For LED control pulse width modulation is the proper way to do it. A dimmer switch is a poor hack, as LEDs are really only on or off. There is very little in between.
You can also make a quick adjustable PWM controller with a 555, a potentiometer, and a comparator like an LM111. (and a few caps, and other resistors) Hook up a 555 in ocsilator mode. Aim for a frequency faster then 120Hz. I would start with 1kHz and see what it looked like. That might be too fast for the LEDs to properly turn off. Connect one input of the comparator to the RC circuit on the 555. Connect the other imput to the sweeper pin on the pot. Connect the pot between Vcc and ground. Adjusting the pot will change the duty cycle of the comparator output from 0% to 100%. You could drive the leds directly from the comparator, but it is better to use a bjt or fet.
Obviously there is some fine tunning that you can do, but that is the general idea.
This circuit is nice because you only need one 555 which can drive many comparators. You only need one pot and comparator per colour of led. The microcontroller is nice because you can preprogram a number of pleasing colours, as well as automatically sweep throught those colours.
Currently you can't reasonably crack the game. Some of the content has to be downloaded from Valve. Once the authentication servers are online then a crack will be possible. With an unlocked game it should be possible to either package the whole thing up, or there may just be one file with a decryption key.
But until then you can't play the game. And this is the point. Valve wants to prove that their content delivery system (er denial system) works. Valve wants to sell Steam to other software publishers and developers. Valve wants to show that Steam will prevent simple CD copying and keygens. What better way to do it then unleash HL2 and prevent people from playing.
I doubt Vevendi really gives a damn. They have already sold the boxed game.
Replace the RG58
on
WiFi Bridging?
·
· Score: 2, Interesting
A good place to start would be to replace the RG58 which is a terrible cable for 2.4GHz. That said -65db is not a weak signal. -90db is a weak signal. It could be that you are saturating your recievers. Try lowering the power.
Why bother with a class action lawsuit? If a store refuses to honor their return policy take the store to small claims court. (Assumeing that it was not a huge purchase.) That is what small claims court is for. Small claims court is really easy to work with. Do your homework, file a few forms, have a chat with a judge, and you are done.
On average it is less then 1%, but for some stores it is probably much higher. It would depend on what was sold, and the type of customers who frequent the store. For example grocery stores probably don't have this problem.
I would go so far as to say that a blog is just a mailing list and Usenet newsgroups moved to the web. Not that moving to the web is a bad thing. Certainly blogs are more accesible, and authors have more control then either usenet or mailing lists allowed. But looking at the "blog community" I see the same sorts of people I did back in the pre-spam newsgroups. So I don't see how blogs will revolutionize the world.
It is too bad that you have a problem with the song. The song is not promoteing the ownership and restricting of land. The song is actually about removeing those barriers, and community ownership. As I understand these are Native American ideals. It is essentially a hippi folk song that was ahead of its time.
I have met more then a few fighter pilots (mostly F-16). Their general attitude is pretty close to "teenager." Many looked and acted like 19 year olds complete with the huge ego.
Medical statistics have been intimately tied to war, at least since Florence Nightingale.
The releationship btween medicine and war is probably older then that. Some historians claim that modern (western) medicine, or atleast surgery, was born in the Napoleanonic Wars. Prior to those wars medicine was a quack science where rich clients had as much say in the procedures as the so called doctors. Durring the war the surgeons had a completely different class of patient. Unlike the rich patrons, the wounded soldiers had little say in their treatment which allowed the surgeons to actually practice medicine. Big advances were made in amputation and cleanliness procedures.
On furthure reflection it occured to me that if it were not for people like danamania humanity would still be trying to figure out the plow. Hell most of humanity would still be stumped by cave paintings.
Hmm. Is the plow the most important invention in all of Civilization? Discuss.
seriously. a true geek or nerd is always asking questions and wondering if something will work. I can only surmise from the negative response that many of the posters are reading the wrong website.
kudos to danamania for wondering if this would work. it is useless, but it still geeky cool.
The problems with Novec is that it has a low boiling point of 49C, and prolonged exposure to its vapours is hazardous. This is not a liquid you want sitting in an open container next to your desk.
I could not find any information on its heat conductivity.
So the only use is either to hassle ordinary citizens while pretending it's helping fight terrorism
Some people would say that hassleing ordinary citizens is exactly the point of the chekcpoints. The idea is that checkpoints help to maintain a "culture of fear." The same people would say that the point of maintain this fear is to more easily control the citizens.
I don't necessarily agree with these theories. But when I see legislation like this that only pretends to fight terrorism I tend to wonder.
By default sudo (on all *nix systems) is configured to only request a password once within a set time period. (Read the man page for details.) It would be possible for a piece of smart malware to wait for the user to issue a sudo command. After the sudo ticket has been issued the malware could use sudo to gain root access without a password.
I do not know how this affects OSX. Some preference controls and updates require a password similar to sudo, but I do not know if sudo is used.
The "twist" in the high voltage transmission wires is to reduce capacitive loading issues between the wires and the ground. It is not intended to reduce the 60/50Hz radiation.
