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05-04-2011
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#71 |
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Apprentice
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hello killerbug check my pm
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05-05-2011
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#72 |
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Senior Member
 
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I answered you, but please post in the thread so that others can take advantage of the knowledge.
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05-05-2011
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#73 | |
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come on spill it out |
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05-05-2011
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#74 |
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Senior Member
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It was about the components; Arnold101 could not find the parts listed in his country. For fat consoles, the MC7805CT can serve as the voltage regulator. If you cannot find the L4931CZ33-AP, then the MC7805 can work (WILL NOT WORK WITH SLIM CONSOLES). The other component was the diode; there are at least 1,000 different part numbers that will work here; just about any rectifier diode that is small enough to fit on the board will work. The diode that he found was a 1n4007, and that should work just fine. If you are like me and you keep old electronics to cannibalize, just about any diode that is all black except for a white line on one end should work...old power supplies and cable/sat boxes are full of these.
Of course, always test the output with a multimeter..even when using the specified parts. If you are using a 5V vreg, the voltage range should be from 0.42V to 4.58V...if you are using a 3.3V vreg, the range should be 0.28V to 3.03V. If you are using some voltage regulator between 3.3 and 5.0, take the rated output and divide it by 12 to get the "low speed" voltage...then multiply that by 11 to get the "high speed" voltage. These readings are just to give you an idea if you did it correctly; a multimeter cannot read the PWM signal, only voltage...the fan really only cares about the PWM signal. Unless the voltage is so high that it damages the circuit or so low that it does not activate the circuit, the fan does not care how much voltage there is; only the percentage of time that it is on a high pulse.
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05-06-2011
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#75 |
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Location: California
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Just an update for the 20gb ps3 fan. I swapped the fan with another one of the same model, and your circuit works perfect. I think there something on the fan pcb was either fried or not working correctly. Thanks for this tutorial Killerbug. The control is a lot better than just a pot by itself.
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05-07-2011
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#77 |
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Member
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No problem. I'm not sure if you received my reply pm because it wasn't showing up in my "sent" folder but to answer your question I used a 5V voltage regulator.
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05-07-2011
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#78 |
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Apprentice
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yes sorry..now i have see that i have connected all wrong because i just see your schematic and pinouts number and position does not match with the official pinouts of the 555
 http://pfnicholls.com/electronics/555_pinout.png http://i678.photobucket.com/albums/v...ercolorful.jpg Last edited by Arnold101; 05-07-2011 at 06:05 AM. |
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05-07-2011
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#79 |
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Senior Member
Join Date: Apr 2010
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Pictures like that are the reason my guide is designed how it is; any novice electrical engineer would read the color image in the way it was intended to be read, but this is intended for people who just purchased their first soldering iron (it even tells you what soldering iron to buy, just in case you have not even gotten that far).
I would say to just follow the guide with all the pictures...as long as you follow every step to the letter, it should be good. So far only one person has not been able to fix their mistakes by combing through the guide for the bit they missed...read it carefully the first time, and it won't matter what pin is what or how the circuit works; it will come down to, "This goes here, that goes there, do this, do that, done" ...the hardest part of the entire job is making that C-shaped solder connection on the back; the rest is easy. BTW...I only speak English...if anyone would like to translate this guide to other languages, feel free...you can even use my images; just give me credit for the original, and let me know about it so that I can mirror it to my blog (I am slowly compiling everything relating to the PS3 fan all in one place).
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05-09-2011
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#80 |
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Anyone willing to sell a pre-made one of these? I bought a plug in device off of eBay about a year ago and it bumped my speeds up to around 40% all the time. Anyhow it stopped working a while back and my PS3 overheated and shut down. Anyhow I don't want to use it till I can get something like this installed but I don't have any soldering skills.
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