#avr | Logs for 2012-12-20

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[01:40:55] <slidercrank> from the datasheet: "The only external hardware needed to implement the bus is a single pull-up resistor for each of the TWI bus lines" How to determine what values should resistors have?
[01:43:06] <jadew> slidercrank, it depends on the bus capacitance
[01:43:12] <jadew> but a 10k one is usual
[01:43:36] <jadew> if you have a scope and you can tell that the line is not getting back high fast enough, you can lower it to 5k
[01:44:18] <slidercrank> jadew, thank you
[01:44:26] <jadew> np
[04:41:10] <Sefid_par> I wanted to program my microcontroller using uisp and parallel port by dapa
[04:41:25] <Sefid_par> using this command: uisp -dprog=dapa -dlpt=0x378
[04:41:42] <Sefid_par> But I got error: Failed to get direct I/O port access.
[04:41:46] <Sefid_par> What does it mean?
[04:41:52] <Sefid_par> I used ubuntu
[04:58:27] <megal0maniac> Sefid_par: Run it using sudo
[04:58:53] <megal0maniac> Or add yourself to the "lp" group
[04:59:36] <megal0maniac> Google is not difficult to use ;)
[05:19:48] <Sefid_par> megal0maniac: Thank you
[05:43:45] <Grievre> If an AVR is running off of a 5V supply, will 3.3V on an input register as a 1?
[05:44:01] <Horologium> probably.
[05:44:06] <Grievre> or does it have to be closer to Vcc
[05:44:12] <Horologium> nope.
[05:44:16] <Horologium> let me find the chart for you.
[05:44:54] <Horologium> http://www.allaboutcircuits.com/vol_4/chpt_3/10.html
[05:45:07] <Horologium> http://www.interfacebus.com/voltage_threshold.html better one.
[05:46:07] <Horologium> so, pretty much anything over 2.5V will register high.
[05:46:33] <Grievre> oh neat
[05:46:56] <Steffanx> Grievre, also take a look at the characterics part in the datasheet
[05:47:50] <OndraSter> 3.3V will register as 1 just fine
[05:48:29] <Horologium> atmega8 datasheet says 2.7V
[05:49:04] <Grievre> hm
[05:49:13] <Horologium> err....forget I said that.
[05:49:21] <Horologium> too early....still looking at datasheet.
[05:49:25] <Horologium> but probably lower than that.
[05:50:41] <Horologium> ok..not seeing it but I know it's in there....2.5V should be more than safe though so 3.3 should be good too.
[05:51:23] <Horologium> oh man....a foot of snow overnight here...30 to 50 mph winds...and still snowing.
[05:51:26] <Horologium> blizzard.
[05:51:38] <Horologium> first measurable snowfall of the year too.
[05:51:52] <Horologium> des moines iowa is shut down.
[05:52:19] <Horologium> only 3rd time in history that the des moines bus system is totally shut down too.
[05:52:42] <Grievre> another question: how many cycles of the I2C clock does it take to transmit a 24-byte piece of data from master-to-slave?
[05:52:52] <Grievre> e.g. if the I2C clock is 400 kHz, how many of those 24-byte chunks can you send per second
[05:53:20] <Grievre> Thanks for answering the first one btw
[05:53:36] <Horologium> one clock cycle per bit.
[05:54:00] <Horologium> plus some overhead
[05:54:09] <Grievre> right obviously I'm asking what the overhead is :P
[05:54:33] <Grievre> er well I guess I wasn't sure if it was exactly one cycle per bit
[05:55:18] <Horologium> depends on if you are sending a data stream or byte at a time.
[05:55:32] <Horologium> it's in the datasheet...in rather vivid detail.
[05:56:01] <Grievre> yes I was hoping someone knew the answer off the top of their heads
[05:56:06] <Grievre> but thanks anyway
[05:56:43] <Horologium> and it kinda depends also on how fast the slave can accept data....it might do a hold while it processes incoming data....it will accept a byte at full speed then can hold the bus for a bit while it processes that byte then release to let the next come in.
