pwm control

nemaste · 05-15-2002, 08:27 PM

I just finished installing my PWM controller

http://www-personal.umich.edu/~kbernas/pwm.htm

token · 06-01-2002, 04:12 PM

wow ^^

I was just thinking of rigging up some switches to toggle each of my fans from off to 5 to 7 to 12 v maually. Needless to say; I found your project quite impressive

very cool

Brad · 06-01-2002, 07:28 PM

well....it's very complicated, what sort of amperage can it handle? How much would one cost?

webmedic · 06-05-2002, 12:12 AM

What all can it do exactly? I didn't read your whole site but ther were pictures of other things in there besides.

nemaste · 06-09-2002, 04:49 PM

token:
Thanks for your compliments. It really isn't that complicated; I learned everything I needed to know, designed it, & built it in under 1-week. I only took one circuits course in college & most of that material I couldn't remember without review. I also have no professional experience in electronics.

Brad:
It handles 4A. The details including costs are on my updated site:
PWM Homepage

webmedic:
It adjusts the speed of fan(s) according to the temperature of a probe, displays the speed of the fan in 10% increments, has an RPM monitoring passthrough, & has a switch that switches the fan from the thermal speed control to 12V (manual full speed override switch). The switching for the override can also be done by a Digidoc. The speed control is accomplished using PWM (Pulse Width Modulation). A power MOSFET fan output makes the speed controller very efficient & capable of driving up to 4A of fans (or a single 4A fan, which I have not been able to locate yet :P).

webmedic · 06-09-2002, 04:58 PM

Do you still have any floating around? I wouldn't mind geting one.

WebMasta33 · 06-09-2002, 05:35 PM

You speak of this "DB crimp tool".... Mind posting a picture?

nemaste · 06-13-2002, 10:38 AM

Yes, I always have kits & PCBs for sale. I currently have a few pre-built units left over too. Please check out my PWM project homepage for updated details including info on kits, PCBs, & pre-builts for sale (pre-built unit prices may be negotiable for reviewers with websites):

PWMadness Homepage

I got the crimping tool I mentioned here: Crimper Tool @ Jameco

It makes very clean crimps that look machine made.

Brians256 · 06-14-2002, 04:52 PM

OK, I've been partially AWOL for a while now, but I have to say, nice job! I like your implementation, especially the display.

The one thing that I would prefer is something like psylence's stuff where he used a PIC chip to display temperatures, RPM's and other stats onto an LCD. But, that's considerably more effort, I think. Oh, and more expensive too.

nemaste · 06-15-2002, 08:41 AM

i've been longing to learn microcontrollers for a while now, but i'm out of college so it would take considerably more effort for me to fit a class in. i've been trying to get in on a few microcontroller based projects to learn on the fly, but no luck yet.

do you have a link to psylence's things?

Some of the folks at Gideon Tech are working on a software interface for a microcontroller circuit that is supposed to be an all inclusive PC mechanical management system. It will read temperatures, control fans, pumps, & stepper motors, & provide a GUI to read & log data & make adjustments. I've been dreaming about designing something similar, so I offered my humble related skills in hopes of learning from the project, which seem to still be at its early stages.

Brians256 · 06-18-2002, 06:09 PM

Here is psylence's sig from another un-named forum:

Pretty! http://www.veys.com/nick/case_mods.shtml
Sexy! http://www.veys.com/nick/custom_electronics.shtml
Sleek! http://www.veys.com/nick/electronics_tutorials.shtml

As for the stuff on GideonTech, I'll have to browse on over and take a look. Sounds interesting!

Microcontrollers are EASY if you can do a PWM circuit and do simple programming. That's what they are for. There is a great wealth of info out on them if you just do a simple web search. Sample programs, kits, sample circuits, huge archives of email exchanges (search for the PIC list), etc...

nemaste · 06-21-2002, 05:10 PM

thanks brian.

nemaste · 07-05-2002, 03:01 PM

just wanted to say the PWM page is temporarily offline & won't be back up for a month or 2. sorry

05-15-2002, 08:27 PM	#1
nemaste Cooling Neophyte Join Date: May 2002 Location: CA Posts: 78	pwm control I just finished installing my PWM controller http://www-personal.umich.edu/~kbernas/pwm.htm __________________ StrongShockModz

06-01-2002, 04:12 PM	#2
token Cooling Neophyte Join Date: Mar 2002 Location: North east usa Posts: 7	wow ^^ I was just thinking of rigging up some switches to toggle each of my fans from off to 5 to 7 to 12 v maually. Needless to say; I found your project quite impressive very cool __________________ i should be doing somthing constuctive, but this is mo'fun!*#!!$&

06-01-2002, 07:28 PM	#3
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	well....it's very complicated, what sort of amperage can it handle? How much would one cost? __________________ 2x P3 1100's at 1400, Abit VP6, 2x Corsair 256mb PC150 sticks, 20gb 'cuda ATA-III, 2x 40gb 'cuda ATA-IV in raid 0. 20" Trinitron. No fans 2x 2400+ at 2288mhz (16.0 x 143), Iwill MPX2, 2x Kingmax PC-3200 256mb sticks, 4x 20gb 60gxp in Raid 5 on a Promise SX6000. Asus Ti4200 320/630. Cooled by Water

