| 00:00.18 | g1powermac | has about $20 in his pocket ;-) |
| 00:01.49 | solar | And matched with this charge controler? http://www.infinigi.com/morningstar-ps15m-prostar-15-charge-controller-meter-p-823.html And this |
| 00:02.04 | solar | this = searching. brb |
| 00:02.44 | g1powermac | oh nice, what are you powering with solar panels? |
| 00:03.00 | solar | http://www.batterystuff.com/batteries/rv-marine/agm/8A8D.html |
| 00:03.37 | solar | g1powermac_PB: hopefully some lighting, home stereo, laptop, and any/every wall-wort |
| 00:03.44 | g1powermac | nice |
| 00:03.48 | g1powermac | lemme know if you get this working |
| 00:03.59 | g1powermac | I'd be interested in building something like that myself |
| 00:04.00 | solar | i should. |
| 00:04.16 | *** join/#edev Redhatter (n=vk4msl@2001:388:f000:0:0:0:0:279) |
| 00:04.29 | solar | last week woot.com had a sale on 5W panels. So I ordered 18 of them |
| 00:04.47 | g1powermac | put some solar panels on the roof of my car?remote power for all without powering the engine :-) |
| 00:05.42 | g1powermac | if only I had a hybrid though, then I could power the hybrid's batteries right from the solar panels |
| 00:06.00 | solar | need much bigger panels for that. |
| 00:06.07 | solar | like a few BUSes |
| 00:06.22 | g1powermac | very true, but it could still charge the batteries when the car is just sitting there |
| 00:06.34 | solar | yeah. |
| 00:06.58 | solar | hydo might be a better option however. It could sit there all day making power. You just gotta fill up and go. |
| 00:07.02 | g1powermac | but oh well, at least the car I have gets better mpg than most hybrids |
| 00:07.05 | Redhatter | We're trying to build a solar harvester... |
| 00:07.19 | solar | Redhatter: where? |
| 00:07.52 | Redhatter | (Well, technically an electric harvester... but its got solar panels to charge the batteries when it's not out harvesting crops) |
| 00:08.03 | Redhatter | http://www.smartwheel.com.au <-- solar, That mob (warning: site (ab)uses flash) |
| 00:08.06 | g1powermac | Redhatter, oh nice |
| 00:08.31 | Redhatter | The bit I've worked on is the driver controls, which is based around a MSP430F149 chip. |
| 00:09.10 | g1powermac | should build a small panel system to keep his camcorder's battery charged |
| 00:09.33 | g1powermac | I just don't get enough time before it dies |
| 00:09.48 | *** join/#edev landley (n=landley@cpe-70-116-30-223.austin.res.rr.com) |
| 00:09.48 | *** mode/#edev [+o landley] by ChanServ |
| 00:10.30 | g1powermac | especially when I'm testing this: http://g1powermac.com/2008/10/16/35mm-dof-adapter-parts%E2%80%A6/ |
| 00:11.31 | solar | Redhatter: looks like quite a fun/rewarding project |
| 00:14.46 | Redhatter | It has had its challenges. |
| 00:15.14 | Redhatter | Originally the MCU was using a MSP430F135... which has 512 bytes of RAM, and 16KB flash. The newer one has 2KB RAM and 60KB flash. |
| 00:15.45 | Redhatter | Things are still a little glitchy -- we really need a better MCU... but it's at the stage of almost moving. |
| 00:19.05 | ds2 | solar: it doesn't say the duty cycle it is speced for |
| 00:23.59 | *** join/#edev pea (n=pea@75.58.4.163) |
| 00:52.20 | solar | ds2: The duty cycle is how long it takes to make a square wave? |
| 01:12.15 | ds2 | solar: no, more of how long can you use it at any one time |
| 01:12.47 | ds2 | so for a light bulb that gets turned on by a timer at 1800, and off at 0600, the duty cycle is 50% |
| 01:30.43 | solar | well I'm aiming for ~6hrs of use per evening |
| 01:31.19 | ds2 | at full rated power? |
| 01:31.30 | solar | nope. |
| 01:31.34 | *** join/#edev kergoth (n=kergoth@ip72-201-11-30.ph.ph.cox.net) |
| 01:32.23 | solar | laptap is pulling about 40W/78Peak and the stereo about another 50W/121WPeak. |