[05:57:00] <Grievre> ah
[05:57:08] <Horologium> I usually figure, roughly 4 clocks of overhead
[05:57:17] <Horologium> so, 12 per byte is safe usually.
[05:57:47] <Grievre> Well the AVRs are acting as slaves here, do they ever hold? I would think not since their native clock speed is so much faster than the I2C bus
[05:57:58] <Grievre> or does it hold while the ISR runs?
[05:58:30] <Horologium> it depends on what the rest of the processor is doing...the hardware i2c(also known as twi) can accept one byte then it will hold until you clear the input buffer for the next incoming byte.
[05:58:40] <Grievre> ah
[05:59:02] <Horologium> so, if you are pulling the data out of the buffer fast enough there shouldn't be much of a slowdown.
[06:00:17] <Horologium> that's one of the nice things for i2c over rs232 in that the slave can say,,,hold up, let me do something with this data....
[06:00:45] <Grievre> you can do that over RS232 too, there are just multiple ways of doing it and they're not all so nice
[06:00:50] <jacekowski> you can do the same with rs232
[06:00:58] <Horologium> rs232 can do that too if you have full hardware handshaking but that is seldom done these days....and software handshaking can do it too but that involves retransmissions.
[06:00:59] <jacekowski> there is CTS and RTS signal
[06:01:24] <Grievre> XON/XOFF involves retransmissions?
[06:01:41] <Horologium> no...I always forget xon/off
[06:02:33] <Grievre> I think in that case you would expect that you get a handful of bytes after you tell the other end to be quiet
[06:03:16] <Grievre> Horologium: so even if the TWI interrupt handler pulls the data out as fast as possible I should assume there's at least /one/ I2C clock cycle wasted between each byte?
[06:03:18] <Horologium> but xon/off also requires some time overhead.
[06:03:57] <Horologium> I would...but I tend to be conservative on timings for things like that.
[06:04:36] <Grievre> k
[06:04:38] <Horologium> and if you had an o-scope you could watch and see your data flow and time it that way.
[06:04:52] <Grievre> mm, I only have access to analog scopes right now unfortunately
[06:05:34] <Horologium> properly adjusted you can see the data on an analog scope.
[06:06:34] <Grievre> hmm
[06:06:55] <Horologium> 30k homes and businesses in des moines iowa without power.
[06:07:05] <Horologium> I live in rural iowa and life is good.
[06:07:09] <Horologium> except that I'm snowed in.
[06:07:21] <jacekowski> well, that's because US grid is shit
[06:07:31] <Horologium> they just redid all the lines out here.
[06:08:02] <jacekowski> all substations here have at least two sources of supply
[06:08:12] <Horologium> they got a foot of snow overnight with 30 to 50 mile per hour winds.
[06:08:26] <Horologium> individual lines are down all over the city.
[06:08:26] <jacekowski> yeah, don't see a problem there
[06:08:35] <jacekowski> what? overhead lines?
[06:08:39] <Horologium> yup.
[06:08:48] <Horologium> mostly from trees falling on them.
[06:08:59] <jacekowski> you still have overhead lines there
[06:09:02] <Horologium> yup.
[06:09:09] <Horologium> wish we didn't but we do.
[06:09:41] <jacekowski> everything but most of 400kV and some 275kV is underground
[06:10:07] <Horologium> right down to 7.2kV is overhead here..
[06:10:35] <Horologium> costs too much and takes too much time to bury lines apparently.
[06:10:48] <Horologium> they figure it is cheaper to fix overheads than to put them underground.
[06:39:30] <RikusW> ok so that 5x5 25 pad bga is 2x2mm not 3mm...
[06:39:46] * RikusW measured it
[06:39:59] <RikusW> probable 400um pitch...