I have always been a big fan of installing fresh on a new machine and copying the data over. This applies to most OSes. This method gives you a chance to test the new release before going into production. And once in production you can always switch back to the older machine if something goes wrong. Not enough people test an upgrade or have a downgrade procedure.
If you don't have a spare server don't be affraid to use an intermediate temporary server. It involves installing the os and copying data twice, but it is not as big a hassle as it sounds. If possible use fresh harddrives saving the old OS and data as a 'warm' backup.
Unfortunately if you are running a colocated server you probably can't do this. My only advice then is start Tuesday morning. Everyone knows not to start an upgrade Friday afternoon, but so many people still do. If you follow the instructions in the FreeBSD handbook your upgrade should be problem free.
Re:It will probably do you more harm than good&
on
PhD's in the Industry?
·
· Score: 2, Insightful
Most shops avoid hireing fresh PhDs unless they really need them. Everything (H)elix1 wrote is basically true. The fear of an overqualified employee leaving is a valid concern. It is an employers market right now, so employers can be selective.
In contrast many employers appreciate an employee who earns a PhD while on the job. Part time graduate work is quite common. Even the few R&D shops that really appreciate PhDs seem to prefer PhDs earned while on the job over fresh PhDs.
Install FreeBSD 4.10. It is the current stable version of FreeBSD. 4.10 will give you a good idea of all that FreeBSD has to offer. FreeeBSD 4.10 is not outdated. It was released in May 2004 and includes gnome 2.6 and KDE 3.2.2.
The FreeBSD install is easy provided that you follow the documentation. If you don't have a second computer on which to view the installation guide, print it out.
Ofcourse the professor is going to use her discretion with students who can not vote. Obviously if you thought of this problem so did she.
For other students, it might be quite a morass to figure out if they can vote
I will give you the benefit of doubt and assume that you have not attended a university, or the one you did attend wasn't very good. A good university professor is always more interested in the methods used to achieve a goal then the actual goal itself. In other words: showing your work is more important then the correct answer. Now I know it is hard to find good professors. Indeed they are probably a minority. However this professor has shown that she thinks outside of her field and beyond the classroom. This is a pretty good indication that this professor is at least "decent." It is probable that if one of her students can not vote, and can explain why, then that student will recieve full marks.
I am disapointed by the negative attitude towards this professor. She should be congradulated for encouraging others to think about voteing.
Slashdot Mirror
The proper cable is quite affordable. Most of the cost is in the N connectors. For example see Hyperlink Tech cable assemblies.
hey that is nice. Thanks for the link.
For LED control pulse width modulation is the proper way to do it. A dimmer switch is a poor hack, as LEDs are really only on or off. There is very little in between.
You can also make a quick adjustable PWM controller with a 555, a potentiometer, and a comparator like an LM111. (and a few caps, and other resistors) Hook up a 555 in ocsilator mode. Aim for a frequency faster then 120Hz. I would start with 1kHz and see what it looked like. That might be too fast for the LEDs to properly turn off. Connect one input of the comparator to the RC circuit on the 555. Connect the other imput to the sweeper pin on the pot. Connect the pot between Vcc and ground. Adjusting the pot will change the duty cycle of the comparator output from 0% to 100%. You could drive the leds directly from the comparator, but it is better to use a bjt or fet.
Obviously there is some fine tunning that you can do, but that is the general idea.
This circuit is nice because you only need one 555 which can drive many comparators. You only need one pot and comparator per colour of led. The microcontroller is nice because you can preprogram a number of pleasing colours, as well as automatically sweep throught those colours.
People downloading a crack
Currently you can't reasonably crack the game. Some of the content has to be downloaded from Valve. Once the authentication servers are online then a crack will be possible. With an unlocked game it should be possible to either package the whole thing up, or there may just be one file with a decryption key.
But until then you can't play the game. And this is the point. Valve wants to prove that their content delivery system (er denial system) works. Valve wants to sell Steam to other software publishers and developers. Valve wants to show that Steam will prevent simple CD copying and keygens. What better way to do it then unleash HL2 and prevent people from playing.
I doubt Vevendi really gives a damn. They have already sold the boxed game.
A good place to start would be to replace the RG58 which is a terrible cable for 2.4GHz. That said -65db is not a weak signal. -90db is a weak signal. It could be that you are saturating your recievers. Try lowering the power.
Why bother with a class action lawsuit? If a store refuses to honor their return policy take the store to small claims court. (Assumeing that it was not a huge purchase.) That is what small claims court is for. Small claims court is really easy to work with. Do your homework, file a few forms, have a chat with a judge, and you are done.
less than 1 percent of your customers are jerks
On average it is less then 1%, but for some stores it is probably much higher. It would depend on what was sold, and the type of customers who frequent the store. For example grocery stores probably don't have this problem.
I would go so far as to say that a blog is just a mailing list and Usenet newsgroups moved to the web. Not that moving to the web is a bad thing. Certainly blogs are more accesible, and authors have more control then either usenet or mailing lists allowed. But looking at the "blog community" I see the same sorts of people I did back in the pre-spam newsgroups. So I don't see how blogs will revolutionize the world.