| 01:33.40 | solar | I'll probably add a 12V CFL's around another 7W-15W |
| 01:34.07 | ds2 | who's selling 12V CFL's cheap? |
| 01:34.20 | solar | I think solarsilicon. |
| 01:34.32 | solar | gimme a few to look at my dozens of bookmarks |
| 01:35.29 | ds2 | westmarine does but they are not cheap |
| 01:36.49 | solar | http://home.altenergystore.com/ looks to have all around fair pricing on them |
| 01:37.24 | ds2 | I been thinking it may be easier to get some 1W LEDs and use those |
| 01:38.03 | solar | Likewise. prpplague just sent me a few bags of them |
| 01:38.43 | solar | guess with enough of them you wont even need any resistors |
| 01:38.52 | ds2 | bags of 1w leds??????? |
| 01:39.17 | *** join/#edev ccjoe (n=joeg@75-169-7-104.slkc.qwest.net) |
| 01:39.22 | solar | oh no not 1w. just a bag of super bright white leds. No idea what the rating on them is actually |
| 01:39.55 | ds2 | having seen the 1W ones in action, even the super brights look dim |
| 01:40.09 | *** join/#edev ccjoe (n=joeg@75-169-7-104.slkc.qwest.net) |
| 01:40.32 | ds2 | problem I have is those things drop about 3V... on a 12V system using a simple resistor, I have to burn up about 3W :( |
| 01:41.22 | ds2 | if you are willing to deal with odd size flourescents, home depot does carry some 12V lights |
| 01:42.36 | solar | I'm using a 120V 11W CFL for my lighting needs at night cept when cooking/kitchen/other. |
| 01:44.36 | ds2 | thanks to PG&E and other less noble reasons, those are cheap |
| 01:47.00 | ds2 | always wondered if there is a simply way of mod'ing a cheap CFL to run on 12V |
| 01:47.01 | solar | new Ex GF got them from PG&E for free at the westcoastgreen show a few weeks ago |
| 01:47.41 | ds2 | the key under doormat one? :) |
| 01:47.51 | MonMotha | ds2: depends. Some of them do just use e.g. a capacitor fed rectifier. You can just bypass that and apply the proper DC voltage |
| 01:48.16 | solar | ds2: yep. The EX :) |
| 01:48.29 | ds2 | MonMotha: you think the switcher will still be able to boost enough to ignite the tube? |
| 01:48.57 | MonMotha | ds2: hence the "apply proper DC voltage", which could be ~170V :) |
| 01:49.08 | ds2 | hahahahaahahhaah |
| 01:49.22 | MonMotha | I've not torn down many CFLs |
| 01:49.28 | MonMotha | I just use 'em |
| 01:50.10 | ds2 | that's actually not too bad... at 170V, it is under 10mA; and at 12V, it is around an amp... common MOSFETs can do the boost to 170V |
| 01:50.17 | MonMotha | ds2: regarding high brightness LEDs, Luxeon does make some sorta diffused 5W models. They're about 5V @ 1A. Use a switch mode constant current source to drive them. |
| 01:50.26 | solar | ds2: looks like the local walgreens carry the 1W LED in packs of 2 for $4 |
| 01:50.44 | ds2 | MonMotha: who makes said switched mode CC source? |
| 01:50.49 | MonMotha | they're bright enough to cause retinal damage if looked at for extended periods of time |
| 01:50.59 | MonMotha | ds2: an off the shelf part? dunno. Several easy ways to build them. |
| 01:51.03 | ds2 | solar: really?I need to goto walgreens more often |
| 01:51.15 | MonMotha | I know ON and I think LT have parts dedicated to LED driving |
| 01:51.43 | ds2 | MonMotha: any pointers to a sample circuit? I can't visualize how a CC one would work; a CV one in buck mode I sort of understand |
| 01:52.28 | solar | ds2: http://tinyurl.com/44kjkz |
| 01:52.33 | MonMotha | grab the ON NCP3066 datasheet |
| 01:52.48 | MonMotha | you just modify the feedback so that it regulates on current rather than voltage. |
| 01:53.16 | ds2 | MonMotha: so a sense resistor is needed? |
| 01:53.21 | MonMotha | e.g. using a current sense resistor to develop the feedback rather than a voltage divider |
| 01:53.31 | MonMotha | yes, that's the most common way to do it, though there are also coupled inductor techniques |