[06:40:15] <yunta> that's... small
[06:40:20] <RikusW> very
[06:40:28] <RikusW> its from a broken cellphone
[06:40:39] <RikusW> its silicon only, no epoxy at all
[06:40:40] <OndraSter> eh
[06:40:53] <RikusW> so basically only the die plus solder pads
[06:40:54] <OndraSter> I don't want to underrate you... but I am afraid you might not be able to solder that back on :D
[06:41:28] <RikusW> why, that would be easy :-P
[06:41:47] <RikusW> I'd use a single blob of solder :-P :-D
[06:41:59] <RikusW> you said nothing about no bridges ;)
[06:42:07] <OndraSter> :S
[06:42:08] <OndraSter> :D
[06:42:33] <RikusW> or correct position either..
[06:42:57] <RikusW> properly soldering that, well..., it might just be doable...
[06:44:17] <RikusW> or not...
[06:44:56] <RikusW> OndraSter: you can design and make a pcb for it ;)
[06:45:55] <OndraSter> mm
[06:45:58] <OndraSter> I might!
[06:46:08] <OndraSter> and home etch those 400um!
[06:46:17] <OndraSter> (why not use 0.4mm instead? sounds much nicer)
[06:46:18] <RikusW> 200um...
[06:46:20] <OndraSter> oh
[06:46:25] <OndraSter> 0.2mm... :P
[06:46:39] <RikusW> well the tracks would need to be more like 100um
[06:46:44] <RikusW> 4 mil...
[06:46:48] <OndraSter> that is fine
[06:47:35] <OndraSter> hah let's see if I have got enough USB ports
[06:48:05] <OndraSter> hmm I don't have enough 2x5 cables though
[06:48:19] <OndraSter> two.. one crossed, one regular
[06:48:21] <RikusW> what for ?
[06:48:28] <OndraSter> logic analyzer :D
[06:52:21] <OndraSter> I need: USB B for Dragon, microUSB for board, USB B for serial-USB and another miniUSB for Altera USB Blaster :D
[06:52:28] <OndraSter> I think I should fit
[06:54:30] <RikusW> quite a setup you have there
[06:54:54] <OndraSter> yeah
[06:54:58] <OndraSter> and not enough space on my table :D
[06:55:01] <OndraSter> I should clean up my table
[06:55:02] <OndraSter> bothů
[06:55:03] <OndraSter> both.
[07:00:58] <RikusW> Aah, so its called -> flip chip ball grid array (BGA) packaging
[07:01:21] <OndraSter> damnit I do not have anymore any female wires I could use
[07:01:25] <OndraSter> I managed to power it all up
[07:01:30] <OndraSter> but I have no way to probe t!
[07:01:31] <OndraSter> it
[07:06:14] <RikusW> http://how-to.wikia.com/wiki/Guide_to_IC_packages
[07:10:45] <soul-d> :)
[07:14:14] <soul-d> that was my problem to when i made my analyzer looking all verry nifty but only enough wires to get 4 channels
[07:16:13] <jadew> seriously... up until now you didn't think you might need more usb ports / cables?
[07:16:39] <jadew> I have 2 hubs I'm not using (yet) and lots of cables
[07:18:22] <Tom_itx> morning all you foreigners and aliens
[07:18:33] <jadew> morning
[07:19:20] * RikusW is a foreigner not an alien :-P
[07:19:29] <OndraSter> I have got plenty of USB ports
[07:19:31] <OndraSter> well, I thought I did
[07:19:35] <OndraSter> 6x USB2 + 2x USB3
[07:19:37] <OndraSter> on the back of my PC
[07:19:41] <OndraSter> then two in my LCD monitor
[07:19:43] <OndraSter> as a hub
[07:19:45] <Tom_itx> chain a few hubs together
[07:19:46] <OndraSter> but... it is all full :D
[07:20:06] <Tom_itx> it could look like all the extension cords under my desk
[07:20:08] <OndraSter> I don't have female connectors for regular pins
[07:20:10] <OndraSter> not USB
[07:20:33] <Tom_itx> it snowed
[07:20:53] <Tom_itx> not alot though
[07:20:55] <jadew> OndraSter, welcome to china! http://dx.com/p/single-port-female-to-female-jumper-wire-set-50-pack-20cm-length-55454
[07:21:08] <OndraSter> :D
[07:21:15] <OndraSter> before it comes I would analyze it even on analog scope
[07:21:26] <OndraSter> I can even make my own female jumper wires
[07:21:37] <OndraSter> which I did
[07:21:41] <OndraSter> but not enough
[07:21:50] <jadew> you should deffinitely buy some of those
[07:22:42] <Tom_itx> dx has those too i'm pretty sure
[07:22:59] <Tom_itx> oh that is dx
[07:23:04] <jadew> :)
[07:23:04] <Tom_itx> brouser is slow
[07:23:09] <Tom_itx> didn't fully load
[07:23:28] <jadew> you know what I wanna buy/build? a serial hub
[07:23:44] <jadew> like usb to 4 serial ports or something like that
[07:23:48] <jadew> the more ports the better
[07:24:28] <jadew> we should have 10 serial ports comming out of the back of each PC
[07:24:39] <soul-d> meh i bought serial cable since i lost them all then afther fiddeling at 3 am the ethernet started to work
[07:24:54] <soul-d> i almost can read out my sd card on fpga from serial
[07:25:54] <soul-d> although serial is much easyer then tcp/ip stack :P
[07:26:06] <Horologium> jadew, have seen multiple serial ports to ethernet adapter.