It is too bad that you have a problem with the song. The song is not promoteing the ownership and restricting of land. The song is actually about removeing those barriers, and community ownership. As I understand these are Native American ideals. It is essentially a hippi folk song that was ahead of its time.
I have met more then a few fighter pilots (mostly F-16). Their general attitude is pretty close to "teenager." Many looked and acted like 19 year olds complete with the huge ego.
HawkinsOS, for the adult in you.
Oh the irony. Your post is nothing but a childish cheap shot.
Medical statistics have been intimately tied to war, at least since Florence Nightingale.
The releationship btween medicine and war is probably older then that. Some historians claim that modern (western) medicine, or atleast surgery, was born in the Napoleanonic Wars. Prior to those wars medicine was a quack science where rich clients had as much say in the procedures as the so called doctors. Durring the war the surgeons had a completely different class of patient. Unlike the rich patrons, the wounded soldiers had little say in their treatment which allowed the surgeons to actually practice medicine. Big advances were made in amputation and cleanliness procedures.
fuck it.
On furthure reflection it occured to me that if it were not for people like danamania humanity would still be trying to figure out the plow. Hell most of humanity would still be stumped by cave paintings.
Hmm. Is the plow the most important invention in all of Civilization? Discuss.
seriously. a true geek or nerd is always asking questions and wondering if something will work. I can only surmise from the negative response that many of the posters are reading the wrong website.
kudos to danamania for wondering if this would work. it is useless, but it still geeky cool.
The problems with Novec is that it has a low boiling point of 49C, and prolonged exposure to its vapours is hazardous. This is not a liquid you want sitting in an open container next to your desk.
I could not find any information on its heat conductivity.
Despite the hype on the "enthusiast" sites thermal paste typically has good thermal conductivity compared to other semi liquid meterials.
So the only use is either to hassle ordinary citizens while pretending it's helping fight terrorism
Some people would say that hassleing ordinary citizens is exactly the point of the chekcpoints. The idea is that checkpoints help to maintain a "culture of fear." The same people would say that the point of maintain this fear is to more easily control the citizens.
I don't necessarily agree with these theories. But when I see legislation like this that only pretends to fight terrorism I tend to wonder.
Thank you. This is good to know.
By default sudo (on all *nix systems) is configured to only request a password once within a set time period. (Read the man page for details.) It would be possible for a piece of smart malware to wait for the user to issue a sudo command. After the sudo ticket has been issued the malware could use sudo to gain root access without a password.
I do not know how this affects OSX. Some preference controls and updates require a password similar to sudo, but I do not know if sudo is used.
The "twist" in the high voltage transmission wires is to reduce capacitive loading issues between the wires and the ground. It is not intended to reduce the 60/50Hz radiation.
I have always been a big fan of installing fresh on a new machine and copying the data over. This applies to most OSes. This method gives you a chance to test the new release before going into production. And once in production you can always switch back to the older machine if something goes wrong. Not enough people test an upgrade or have a downgrade procedure.
If you don't have a spare server don't be affraid to use an intermediate temporary server. It involves installing the os and copying data twice, but it is not as big a hassle as it sounds. If possible use fresh harddrives saving the old OS and data as a 'warm' backup.
Unfortunately if you are running a colocated server you probably can't do this. My only advice then is start Tuesday morning. Everyone knows not to start an upgrade Friday afternoon, but so many people still do. If you follow the instructions in the FreeBSD handbook your upgrade should be problem free.
Most shops avoid hireing fresh PhDs unless they really need them. Everything (H)elix1 wrote is basically true. The fear of an overqualified employee leaving is a valid concern. It is an employers market right now, so employers can be selective.
In contrast many employers appreciate an employee who earns a PhD while on the job. Part time graduate work is quite common. Even the few R&D shops that really appreciate PhDs seem to prefer PhDs earned while on the job over fresh PhDs.
Install FreeBSD 4.10. It is the current stable version of FreeBSD. 4.10 will give you a good idea of all that FreeBSD has to offer. FreeeBSD 4.10 is not outdated. It was released in May 2004 and includes gnome 2.6 and KDE 3.2.2.
The FreeBSD install is easy provided that you follow the documentation. If you don't have a second computer on which to view the installation guide, print it out.
I'm still amazed that 90% of consumers are completely oblivious
90% of consumers are completely oblivious that their monitor is running at 60Hz.
The only siliness here is your post.
Ofcourse the professor is going to use her discretion with students who can not vote. Obviously if you thought of this problem so did she.
For other students, it might be quite a morass to figure out if they can vote
I will give you the benefit of doubt and assume that you have not attended a university, or the one you did attend wasn't very good. A good university professor is always more interested in the methods used to achieve a goal then the actual goal itself. In other words: showing your work is more important then the correct answer. Now I know it is hard to find good professors. Indeed they are probably a minority. However this professor has shown that she thinks outside of her field and beyond the classroom. This is a pretty good indication that this professor is at least "decent." It is probable that if one of her students can not vote, and can explain why, then that student will recieve full marks.
I am disapointed by the negative attitude towards this professor. She should be congradulated for encouraging others to think about voteing.