.02 | prpplague | T0mW: i just need something to make sure i'm getting exactly 3.3v |
| 02:07.23 | T0mW | zenor diode? |
| 02:07.28 | T0mW | heh |
| 02:07.52 | prpplague | T0mW: not sure, i'm just thinking out loud hehe |
| 02:09.15 | prpplague | T0mW: i keep thinking we should drop one of the spi controllers and replace it with a i2s |
| 02:09.31 | T0mW | i2s, or i2c ? |
| 02:09.45 | prpplague | i2s |
| 02:10.05 | T0mW | I haven't worked with i2s so I cannot comment |
| 02:10.27 | prpplague | i keep think someone is gonna want that do audio |
| 02:10.59 | T0mW | that's what I though it was, the audio thingy |
| 02:11.07 | prpplague | yea |
| 02:12.16 | prpplague | T0mW: only have 40 pins and we are squeezing alot into that |
| 02:12.57 | prpplague | you worked with any of the small lcd controllers? |
| 02:28.37 | T0mW | prpplague: no |
| 02:28.57 | T0mW | prpplague: I've only worked with the lcd controllers if on-chip |
| 02:29.18 | T0mW | not cost effective otherwise |
| 02:32.36 | prpplague | yea figured as much |
| 02:32.59 | prpplague | T0mW: what data size have you used? |
| 02:33.05 | prpplague | T0mW: 4, 8 , 16? |
| 02:33.11 | T0mW | 8 |
| 02:33.19 | prpplague | color or bw? |
| 02:33.22 | T0mW | bw |
| 02:33.43 | prpplague | hmm |
| 02:33.44 | T0mW | about 4 years ago |
| 02:33.53 | prpplague | still trying to decide |
| 02:34.05 | prpplague | oh well, time to get some zzz's |
| 02:34.11 | prpplague | T0mW: later thanks for the info |
| 02:55.15 | prpplague | T0mW: ping |
| 02:58.34 | T0mW | yup |
| 02:58.43 | T0mW | prpplague: wassup |
| 02:59.16 | prpplague | T0mW: hehe nm, answered myself again |
| 02:59.42 | prpplague | T0mW: http://www.sparkfun.com/commerce/images/LPC-H40.jpg |
| 02:59.51 | prpplague | T0mW: think that, but with an arm920t |
| 03:00.32 | T0mW | heh |
| 03:01.00 | T0mW | I wouldn't want to, seems a waste of an ARM9 to put it on a dip |
| 03:02.38 | T0mW | prpplague: I'll tell you, I am glad I didn't throw out these 1/8w wire-lead resistors. They are great for putting a pullup / pulldown onto an smd board! |
| 03:03.30 | prpplague | hehe |
| 03:04.25 | T0mW | I usually keep an order open at DigiKey where I "jot" down parts I need / use. Just putting some more of those resistors on that order form. |
| 03:28.00 | T0mW | prpplague: the "patient" is going to have a scar from the surgery, but it will live again. |
| 03:44.46 | MonMotha | hum, I may just have to finally get a new printer |
| 03:44.57 | MonMotha | getting tired of the ink carts for this old HP 550C drying out |
| 03:45.56 | T0mW | lol |
| 03:46.02 | T0mW | an HP550, eh? |
| 03:46.30 | MonMotha | yup. The printers that don't quit |
| 03:46.41 | T0mW | MonMotha: you might find something nicer to use by trolling the neighborhood on trash-day |
| 03:46.55 | T0mW | ;-) |
| 03:47.09 | MonMotha | not as reliable though |
| 03:47.25 | T0mW | I've had an 895C for a couple of years now. |
| 03:47.32 | T0mW | good printer |
| 03:47.39 | MonMotha | this thing is more than 10 years old |
| 03:47.45 | T0mW | I know... |
| 03:47.46 | MonMotha | still works fine. I just don't print often enough |
| 03:48.14 | T0mW | nod, the color cartridge eventually dries up with me from non-use |
| 03:48.25 | MonMotha | well, the problem I have is that it sits at home all school year |
| 03:48.41 | MonMotha | ok, that should be printing... |
| 03:48.43 | MonMotha | that's a new cart |
| 03:48.47 | T0mW | maybe take them out and put them in a baggie? |
| 03:49.09 | T0mW | or embalm them in saran-wrap? |
| 03:49.41 | MonMotha | hum, I think the printer that doesn't die may have finally died |
| 03:49.57 | MonMotha | I've been looking to get a cheap laser |
| 03:50.00 | MonMotha | just needs linux support |
| 03:51.10 | T0mW | hmm, I now need to build a simple block structured device to resemble a tiny msdos disk in Flash... |
| 03:51.33 | T0mW | only 8 / 12 in size |
| 03:51.38 | T0mW | 8K / 12K |
| 03:52.03 | T0mW | heh, FAT table will be one sector? |
| 03:52.08 | T0mW | :P |
