Search found 276 matches

by fancontrol
Thu Sep 21, 2006 11:38 am
Forum: Fans and Control
Topic: Fan controller with display
Replies: 7
Views: 3376

Re: Fan controller with display

If only someone would market a really ugly fan controller with decent features... Agreed. I like my t-bal so far, but it does need software to configure. Been there . ...might go back, actually. This time I'm going to use it to control the environment in my closet (NAS, Router, Modem, etc.). Mostly...
by fancontrol
Wed Sep 20, 2006 9:51 am
Forum: General Gallery
Topic: Apprentice_GM PC silencing project
Replies: 6
Views: 5180

#1 is as good as any, and certainly the best to fabricate. Keep in mind that thickness and type of material makes a difference, particularly for fins that large. Think of the fin as a pipe for the heat. If you use a small pipe, the heat will have trouble getting to the outermost surfaces. Gut feel s...
by fancontrol
Tue Oct 05, 2004 11:15 am
Forum: Cases and Damping
Topic: Is smaller better for airflow?
Replies: 4
Views: 1661

I think shape is more important than size. In a smaller case of the same layout, the 'heat pockets' will only get smaller. That in turn will decrease their thermal mass and ability to conduct; the machine will be hotter. Before you start switching cases, consider spending time with a manilla folder,...
by fancontrol
Tue Sep 28, 2004 12:11 pm
Forum: The Silent Front
Topic: PC control over Cat5
Replies: 3
Views: 1231

PC control over Cat5

Remember this ? Well, I just can't let it die. Today I found an article from intersil about how to use their parts to send video over cat5. It looks like I can sample most of the parts, so I'm thinking I might be able to build one (or three) of these things. The trick is keyboard and mouse. The vide...
by fancontrol
Tue Sep 28, 2004 11:51 am
Forum: Fans and Control
Topic: Is there a Full-On/Full-Off Thermostat-type Circuit?
Replies: 21
Views: 5621

My ears were burning so I thought I'd check in. It sounds like you've got all the info you need from cpemma's post. The only difference in my design was using a p-fet to switch the fan. That way i could put a big 'ol resistor across the fet to have the fan switch to low speed (instead of off) and no...
by fancontrol
Fri Aug 13, 2004 10:21 am
Forum: The Silent Front
Topic: Real silence - move your PC to another room!
Replies: 126
Views: 110555

scalar, cool stuff. The attraction of Cat5 to me is that it is already run through the house and can serve multiple functions as things evolve (phone, ethernet, ethernet phone, phony ethernet, etc.)
by fancontrol
Sun Aug 08, 2004 1:56 pm
Forum: Fans and Control
Topic: How to make RPM Signal for 2-Wires Fan
Replies: 77
Views: 66650

It's worth a shot. The size of the spike changes with fan & voltage (and, thus, fan speed), however. You may find that the 'spike threshold' needs to vary with fan voltage. In that case you may need to run the dividers on the same branch as the fan.

Try it. Let us know how it works out.
by fancontrol
Thu Aug 05, 2004 6:21 am
Forum: System Advice / Troubleshooting
Topic: Low power network storage
Replies: 9
Views: 6240

I agree with going used. 1GHz is way more than you need unless you are running database apps or somesuch. Plus you've already got all the stuff that wears out; there's no risk. You could probably get started for less than $100. I took some quick snaps of the NAS-esque machine hanging from my ceiling...
by fancontrol
Wed Aug 04, 2004 3:29 pm
Forum: Fans and Control
Topic: Do any of you true silent junkies run any fan @ 12 volts?
Replies: 12
Views: 3113

I have two fans in my closet system that run at 12V.

They're 24V fans ;)
by fancontrol
Wed Aug 04, 2004 1:11 pm
Forum: Off Topic
Topic: Desktop ScreenShots
Replies: 91
Views: 35238

nevermind the OS stuff, here is the current image of choice. Thanks to explodingdog.com
by fancontrol
Tue Aug 03, 2004 12:42 pm
Forum: Fans and Control
Topic: How to make RPM Signal for 2-Wires Fan
Replies: 77
Views: 66650

just from memory, it's something like this http://home.austin.rr.com/segerstrom/fwf/tach.jpg J1 is fan, J2 is PC R1 is a current shunt, C1 shifts the level up to something the comparitor can deal with (nominally set by R4 & 5). R2 & the pot R3 set the tach threshold. If you've got a scope, start wit...
by fancontrol
Mon Aug 02, 2004 6:37 pm
Forum: The Silent Front
Topic: Real silence - move your PC to another room!
Replies: 126
Views: 110555