| 01:53.55 | ds2 | Solar: nice find. that's cheap enough to tear down for other purposes |
| 01:53.57 | MonMotha | they tend to keep the feedback voltage low, so you don't burn much in the sense resistor |
| 01:54.11 | MonMotha | that ON part has a 235mV feedback threshold |
| 01:54.14 | ds2 | MonMotha: you seem to always make me wish I had paid more attention in the power electronics class ;) |
| 01:54.40 | MonMotha | ds2: I'd say about 35% of my job involves power conversion |
| 01:54.51 | solar | I work downtown right next to wallgreens. So I'll try to pick up a few packs of them tmw and let ya know what I think if ya want. |
| 01:55.00 | MonMotha | the reality is that the rest of digital circuit engineering at low to moderate speeds is pretty much "hook things up in the obvious way" |
| 01:55.03 | ds2 | MonMotha: where did you pickup all the power knowledge? |
| 01:55.27 | MonMotha | ds2: out of necessity, I guess. I'll be putting a system together, have a power issue, and I'll go look up how to solve it |
| 01:55.37 | ds2 | solar: do you plan to rip them apart or ? |
| 01:55.41 | MonMotha | I still have the first board I built using a SMPS |
| 01:55.48 | MonMotha | heck, I use it frequently |
| 01:55.53 | ds2 | MonMotha: so you learned from appnotes/datasheets? |
| 01:56.16 | ds2 | a nice and understandable power class seems to be rather rare |
| 01:56.36 | MonMotha | ds2: app notes, data sheets, conversations with FAEs, and I did take a power electronics class, though we focused mostly on higher power apps |
| 01:56.48 | solar | ds2: yeah I'd have to. I don't have any candle sticks to hold a led like that. |
| 01:57.01 | MonMotha | The guy who taught that class was a utility oriented guy. He enjoys crunching grid stability problems. |
| 01:57.09 | MonMotha | IIRC, he predicted the big blackout from a few years back |
| 01:57.21 | ds2 | solar: if you want to keep them in 120V configuration, the dollar store nightlights should accept it or provide a socket |
| 01:58.09 | ds2 | MonMotha: the higher power stuff put everyone to sleep in my class. the instructor was researching electric cars and I guess 3ph was important to him |
| 01:58.25 | MonMotha | ds2: heh, I'm actually attempting to build an electric car :) |
| 01:58.31 | MonMotha | a "mere" 25HP |
| 01:58.46 | MonMotha | though 25HP off the line is still fairly peppy; you have just limited max speed (~50-55MPH) |
| 01:58.48 | ds2 | you will be using bus BARS not wires, right? ;) |
| 01:59.01 | MonMotha | well, for the battery side, likley yes |
| 01:59.17 | ds2 | even at 120V, 25HP is still a lot of amps |
| 01:59.30 | MonMotha | about 150-200A from the battery stack, depending on voltage. One option is to stack them to like 480V, but then you have safety and charging issues. |
| 01:59.45 | MonMotha | well, the motor is a 240 or 480V 3ph motor |
| 01:59.48 | ds2 | roughly 200A or so assuming very high motor efficiencies |
| 01:59.49 | solar | MonMotha: documenting the electric car building journey anywhere online pics/vids/notes/etc.. ? |
| 02:00.03 | MonMotha | solar: I haven't done much yet. I probably will do so |
| 02:00.15 | MonMotha | I still need to find a car with a dead engine that's otherwise in decent shape and local |
| 02:00.17 | MonMotha | that's no small task |
| 02:00.30 | ds2 | selling the blown MOSFETS on Ebay to defray costs? |
| 02:00.36 | MonMotha | and I need to work out some of the mechanical stuff |
| 02:00.46 | MonMotha | ds2: MOSFETs? hah...more like IGBTs at those power levles |
| 02:00.51 | ds2 | oh you are going the conversion route, not a from scratch route? |
| 02:01.10 | MonMotha | ds2: well, I'm building all the electronics, but I was planning on converting an existing vehicle, yes |
| 02:01.13 | MonMotha | probably something like a rabbit |