| 03:53.38 | T0mW | might not have enough RAM to do that... |
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| 05:09.15 | jbevren | lol |
| 05:09.18 | jbevren | Side effects include respiratory depression, cardiovascular collapse, shock, convulsions, and death. |
| 05:09.20 | jbevren | nice |
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| 06:04.34 | davidc__ | jbevren: whats that re? programming on anything by ubicom? |
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| 13:45.28 | jbevren | http://www.surpluscomputers.com/store/main.aspx?p=ItemDetail&item=CES11138 |
| 13:45.29 | jbevren | curious |
| 13:46.29 | prpplague | hehe yea |
| 13:46.31 | prpplague | saw those |
| 13:58.49 | jbevren | replace em with an embedded board built to recieve mp3 packets over wireless... |
| 13:58.50 | jbevren | hehe |
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| 15:35.36 | jbevren | ok |
| 15:35.38 | jbevren | irritation |
| 15:36.00 | jbevren | I load snd-via82xxx to load the alsa audio driver |
| 15:36.03 | jbevren | I cant play via alsa |
| 15:36.09 | jbevren | but I can play via the OSS emulation layer |
| 15:36.14 | jbevren | the heck? |
| 15:36.41 | jbevren | tellie:/proc/asound# alsamixer |
| 15:36.41 | jbevren | alsamixer: function snd_ctl_open failed for default: No such device |
| 15:36.47 | jbevren | htats strange, its in the cards and devices list |
| 15:46.01 | jbevren | <PROTECTED> |
| 15:46.03 | jbevren | grumble |
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| 19:22.17 | prpplague | wheres tom when ya need him |
| 19:23.55 | jbevren | hiding stealthily |
| 19:28.01 | prpplague | hmm, camera stuff seems interesting |
| 19:28.06 | prpplague | almost a reverse lcd |
| 19:28.13 | jbevren | oh, the ccd stuff? |
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| 19:54.31 | prpplague | jbevren: yea looking at one on sparkfun |
| 19:55.51 | jbevren | ahh |
| 19:56.02 | jbevren | I have a linear scan mech from a printer/fax/copier |
| 19:57.29 | jbevren | nice |
| 19:57.31 | jbevren | er. |
| 20:00.08 | prpplague | jbevren: i'm totally confused on how to determin when a complete frame has been scanned |
| 20:13.50 | jbevren | dont you count bytes? |
| 20:14.17 | CosmicPenguin | or you'll get an interrupt |
| 20:19.27 | prpplague | i could count but there should be a hardware method |
| 20:19.41 | prpplague | looks like the VSYNC is used for that |
| 20:19.54 | CosmicPenguin | I'm not sure what your camera interface looks like, but if it is fairly modern, there should be a frame detect somewhere |
| 20:20.01 | prpplague | seems different cmos camera specs call it different things |
| 20:20.20 | prpplague | CosmicPenguin: yea, that appears to be the VSYNC line |
| 20:20.45 | CosmicPenguin | yep - there you go - you're golden |
| 20:20.56 | prpplague | CosmicPenguin: vsync starts the frame and ends it, hsync does a data group, and VCLK does the valid data |
| 20:21.30 | prpplague | i hate it when manufacturers don't use the same words for the same things |
| 20:30.10 | prpplague | hmm this should be fairly simple |
| 20:31.13 | prpplague | you could almost do this from user land bit banging gpio |
| 20:31.39 | CosmicPenguin | certainly |
| 20:31.44 | CosmicPenguin | cameras are pretty easy |
| 20:31.52 | CosmicPenguin | unless you get into the colorspace conversion and stuff |
| 20:31.56 | prpplague | easy once you are familiar hehe |
| 20:33.38 | prpplague | CosmicPenguin: this module is color |
| 20:33.57 | prpplague | CosmicPenguin: shouldn't be that big of a deal though |
| 20:34.03 | prpplague | CosmicPenguin: just extra data, hehe |
| 20:57.31 | prpplague | odd i can't seem to find a pcb drawing for a .4mm pitch sop package |
| 20:57.38 | prpplague | all seem to be either .5 or .65 |
| 21:33.40 | jbevren | hm |
| 21:33.43 | jbevren | kernel bug in dquot.c:424 |
| 21:34.00 | jbevren | how would the quotas be in a state where theyre off but the kernel is unaware |
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