You may want to read this account of the events at Fukushima Daiichi nuclear power station at 2:46 p.m. on 11 March, The meltdown that wasn't ...
44939
Pete Miles
ajklz5
Mar 23, 2011 5:12 am
x^n and -x^n and (-x)^n are considered unary operations (x-y)^n, -(x-y)^n, and (sin(theta)-cos(theta))^n are not unary operatations This is the root of the...
44940
Kevin Ross
kevinwross
Mar 23, 2011 6:47 am
This is a very interesting and as far as I can tell fairly non-controversial scale of radiation exposure http://xkcd.com/radiation/ Yes, even though it is on...
44941
Kevin Impson
internetgiest
Mar 23, 2011 11:17 am
Hello, I have been trying to pull my I2C EEPROM experience from my brain without success. I am using the 24LC256 from MicroChip, it can have eight(8) 24LC256's...
44942
Peter Balch
peterbalch@...
Mar 23, 2011 11:47 am
From: Richard Greenway ... I wasn't thinking so much about re-using the part but about changing component values or even changing the circuit. Pretty well all...
44943
David Buckley
robots42
Mar 23, 2011 3:18 pm
I don't see how it can not work chips A2,A1,A0 are all hardwired to different addresses with !WR=0 IIC Control word 1010,A2,A1,A0,0 with A2,A1,A0 set for...
44944
David Buckley
robots42
Mar 23, 2011 3:38 pm
Peter I have used the Portasol Butane soldering torch with an hot air tip to unsolder 4mmsquare smt chips. Tips still available from ?Farnel in 2006. New ProII...
44945
Dan Tebbs
dantebbs
Mar 23, 2011 4:01 pm
Use the source Luke! ... Sec 5 of the data sheet has addressing information. The app notes may be helpful if "it's doing surprising things". -Dan ... -- Dan...
44946
Alan
km6vv
Mar 23, 2011 5:07 pm
Sounds accurate, from what I remember of navel reactors. SSBN622 Alan KM6VV From: SeattleRobotics@yahoogroups.com [mailto:SeattleRobotics@yahoogroups.com] On...
44947
Richard Greenway
fenagogue
Mar 23, 2011 6:12 pm
... Some may find it so, I don't. I always prefer working and hacking on SMT boards over through hole. More of the traces are on the same side, so it's...
44948
Peter Balch
peterbalch@...
Mar 23, 2011 7:42 pm
From: Richard Greenway ... You mean the huge heat-sink under the chip? That's not a problem I've had to face yet. Are you saying you use hot air on the top of...
44949
billa_willapabay_org
billa_willap...
Mar 24, 2011 1:24 am
In every programming language I've used (at least a dozen by now) the unary operators take precedence that way. That said, every good programmer adds extra...
44950
Pete Miles
ajklz5
Mar 24, 2011 4:52 am
Well, One of the software companies that I have contacted about this has confirmed that this is a serious error and that they are going to release a bug fix to...
44951
dan michaels
oric_dan
Mar 24, 2011 4:36 pm
... Is it just bad coding or, more seriously, lack of knowledge of the correct rules? I'll bet the former, but we'll probably never know. As Miro Samek...
44952
Charles Holzschuh
xolzscxux
Mar 25, 2011 9:57 pm
I have talked to two people who were interested. There may not be enough interest. However, I push on. I just noticed SchmartBoard is clearing out QFN 56 and...
44953
Richard Greenway
fenagogue
Mar 25, 2011 10:06 pm
Really, I don't mind running one after a meeting for any # that want to show. 1 to 30 is easy. I can bring everything except enough soldering irons, so bring...
44954
Randy M. Dumse
rmdumse
Mar 26, 2011 2:24 am
dan michaels said: Tuesday, March 22, 2011 12:41 PM ... Don't get me started. ... I don't see the problem as reselling. But you've got to wonder about "open...
44955
dan michaels
oric_dan
Mar 26, 2011 6:09 am
... You can definitely see all the cons, don't you see any pros? Maybe kickstarter is just an interesting form of grass-roots venture capital, for people...
44956
Thomas
famousbots
Mar 26, 2011 6:32 am
Yeah, but don't you need a surgeon's hand? I mean, it's all so very TINY. If I tried, it would become all one ball of solder. Solder bridges? Heck, I'd have ...
44957
Mike Payson
mpayson
Mar 26, 2011 6:44 am
_I_ can do it. If I can do it, you can too. :-) You will get solder bridges, but they are easy to fix. If you use the skillet method, it is even easier....
44958
fraser125
Mar 26, 2011 4:52 pm
To All, First I'll start with a little bit of back story to give some more context to my questions below. A few weeks ago I had an idea for a Fondue Timer. A...
44959
dan michaels
oric_dan
Mar 26, 2011 7:09 pm
... Cool, a classic embedded systems problem. Everyone has their own ideas, based on personal history. The other thing you need to think about in your...
44960
Wim Lewis
wimlwiml
Mar 26, 2011 7:43 pm
... Use as little solder as possible and plenty of flux, and (amazingly!) it pretty much works. When you inevitably do make a bridge, you can easily sop up the...
44961
David Buckley
robots42
Mar 26, 2011 7:46 pm
You are going to run the LEDs from watch batteries?!!!! Up to ten of them! I would have thought the power taken by the micro would be the least of your...
44962
David Buckley
robots42
Mar 26, 2011 8:23 pm
Using a hot air pencil it is a LOT easier to remove a small sm chip than a through hole one. Flames are too hot and burn stuff. ... From: Wim Lewis To:...
44963
fraser125
Mar 26, 2011 9:14 pm
I'm sorry maybe the back story was too long and distracting. I have a business idea to make it easier to find a Microcontroller that is a perfect match for...
44964
David Buckley
robots42
Mar 26, 2011 9:36 pm
Don't be ridiculous, that link is not applicable to LED use at all. One thing your list fails to address is the quantity involved. ... From: fraser125 To:...
44965
Peter Balch
peterbalch@...
Mar 26, 2011 10:04 pm
From: fraser125 ... That's a good way to start. AFAIK _any_ micro that has that much IO will be able to do what you want. ... Hmmm. Not really. What reduces...
44966
Peter Balch
peterbalch@...
Mar 26, 2011 10:10 pm
From: David Buckley ... What make/model do you use? Peter...
44967
David Buckley
robots42
Mar 26, 2011 11:19 pm
Peter The PortasolPro butane pencil which I have had for 20 years (I don't use it except in emergencies and I haven't been doing that sort of thing for a long...