| 02:01.27 | MonMotha | maybe an old Geo |
| 02:01.36 | ds2 | a better prius then a prius? ;) |
| 02:02.14 | ds2 | did you follow the prius rip apart at ESC a few years (2?) ago? They published it in one of the rags |
| 02:02.57 | MonMotha | I did see some of that, yes |
| 02:03.06 | MonMotha | and no, not as good as a Prius, but hopefully cheaper and way cooler :) |
| 02:03.24 | MonMotha | I've got the motor. Caught a great deal on ebay, even though I actually never bid |
| 02:03.41 | ds2 | how heavy is a 25HP motor? |
| 02:04.02 | MonMotha | local guy was selling the thing, and I forgot to bid on it. I had gone to look at it though, so I called him back up and explained that I just forgot to bid, and I'd take it if the winner backed out. Well, the winner didn't realize that it was 3ph, so I got it :) |
| 02:04.18 | MonMotha | ds2: Damn. Heavy. |
| 02:04.31 | MonMotha | 3 people is barely sufficient to lift it |
| 02:04.42 | MonMotha | I'd guess ~250lbs |
| 02:04.50 | ds2 | 3 people.. not bad. thought you might had to get a rigger to move it |
| 02:04.50 | MonMotha | maybe topping 300 |
| 02:04.55 | solar | MonMotha: with that motor. Perhaps http://www.zeromotorcycles.com/ might be more suited |
| 02:05.00 | MonMotha | it's only 25HP :) |
| 02:05.18 | MonMotha | solar: well, it's a bit big for a motorcycle, though a trike might work well |
| 02:05.32 | MonMotha | solar: 25HP doesn't seem like a lot, but you get that full 25HP at like 800RPM |
| 02:06.01 | MonMotha | electric motors are way more torque happy than ICEs |
| 02:06.07 | ds2 | 25HP is around 20KW! |
| 02:06.22 | MonMotha | ds2: yes |
| 02:06.24 | ds2 | the real work is in getting a proper VFD working on it |
| 02:06.30 | MonMotha | it's a surprisingly large amount of power |
| 02:06.35 | MonMotha | ds2: I was going to build the VFD |
| 02:06.59 | MonMotha | I've actually done the gating control before for a slightly different application (3ph controlled rectifier) |
| 02:07.10 | MonMotha | I was pulsing triacs, but it's a similar idea |
| 02:07.21 | MonMotha | just need to get the SPWM or similar in there |
| 02:07.25 | ds2 | MonMotha: heard the cost of building a VFD is measured in number of switching devices smoked (I dabble in machining so I hear about people trying to get in cheap DIY VFD's) |
| 02:07.29 | MonMotha | harmonic content of square waves is pretty sucky |
| 02:07.49 | MonMotha | ds2: pretty much. The IGBTs for this are about $10/ea in low qty. |
| 02:08.03 | ds2 | how do you plan to handle the current dump in stop mode? regen breaking? |
| 02:08.16 | MonMotha | issue is that if you screw the control up, you crowbar the HVDC rails |
| 02:08.25 | MonMotha | that tends to result in smoked switch devices |
| 02:08.46 | MonMotha | ds2: I was just going to use the existing brakes. If you turn off the VFD output, the motor will coast. |
| 02:09.28 | MonMotha | a possible improvement would be to use regen braking, but then you need isolation since you're closing the loop in a way that results in various rails getting connected to various incompatible rails. That's a really big forward converter. |
| 02:09.35 | ds2 | MonMotha: you still need to dump the energy somewhere... big (2-3HP) CNC milling machines have huge ballast resistors for this... one mfg (Haas) used stove elements on some of their designs |
| 02:10.02 | MonMotha | you're dumping the energy of the motor itself into the transmission and into the brakes |
| 02:10.22 | MonMotha | now, if you leave it in neutral or hold the clutch, the motor will coast, which may not be what you want |
| 02:10.30 | MonMotha | a resistor bank could work there, yes |
| 02:11.50 | ds2 | use that to replace the heating core ;) |
| 02:11.57 | MonMotha | certainly a possibility |
| 02:12.01 | MonMotha | since you'd need something |