[07:26:29] <jadew> Horologium, sounds like it would need external power
[07:26:48] <jadew> I saw ftdi has some chips that do usb to 4 x serial
[07:26:53] <jadew> but they're kinda expensive
[07:27:00] <jadew> like $15 or more
[07:27:06] <Horologium> they do need external power.
[07:27:15] <Horologium> it wouldn't be too difficult to do that with a usb-avr though.
[07:27:26] <Horologium> depending on the speed serial you need.
[07:27:39] <Horologium> you could setup as many as 4 serial endpoints I believe.
[07:28:17] <jadew> yeah, I guess that's doable
[07:28:19] <Horologium> http://www.digi.com/products/serialservers/portserverii#overview if you really need serial ports and lots of them.
[07:28:52] <jadew> nice
[07:29:07] <jadew> lol: $1,909.00
[07:29:29] <Horologium> http://www.digi.com/products/serialservers/portserverts#overview
[07:30:24] <jadew> yeah, not exactly what I need, I need a small thing on my desk with pins comming out of it
[07:30:35] <jadew> RX, TX, GND for each port
[07:30:46] <Horologium> never said they were cheap or small.
[07:31:07] <Horologium> I would just build one from a high end avr or pic with hardware usb onboard.
[07:31:28] <jadew> Horologium, yeah, that sounds like the cheappest approach
[07:31:29] <Horologium> I would do it with probably a pic32 as the usb interface and 4 or 8 small AVRs on an i2c bus.
[07:31:45] <Horologium> each small AVR handling rs232 and buffering.
[07:31:47] <jadew> i2c is too slow for this
[07:31:57] <jadew> I really want full speed
[07:32:01] <RikusW> use usb xmega
[07:32:18] <RikusW> like OndraSters coco
[07:32:18] <Horologium> an xmega with multiple usarts would work too.
[07:32:30] <jadew> yeah
[07:32:43] <RikusW> or even avr32 like the 3a3, then you have hispeed usb
[07:32:44] <Horologium> reason I would do it the way I said is because I can do it all through-hole and no surface mount....and I have all the parts needed.
[07:41:10] <karlp> cp2104 is a cheaper usb-4xserial chip...
[07:43:11] <karlp> jadew: that was for you..
[07:43:47] <jadew> ah, thanks
[07:43:59] <karlp> no crystal required even.
[07:44:02] <jadew> just found an e-mail telling me scriptlance was sold to freelancer.com
[07:44:09] <karlp> but it's probably QFN only..
[07:44:12] <jadew> and figured to login just to see what's happening
[07:44:25] <jadew> apparently they've been sucking my money out, every month
[07:44:35] <jadew> $10 monthly dormant account fee taken
[07:44:45] <jadew> (I had some money in there since a while back)
[07:45:17] <karlp> yeah, this is why you never leave money in any account online.