06-05-2002, 12:12 AM	#4
webmedic Cooling Savant Join Date: Dec 2001 Location: Cheney, Wa Posts: 367	What all can it do exactly? I didn't read your whole site but ther were pictures of other things in there besides. __________________ www.water-cool.com

06-09-2002, 04:49 PM	#5
nemaste Cooling Neophyte Join Date: May 2002 Location: CA Posts: 78	token: Thanks for your compliments. It really isn't that complicated; I learned everything I needed to know, designed it, & built it in under 1-week. I only took one circuits course in college & most of that material I couldn't remember without review. I also have no professional experience in electronics. Brad: It handles 4A. The details including costs are on my updated site: PWM Homepage webmedic: It adjusts the speed of fan(s) according to the temperature of a probe, displays the speed of the fan in 10% increments, has an RPM monitoring passthrough, & has a switch that switches the fan from the thermal speed control to 12V (manual full speed override switch). The switching for the override can also be done by a Digidoc. The speed control is accomplished using PWM (Pulse Width Modulation). A power MOSFET fan output makes the speed controller very efficient & capable of driving up to 4A of fans (or a single 4A fan, which I have not been able to locate yet :P). __________________ StrongShockModz

06-09-2002, 04:58 PM	#6
webmedic Cooling Savant Join Date: Dec 2001 Location: Cheney, Wa Posts: 367	Do you still have any floating around? I wouldn't mind geting one. __________________ www.water-cool.com

06-09-2002, 05:35 PM	#7
WebMasta33 Cooling Savant Join Date: Dec 2001 Location: Nebraska Posts: 526	You speak of this "DB crimp tool".... Mind posting a picture? __________________ ========== --Soyo KT333 DRAGON Ultra (Platinum Edition) --AMD 1.4 @ 1.54 (11x) --768mb of PC2100 (@140FSB) --Asus v8200 GeForce3 @ 210/490 --Maxtor 40gb Quiet + 2 IBM 40gb 60GXPs (removable) + 8gb WD --Audigy --Maze 3, DD Gf3 block, 2x BIX, Eheim1250 ===========

06-13-2002, 10:38 AM	#8
nemaste Cooling Neophyte Join Date: May 2002 Location: CA Posts: 78	Yes, I always have kits & PCBs for sale. I currently have a few pre-built units left over too. Please check out my PWM project homepage for updated details including info on kits, PCBs, & pre-builts for sale (pre-built unit prices may be negotiable for reviewers with websites): PWMadness Homepage I got the crimping tool I mentioned here: Crimper Tool @ Jameco It makes very clean crimps that look machine made. __________________ StrongShockModz

06-14-2002, 04:52 PM	#9
Brians256 Pro/Staff Join Date: Oct 2001 Location: Klamath Falls, OR Posts: 1,439	OK, I've been partially AWOL for a while now, but I have to say, nice job! I like your implementation, especially the display. The one thing that I would prefer is something like psylence's stuff where he used a PIC chip to display temperatures, RPM's and other stats onto an LCD. But, that's considerably more effort, I think. Oh, and more expensive too.

06-15-2002, 08:41 AM	#10
nemaste Cooling Neophyte Join Date: May 2002 Location: CA Posts: 78	i've been longing to learn microcontrollers for a while now, but i'm out of college so it would take considerably more effort for me to fit a class in. i've been trying to get in on a few microcontroller based projects to learn on the fly, but no luck yet. do you have a link to psylence's things? Some of the folks at Gideon Tech are working on a software interface for a microcontroller circuit that is supposed to be an all inclusive PC mechanical management system. It will read temperatures, control fans, pumps, & stepper motors, & provide a GUI to read & log data & make adjustments. I've been dreaming about designing something similar, so I offered my humble related skills in hopes of learning from the project, which seem to still be at its early stages. __________________ StrongShockModz Last edited by nemaste; 06-15-2002 at 08:50 AM.

06-18-2002, 06:09 PM	#11
Brians256 Pro/Staff Join Date: Oct 2001 Location: Klamath Falls, OR Posts: 1,439	Here is psylence's sig from another un-named forum: Pretty! http://www.veys.com/nick/case_mods.shtml Sexy! http://www.veys.com/nick/custom_electronics.shtml Sleek! http://www.veys.com/nick/electronics_tutorials.shtml As for the stuff on GideonTech, I'll have to browse on over and take a look. Sounds interesting! Microcontrollers are EASY if you can do a PWM circuit and do simple programming. That's what they are for. There is a great wealth of info out on them if you just do a simple web search. Sample programs, kits, sample circuits, huge archives of email exchanges (search for the PIC list), etc...

06-21-2002, 05:10 PM	#12
nemaste Cooling Neophyte Join Date: May 2002 Location: CA Posts: 78	thanks brian. __________________ StrongShockModz

07-05-2002, 03:01 PM	#13
nemaste Cooling Neophyte Join Date: May 2002 Location: CA Posts: 78	just wanted to say the PWM page is temporarily offline & won't be back up for a month or 2. sorry __________________ StrongShockModz

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