| 02:12.16 | MonMotha | I had thought about using a small heat pump, since you get A/C then, too |
| 02:12.25 | ds2 | a electric yugo might be amusing to see |
| 02:14.27 | MonMotha | an electric *insert small ICE based car here* in generally might be amusing |
| 02:14.36 | MonMotha | and in my jurisdiction, generally easier to title/register |
| 02:14.43 | MonMotha | easier than a scratch built vehicle, that is |
| 02:15.09 | ds2 | small? i.e. model airplane ICE? |
| 02:15.41 | MonMotha | small but still passenger |
| 02:15.52 | MonMotha | an electric smart car would be awesome, but impossible to justify |
| 02:16.07 | MonMotha | though at that point it's almost a golf cart |
| 02:16.20 | ds2 | so a normal engine, can't be a lawn mower engine either? |
| 02:16.51 | MonMotha | not many off the shell passenger vehicles using lawn mower engines |
| 02:16.55 | MonMotha | *shelf |
| 02:17.13 | ds2 | oh I see what you are trying to solve |
| 02:17.16 | MonMotha | I'm also wanting to build a steam turbine powered car some time |
| 02:17.21 | MonMotha | just because it would be awesome |
| 02:17.35 | MonMotha | (and totally impractical) |
| 02:19.26 | MonMotha | ds2: in Indiana, modified vehicles generally can be registered/titled fairly easily. May require an inspection. Scratch built vehicles are a sort of pain in the butt for anything but trailers. |
| 02:19.38 | MonMotha | that varies heavily by state |
| 02:20.08 | ds2 | MonMotha: and removal of an essential part of a vehicle does not count as a mere modification, I take it? |
| 02:20.50 | MonMotha | I haven't read anywhere that it causes major problems. They are mostly concerned with safety and other road worthy-ness |
| 02:20.58 | MonMotha | and, in a couple counties, emissions |
| 02:21.12 | MonMotha | (they don't care about emissions in my county) |
| 02:21.32 | ds2 | you must be away from King Daley's domain? |
| 02:21.38 | MonMotha | indeed |
| 02:21.47 | MonMotha | those are the couple counties :) |
| 02:21.57 | MonMotha | I'm solidly over on the other side of the state |
| 02:22.02 | MonMotha | Fort Wayne area |
| 02:22.23 | ds2 | so is there really more then corn in indiana? ;) |
| 02:22.50 | MonMotha | indeed |
| 02:23.09 | ds2 | :) they were running that ad so often |
| 02:23.23 | MonMotha | though outside of about 5-10 major cities, the other stuff is mostly soybeans :) |
| 02:23.51 | ds2 | i have never seen anything other then corn along the turnpike so... |
| 02:24.03 | MonMotha | oh, the Indiana toll road? |
| 02:24.07 | ds2 | yep |
| 02:24.12 | MonMotha | (I don't think it's actually called a turnpike) |
| 02:24.24 | MonMotha | we all just call it "The toll road" since it's the only one in the state |
| 02:24.27 | ds2 | maybe ohio or penn calls it such |
| 02:24.34 | MonMotha | yeah, ohio and penn both do I think |
| 02:24.42 | MonMotha | and yes, there's not much along I-80/90 |
| 02:24.45 | ds2 | used to live in chicago and down I90, it is pay at every border |
| 02:25.27 | MonMotha | Indianapolis, Fort Wayne, Evansville, Louisville area have some actual civilization |
| 02:26.01 | MonMotha | there's also Richmond, Terre Haute, Kokomo, Bloomington, Mishawaka |
| 02:26.08 | MonMotha | but other than all that, corn and soybeans :) |
| 02:26.20 | ds2 | ANOTHER bloomington? |
| 02:26.37 | MonMotha | Bloomington, IN is home to Indiana University. Perhaps you've heard of it? |
| 02:26.54 | MonMotha | it's a true college town, but fairly big since the school is huge |
| 02:26.58 | ds2 | no, State Farm is HQ'ed in Bloomington, IL, IIRC |
| 02:27.05 | MonMotha | yes, I know them |
| 02:27.20 | MonMotha | but there's also a Bloomington, IN |
| 02:27.37 | ds2 | just surprise to hear of another one in relative proximity |