[07:45:29] <karlp> they like to change the terms and start taking it
[07:45:52] <jadew> yeah, that's really screwed up
[07:45:59] <jadew> I'm glad I opened the e-mail now
[07:46:11] <jadew> I almost never check that e-mail
[07:48:02] <karlp> sorry, cp2105 and cp2108 are dual and quad uart,
[07:48:07] <karlp> 2104 is single with some extra gpios and stuff
[07:50:04] <jadew> karlp, I can't find the chip at my local distributor
[07:50:10] <jadew> guess I should check ebay
[07:50:21] <jadew> brb, I'm really pissed off about this freelancer scam
[07:52:01] <karlp> well, it's not friendly anyway really, the quad is a 64pin qfn...
[07:52:20] <karlp> but it's pretty much drop on board with a couple of decoupling caps and a usb connector and you're done.
[07:52:53] <karlp> which is possibly simpler than using a micro with more uarts or anything.
[07:54:03] <jadew> karlp, yeah, sounds better
[08:48:09] <Lt_Lemming> http://youtu.be/JUOOCtB2OEw <--- 2nd test of the board from last night, with 72 channels going
[09:49:25] <OndraSter> so
[09:49:29] <OndraSter> I have moved finally
[09:49:41] <OndraSter> the SMPS that should be feeding 5V into tuner and 12V into the panel seems dead
[09:49:47] <OndraSter> well, not entirely
[09:49:54] <OndraSter> on the output cap there is something between 1.5 and 2V
[09:49:58] <OndraSter> instead of 12V
[09:50:35] <OndraSter> I do wonder, if I hook up external 5V to the 5V_TUNER and ignore the panel for now, what will happen
[09:50:48] <OndraSter> whether the board resets due to panel issue or due to the tuner..
[09:50:50] <OndraSter> not responding on i2c
[09:58:42] <OndraSter> I am not sure if the 5V reg can take more current :D
[09:58:51] <OndraSter> 19.5V -> 5V @ nearly 1A
[10:16:57] <dunz0r> OndraSter: Wooha. What regulator is it?
[10:17:32] <dunz0r> 19.5W of heat that needs to be discipated by the regulator if it's that kind.
[10:29:46] <OndraSter> I know
[10:29:52] <OndraSter> it is 7805 with ghetto heatsink :D
[10:29:55] <OndraSter> and I FIXED IT
[10:30:09] <OndraSter> the 12V SMPS drives the panel and the tuner itself
[10:30:19] <OndraSter> and appearantly if tuner was not responding on i2c it reset the chip
[10:30:27] <OndraSter> I routed the 5V from the standby line
[10:30:27] <Essobi> :D
[10:30:30] <OndraSter> and now it does not reset anymore
[10:30:39] <OndraSter> now I need 12V for panel from somewhre
[10:30:42] <OndraSter> somewhere
[10:30:59] <OndraSter> I have got few 7812... :D :D
[10:48:14] <Jan-> let me get this straight
[10:48:21] <Jan-> attiny13A has a comparator
[10:48:26] <Jan-> but atmega168 doesn't?
[10:48:52] <darknite> it does
[10:48:55] <Jan-> hm
[10:49:00] <Jan-> where did I get the idea it didn't
[10:49:09] * Jan- cleans out brain with vacuum cleaner to make more room for facts
[10:49:43] <darknite> probably from the mob in ##electronics
[10:50:01] <darknite> but it's on the first page of the datasheet, in the summary list of all features
[10:50:58] <OndraSter> http://clip2net.com/s/2CVPb
[10:51:03] <OndraSter> >15W into that :D
[10:52:59] <dunz0r> OndraSter: Haha, that heatsink will probably do though :)
[10:53:37] <OndraSter> well it kept shutting down :D
[10:53:43] <OndraSter> on 1.2A or so when it got hotter
[10:54:30] <OndraSter> it is good ol' tesla
[10:54:34] <OndraSter> I cannot decode the date
[10:54:37] <OndraSter> W69321
[10:56:37] <Jan-> Right,s o it shares pins with the ADC
[10:56:46] * Jan- got the wrong idea, sorry
[10:57:34] <OndraSter> yes
[11:07:50] <jadew> OndraSter, what's that?