| 02:28.00 | MonMotha | I guess there's also Lafayette, but it seems to be even more of a college town than Bloomington (Purdue is in West Lafayette) |
| 02:28.18 | MonMotha | there are a surprising number of very good schools in Indiana |
| 02:28.41 | MonMotha | Educated people is the major export of the state. The state is sadly unable to retain many of them. |
| 02:29.16 | ds2 | Lafayette I have heard of as a college town |
| 02:29.22 | MonMotha | it is |
| 02:29.35 | MonMotha | it's about halfway between Indianapolis and Chicagoland on I-65 |
| 02:29.48 | ds2 | educated folks don't want to farm or work in steel mills (if there are those anymore) |
| 02:30.24 | MonMotha | surprisingly few steel mills left |
| 02:30.39 | MonMotha | and Indianapolis actually has a fair bit of biotech/medicine |
| 02:30.47 | MonMotha | Eli Lilly is headquartered there |
| 02:31.02 | ds2 | only think I associate with them is the brickyard |
| 02:31.48 | MonMotha | I went to Japan and told people I was from Indianapolis, Indiana, USA. When they didn't misunderstand as India, it was always something about auto racing. |
| 02:32.08 | solar | ds2: found the link I was looking for a while ago on the CFL. http://www.solarpowergetics.com/servlet/the-290/12V-DC-Compact-Flourescent/Detail |
| 02:32.11 | ds2 | hehe |
| 02:32.35 | MonMotha | ds2: Indianapolis will be the site of the superbowl in 2012 |
| 02:34.02 | ds2 | so will the betting be on the game or on how many people make it there w/o flying off the road due to ice? |
| 02:34.11 | ds2 | solar: much better price then west marine |
| 02:34.22 | MonMotha | ds2: good question |
| 02:34.39 | MonMotha | the street people do a decent job, but they're not as good as, say, Boston |
| 02:35.06 | ds2 | that's going to be the colt's home field? |
| 02:37.23 | MonMotha | Lucas Oil is currently the home venue of the Colts. They finally won there last Sunday :) |
| 02:37.43 | MonMotha | they just started playing there this year. They played at the RCA Dome (formerly the Hoosier Dome) last year. |
| 02:40.46 | MonMotha | and yes, I am a Colts fan |
| 02:41.10 | MonMotha | (Fort Wayne seems split about 65/35 Colts/Bears fans - it is about equidistant from Indianapolis and Chicago) |
| 02:41.36 | ds2 | maybe a dislike of spitting? ;) |
| 02:41.37 | MonMotha | I'm from Indianapolis, though, so that isn't surprising |
| 02:42.11 | ds2 | unfortunately, the bears fan out here are not THE Bears fans :( (UCB calls their team the bears) |
| 02:42.38 | *** join/#edev sunrunner20 (n=jamesdoe@pool-71-164-162-23.dllstx.fios.verizon.net) |
| 02:46.08 | MonMotha | I have a fair amount of respect for the bears. They are one of the more behaved NFL teams (which is one reason I love the Colts) |
| 02:46.16 | MonMotha | I think a fair bit of that comes from their coach |
| 02:47.07 | ds2 | behaved? a coach spitting on reports is well behaved? Hmmm |
| 02:47.33 | MonMotha | When did that occur? |
| 02:47.44 | MonMotha | In the past, he's been pretty good. |
| 02:50.25 | ds2 | early 90's |
| 02:50.30 | ds2 | during Ditka's era |
| 02:50.37 | MonMotha | oh, well, I'm talking recently |
| 02:50.45 | MonMotha | all sorts of that stuff can change in 5-10 years |
| 02:50.46 | ds2 | ah |
| 02:51.03 | MonMotha | I dislike the current Indiana Pacers, for example (well, at least last season's) |
| 02:51.37 | solar | 2 cents welcome on http://www.infinigi.com/invertek-dai0300l122a-sine-wave-inverter-12v-300w-p-281.html |
| 02:52.24 | MonMotha | solar: what's the modulation method? |
| 02:52.32 | MonMotha | it doesn't say, though 4% THD is respectable |
| 02:53.12 | MonMotha | I'm also not a fan of transformer based inverters, but they're certainly common and work OK |
| 02:54.27 | solar | pure sine waves tend to be needed by old tube radios? A ~4 year old kenwood should be happy? |