[11:08:21] <OndraSter> what's what?
[11:08:32] <jadew> the big ass heatsink with the transistor
[11:08:37] <jadew> what does it do?
[11:08:38] <OndraSter> that is 7805
[11:08:39] <OndraSter> LDO
[11:08:42] <OndraSter> er, not LDO
[11:08:44] <jadew> oh, really?
[11:08:44] <OndraSter> regular 7805
[11:08:47] <OndraSter> yes
[11:08:53] <OndraSter> ghetto heatsink from old CDROM drive :D
[11:08:59] <jadew> nice
[11:09:07] <jadew> how much power can it deliver?
[11:09:21] <jadew> should easily do 100W, no?
[11:09:23] <OndraSter> well, now it was dropping 19.5V into 5V with currents upto 1.2A
[11:09:29] <OndraSter> but it shut down after like 30 seconds :D
[11:09:31] <OndraSter> from overheating
[11:09:38] <OndraSter> hell no
[11:10:04] <jadew> hmm
[11:10:10] <jadew> so only 5W? wth..
[11:10:22] <jadew> I have smaller transistors that can do 100W
[11:10:24] <OndraSter> you mean 15W
[11:10:29] <OndraSter> LOL they can't
[11:10:33] <OndraSter> with heatsinking they can
[11:10:40] <jadew> well, yeah
[11:12:39] <dunz0r> I had issues with an LM7805 overheating at just 15V a while back.
[11:12:54] <dunz0r> The current draw was probably about 1A or so.
[11:13:09] <dunz0r> Two diodes in series solved the problem :]
[11:13:48] <Horologium> socket 7 heatsink with a fan on it works wonders for 7805!
[11:14:14] <dunz0r> Haha. Bit big no?:)
[11:14:33] <Horologium> I have a testbed/breadboard/power supply setup with that.
[11:14:51] <Horologium> with 3.3V, 5V, 9V, and 12V regulators on the heatsink.
[11:14:57] <Horologium> feed the entire thing with 15V
[11:15:44] <Horologium> the fan runs off the 12V regulator and I have a little avr monitoring the fan and 4 temp sensors.
[11:21:32] <nas> i have a olimex avr-p28 board here
[11:21:52] <nas> im wondering if it matters what polarity ac adapter i use on it
[11:22:14] <nas> it feed through a rectifier chip
[11:22:46] <nas> so im pretty sure it will make sure the polarity is right no matter what
[11:22:56] <nas> but to much is at stake so i thought i would ask for sure
[11:23:30] <nas> if you put negative polarity through a bridge rectifier does it flip the polarity around
[11:25:19] <nas> ok i think i found answer
[11:36:24] <Essobi> Herrrrp.
[11:37:38] <edmont> hi
[11:37:38] <tobbor> hi edmont.
[11:38:12] <edmont> any way of reading from uart without blocking?
[11:40:52] <Jan-> wow, television is awful
[11:40:53] <RikusW> yes, check the flags first
[11:41:10] * RikusW buys Jan- a radio ;)
[11:41:31] <Jan-> I have a radio, rikus
[11:42:45] <Jan-> I'm not sure when it went from "there's nothing amazing on, but I'll have this on as background while I do something else"
[11:42:52] <Jan-> to "there is nothing I can even stand to have on"
[11:43:51] * RikusW watch only downloaded series...
[11:43:53] <RikusW> no tv
[11:44:24] * RikusW got LH28F800BGHE 512k x16 flash for free :)
[11:44:37] * Jan- gives up trying to pronounce that on the third attempt
[11:44:47] <Jan-> is that like
[11:44:50] <Jan-> 1kb of flash
[11:45:59] <RikusW> 1MB
[11:46:52] <Jan-> oh yeahs orry
[11:46:58] * Jan- meant that, of course
[11:47:00] <Jan-> *ahem*
[11:47:55] <Jan-> wow, you could store almost ten seconds of CD quality audio!