| 02:56.15 | MonMotha | yes, tube radios would usually prefer a good quality AC input |
| 02:56.39 | MonMotha | though you can sometimes mod them to run on DC, but you need a bunch of rails |
| 02:56.59 | MonMotha | those older designs tended to just add whatever rails they needed since it's not hard to add another tap or winding to a transformer |
| 02:58.38 | *** join/#edev redblue (i=star@ppp092.109-253-207.mtl.mt.videotron.ca) |
| 03:02.34 | solar | so in other words. pure sine wave is not a big deal? |
| 03:30.24 | MonMotha | solar: well, if you're going to use the existing transformer and feed it any form of AC, you are likely to hear any harmonics you feed it |
| 03:30.37 | MonMotha | however, you can sometimes mod them to accept DC, albeit at strange voltages |
| 03:38.51 | solar | I ended up ordering the xantrex one |
| 03:41.21 | solar | hrmm wonder how (in)efficient a gutted old 700W UPS would serve |
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| 07:14.19 | [AD]Turbo | yo |
| 07:17.36 | methril | yo |
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| 16:47.54 | prpplague | ho hoh um |
| 16:48.07 | prpplague | this audio stuff is hard to debug |
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| 17:46.09 | prpplague | hmm, can't seem to figure this out, get repeated data at the beginning and end of playback |
| 18:09.55 | g1powermac | huh, the mobo in the new macbook pro looks to be one of the most difficult boards to route with that chip arrangement: http://static4.ifixit.com/igi/n2TrniSjqkvPPsuc.large |
| 18:25.34 | prpplague | darn darn darn |
| 18:25.44 | prpplague | i just can't seem to find this problem |
| 18:25.52 | chouimat|work | hates lawyers |
| 18:27.27 | g1powermac | chouimat|work, don't we all |
| 18:28.25 | chouimat|work | g1powermac: I just been ask to feel a spreadsheet with the information for the 500 packages installed on the device ... (new contract/project) |
| 18:28.42 | g1powermac | oh lovely |
| 18:28.56 | chouimat|work | g1powermac: for pack in `rpm -qa`; do rpm -qil $pack >>content; done <--- do the work :) |
| 18:29.06 | g1powermac | that works :-) |
| 18:29.44 | g1powermac | I was going to suggest something like that, but it would have been with debians package system since I know that one the best :-) |
| 18:32.07 | chouimat|work | g1powermac: and seems I will need to run sloccount on the complete source base too |
| 18:32.13 | chouimat|work | :( |
| 18:32.20 | g1powermac | ahh |
| 18:32.53 | g1powermac | chouimat|work, here's something to make you feel better: http://www.whipy.demon.co.uk/swidniw.png :-) |
| 18:34.03 | chouimat|work | lol sold in emerging market such Brazil, India and Detroit |
| 18:48.57 | prpplague | anyone know a good opensource page for some audio clips like beeps and such? |
| 18:50.21 | agaffney | opensource? you need something you can redistribute? |
| 18:50.49 | prpplague | yea |
| 18:51.06 | CosmicPenguin | whatever sounds are distributed with gnome or kde shoudl suffice? |
| 18:51.29 | prpplague | CosmicPenguin: yea, none of those seem to match what i needed |
| 18:51.34 | prpplague | looks again |
| 18:51.39 | prpplague | s/looks/listens |
| 18:57.09 | prpplague | its really weird, it is as though the first and last dma transfers are duplicated |
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| 19:20.21 | RobotGuy | Greetings, Programs. :D |
| 19:22.09 | kergoth | hmm |
| 19:22.16 | kergoth | i used to know a sound clip site for free stuff |
| 19:22.20 | kergoth | tries to make his memory function |
| 19:26.33 | solar | pda sounds. I'm sure there are dozens that can be pulled out of existing devices. |
| 19:27.40 | RobotGuy | is finally back online from home again.. :D |
| 19:28.49 | prpplague | solar: darn first dma xfer and last one seem to be duplicated for some reason |