[11:48:34] <Horologium> or 20 minutes of video and audio if you have an attack helo hidden in a secret cave in the desert....aka airwolf.
[11:48:44] <RikusW> usb sticks store 16gb in the same size chip..
[11:48:45] * Jan- loves airwolf!
[11:49:01] <Jan-> Dom, dom dom dom dom, dom dom dom dom, dom dom dom dom, dom, der dom dom dom-der dom-der dom!
[11:49:08] * Jan- hums airwolf theme
[11:49:21] <Horologium> remember the little briefing videos they would get on 5.25 inch floppies?
[11:49:29] <Jan-> uh... not specifically
[11:49:33] <Jan-> but I believe you :)
[11:49:37] <RikusW> its a 48pin tsop...
[11:49:39] <Jan-> how much storage is there one one of those?
[11:49:58] <RikusW> 1.2MB
[11:50:03] <RikusW> or 360kb if its older
[11:50:03] <Horologium> 720k or 1.2M
[11:50:06] <Jan-> http://www.youtube.com/watch?v=-dwmf-wx8VQ
[11:50:10] * Jan- bops along to the music\
[11:50:19] <Horologium> older were 360 or 180k
[11:50:22] <Jan-> All hail Ernest Borgnine!
[11:50:23] <RikusW> 720k and 1.44MB for 3.5"
[11:50:27] <soul-d> remixed
[11:50:41] <Jan-> yes but quite nice
[11:50:46] <RikusW> I actually still have some 360kb disks around
[11:51:02] <RikusW> and drives for them....
[11:51:04] <Horologium> RikusW, I have older than that even...commodore floppy drives that work,,,and disks for them.
[11:51:31] <RikusW> those BIG ones ?
[11:51:34] <Horologium> and recently I helped a group recover data from 8 inch floppies...with an old drive...
[11:51:37] <RikusW> 7" or something ?
[11:51:46] <Horologium> RikusW, no...commodore floppies were 5.25 inch.
[11:51:50] <Horologium> 8 inch were older.
[11:51:57] <Jan-> the 5.25" ones are the big square literally-floppy disks, right?
[11:52:02] <RikusW> antiques :)
[11:52:05] <Jan-> With a hole in the middle?
[11:52:07] <Horologium> we built a serial interface to an old 8 inch drive.
[11:52:11] <RikusW> yep
[11:52:11] <Horologium> Jan-, yes...
[11:52:48] * Jan- hovers overhead in airwolf
[11:52:52] <Jan-> *spooky wolf howl noises*
[11:53:02] <Jan-> now that's what I call a non-rofl-copter
[11:54:08] <soul-d> http://www.youtube.com/watch?v=Fy5DQ3CBFXM
[11:54:12] <soul-d> thats the real one
[11:55:05] <Jan-> oddly I prefer the remix.
[11:55:12] <Jan-> that must be alate season one
[11:55:18] <Jan-> the early ones started with the spooky wolf howl noises
[11:55:52] <Jan-> http://www.youtube.com/watch?v=nIoSPevvsds like that
[11:58:38] <soul-d> :)
[12:08:05] <OndraSter> ARRRRRRRRRGH
[12:08:10] <OndraSter> IC1102 = SMPS for 12V panel
[12:08:18] <OndraSter> I desoldered it
[12:08:27] <OndraSter> and then I found out that the panel is actually 5V ?!
[12:08:34] <OndraSter> the filter choke was on the 5V line rather 12V line
[12:08:36] <OndraSter> I don't get it!
[12:08:40] <OndraSter> how the hell it is wired up
[12:09:49] <OndraSter> even datasheet for the LCD itself says 5V
[13:20:58] <OndraSter> connected to PC PSU: the board still works
[13:21:01] <OndraSter> even remote works :P
[13:23:52] <soul-d> my old pc supply makes zapping noises in the connector then shutdown ocasionaly :( but those are still on main's side
[13:24:17] <OndraSter> I am using PC PSU to power TV
[13:24:23] <OndraSter> and I still need 12V
[13:24:25] <OndraSter> for the amplifier
[13:24:26] <OndraSter> audio
[13:24:32] <OndraSter> and CCFL backlight converter
[13:25:24] <soul-d> :)
[13:29:02] <soul-d> im reading up on tcp/ip stuff see if i can get the enc28j to do somthing probably ping reply first
[13:36:54] <Horologium> soul-d, have you looked at the tuxgraphics tcp/ip stack?
[13:41:35] <soul-d> a little bit but since ill be using fpga mostly only the diagrams maybe looking at the init etc but not that far yet first have to do the spi communication
[13:57:22] <OndraSter> now just get 12V for audio amp..
[16:17:10] <OndraSter> yeah
[16:17:12] <OndraSter> it ALL WORKS
[16:17:28] <Tom_itx> WOOT!
[16:17:36] <Tom_itx> what works?
[16:17:46] <OndraSter> the 100 years old LCD TV
[16:17:48] <OndraSter> still
[16:17:55] <OndraSter> better than what my mum has got right now
[16:18:10] <Tom_itx> backlight give out?
[16:18:28] <OndraSter> no
[16:18:34] <OndraSter> the power supply
[16:18:36] <OndraSter> completely
[16:18:39] <OndraSter> new caps didn't help
[16:18:45] <OndraSter> and then also the SMPS on the logic board too :D
[16:18:53] <Tom_itx> suppertime
[16:18:58] <OndraSter> I am using PC PSU to get 12V (audio + CCFL) and 5V (logic itself)
[16:19:07] <OndraSter> duh where are all my screws
[16:19:30] <OndraSter> I took it apart... hmm
[16:19:34] <OndraSter> half a year ago lol
[16:20:16] <soul-d> thats why you have tape
[16:20:26] <OndraSter> haha
[16:20:28] <OndraSter> a lot of tape then
[16:20:59] <OndraSter> this was a nice repair
[16:21:26] <OndraSter> I was lucky to get full service manual with all the schematics and diagrams
[16:25:26] <OndraSter> I was also lucky to find out the SMPS failure so quickly
[16:25:30] <OndraSter> I just probed all caps around the place
[16:25:31] <OndraSter> elytes
[16:25:41] <OndraSter> and third one I tested was showing some weird voltages ;)
[16:26:40] <soul-d> donno if i repaired anything i usualy break stuff
[16:40:48] <OndraSter> soul-d, repairing is awesome experience
[16:40:55] <OndraSter> that "FINALLY" moment
[16:40:58] <OndraSter> when you:
[16:41:01] <OndraSter> a) crack the problem
[16:41:04] <OndraSter> b) fix the problem
[16:45:38] <soul-d> missing the tools to do that effeciently :P
[16:51:24] <OndraSter> tools..
[16:51:34] <OndraSter> I have got 10 years old cheap DMM where the mA fuse is blown
[16:51:38] <OndraSter> and I have not replaced it yet
[16:51:40] <OndraSter> analog scope
[16:51:45] <OndraSter> screwdrivers, ..
[16:51:52] <OndraSter> and my mind ;)
[16:52:09] <OndraSter> and one bench PSU 15V/3A
[16:52:11] <OndraSter> that is all I have
[16:52:18] <OndraSter> oh, and soldering iron with hot air gun
[17:26:04] <OndraSter> http://clip2net.com/s/2D0XV
[17:26:19] <OndraSter> http://clip2net.com/s/2D0XY
[17:26:38] <OndraSter> http://clip2net.com/s/2D0Y3 (my new power cable)
[17:27:00] <OndraSter> http://clip2net.com/s/2D0Yf
[17:27:01] <OndraSter> with molex :D
[17:27:24] <OndraSter> and to sum up LG quality: http://clip2net.com/s/2D0Yl
[17:27:32] <OndraSter> (who does not know, it should be "česky")
[17:28:00] <Horologium> I thought it was czesky
[17:44:42] <OndraSter> Horologium, we are not polish
[18:01:31] <Horologium> speak for yourself.
[18:06:42] <OndraSter> we (czechs) are not polish