| 19:28.56 | prpplague | its driving me nuts |
| 19:29.07 | prpplague | i've spent two days debugging this |
| 19:32.47 | solar | being that you work will give you the choice of 'get it working or get it working' I think you will win in the end. |
| 19:33.22 | solar | wishes ya good luck however. |
| 19:41.34 | prpplague | solar: how are things going on your end with the 8050? |
| 19:57.09 | solar | ok. got a few gpe things that are bugging me in the cross compile tree. but those should not be that bad to work out |
| 19:57.27 | solar | I'd like to help you figure something with the customs things so I can use my helper guy. |
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| 20:21.40 | CosmicPenguin | prpplague: http://opencircuits.com/Linuxstamp |
| 20:22.43 | prpplague | CosmicPenguin: yea the boss was originally going to call the hammer the linux stamp, but we got a nasty grahm from parallax |
| 20:23.07 | CosmicPenguin | ahh - |
| 20:23.15 | CosmicPenguin | I'm a big fan of the basic stamp |
| 20:27.30 | prpplague | well...... |
| 20:27.41 | prpplague | looks like i have a couple of problems not just one |
| 20:27.50 | prpplague | i hate compond bug |
| 20:27.51 | prpplague | s |
| 20:31.38 | prpplague | yep definetly some sort of dma issue, i'm getting incorrect dma pointers at the begging and end of playback |
| 20:33.09 | prpplague | CosmicPenguin: http://www.pastebin.ca/1228739 |
| 20:33.21 | prpplague | CosmicPenguin: 0x37d80000 is the base of the ring buffer |
| 20:33.46 | prpplague | CosmicPenguin: so that last dma transfer points back into the ring buffer |
| 20:37.28 | CosmicPenguin | how come? |
| 20:37.34 | CosmicPenguin | are you not setting your end of table bit? |
| 20:45.45 | prpplague | CosmicPenguin: this is a provided driver from wolfson, so i'm having to track down the issue |
| 20:46.42 | chouimat|work | bangs his head on desk |
| 20:49.08 | solar | nice new xorg will support tslib better vs just evtouch. http://pengutronix.de/software/xf86-input-tslib/index_en.html |
| 20:58.49 | prpplague | yep definetly something in the s3c24xx-pcm.c |
| 20:59.06 | prpplague | wish i had something to compare this to |
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| 21:35.09 | MonMotha | wow...the way the gas company rounds off my bill, I basicaly get billed in increments of $200 |
| 21:35.17 | MonMotha | that seems a little coarse... |
| 21:36.17 | kergoth | .. |
| 21:36.53 | prpplague | CosmicPenguin: should the dma playback buffer always start at the source address and a value of zero? |
| 21:37.29 | CosmicPenguin | source being the playback bits? |
| 21:38.17 | prpplague | yea |
| 21:39.43 | prpplague | its like the beginning of the playback the address is off by 0x400 , so the ending is off too |
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| 21:40.34 | CosmicPenguin | it probably needs to be aligned |
| 21:40.40 | CosmicPenguin | most prd tables work better that way |
| 21:41.19 | prpplague | CosmicPenguin: yea its almost as if it thinks that some of the data has already been processed |
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| 21:41.53 | prpplague | i wish i had something to compare it to |
| 21:42.06 | CosmicPenguin | That could be - is your bus master stopped before you load the prd? |
| 21:42.34 | prpplague | not sure, i'll have to dig and check |
| 21:50.48 | prpplague | CosmicPenguin: hmm, looks like its trying to pre-load the que before the buffer is ready |
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| 21:56.02 | ds2 | nathanm: stock top of l-o or with the koen list of patches? |
| 21:56.04 | ds2 | bah |
| 22:03.04 | prpplague | hmm, seems to me the ring buffer should always start out at the base address |
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