If they were ethernet I imagine they would cost even more. With Cat5 you do get 4 UTPs, that helps. I think the gonzo settings you mention require 2 cables as well. It's kinda lame that they decode the analog signal only to recode it again. It seems more elegant to me to have a graphics card that sp...
by fancontrol
Fri Jul 30, 2004 1:29 pm
Forum: The Silent Front
Topic: Real silence - move your PC to another room!
Replies: 126
Views: 110555

Holy smoke. In this case I almost wish I had not searched the forums first. But, here goes: I already have a PC in my office closet (along with the cable modem & router). Cat5 runs all over the house, including to a hub on the desk that goes to my wife's PC, the printer, and any other gizmo that I n...
by fancontrol
Wed Jul 28, 2004 7:25 am
Forum: System Advice / Troubleshooting
Topic: Back-of-LCD variable power consumption PC
Replies: 12
Views: 5480

rather than mess with bolting stuff onto your display, why not replace the books holding your monitor with a PC? And, if the black box on the bottom shelf is a sub, getting a smaller pc won't help that much.

but who am i to rain on your ambition?
by fancontrol
Sun Jul 18, 2004 3:28 pm
Forum: Power Supplies
Topic: Q: using PS for slot cars?
Replies: 2
Views: 995

The ATX spec requires a minimum load for a supply to run, and it's not trivial--something like 2A on the 5V line, something else for +3.3 and +12. Look it up at formfactors.org. In the 'black box' I made to use a power supply for bench use I put resistive loads (and the corresponding fan) to make su...
by fancontrol
Wed Jul 14, 2004 11:22 am
Forum: Power Supplies
Topic: Quieting a strange server power supply
Replies: 2
Views: 960

Page 77 says there's a system setup category that "Sets the fan to full speed or a lower, noise reduction speed." Have you tried it? Page 18 shows the power supply has "Pin 21 — Thermal fan-speed control (TFSC) is a power-supply input signal used to control power-supply fan speed in special applicat...
by fancontrol
Wed Jul 14, 2004 9:32 am
Forum: System Advice / Troubleshooting
Topic: Extremely low power and quiet pc
Replies: 11
Views: 6887

Almost as easy as making up answers!
by fancontrol
Tue Jul 13, 2004 2:42 pm
Forum: Fans and Control
Topic: new fan standard -> i'm giddy!
Replies: 7
Views: 3075

I see a few problems with this proposed standard. The first is that the fan becomes more expensive. I'll bet most of the cost will be in the wire; the new style just reshuffles the components in existing fans. Fan mfgr's blew it when they didn't put the header on their part and forced someone else ...
by fancontrol
Tue Jul 13, 2004 12:45 am
Forum: Fans and Control
Topic: new fan standard -> i'm giddy!
Replies: 7
Views: 3075

new fan standard -> i'm giddy!

Anyone fan-nerdy enough to read about the new 4-wire fan (no, not the big clunky molex variety) standard? Intel is behind this one, too. a taste of the future . The bottom line is they seperate PWM from tach, so the PWM frequency can be much (1000x) higher while still getting good tach signals. Also...
by fancontrol
Mon Jul 12, 2004 10:31 pm
Forum: Power Supplies
Topic: How to completely drain a power supply...
Replies: 42
Views: 99243

Shorting the green (PWR_ON) wire with a black (GND) wire on the ATX header will force the power supply to try and turn itself on. A paper clip does the job nicely. If the supply is unplugged the caps will drain to safe levels quickly. This, to me, is a better bet than the push-the-button-over-and-ov...
by fancontrol
Mon Jul 12, 2004 10:12 pm
Forum: System Advice / Troubleshooting
Topic: Extremely low power and quiet pc
Replies: 11
Views: 6887

Most, if not all, of the information you're after is already in the forums. Read the 'sticky' threads in the areas you care about (e.g. power supplies, fans & control) and you'll learn a lot. From there a few good searches will get you a lot more. Once you have a handle on the information that's out...
by fancontrol
Mon Jul 12, 2004 8:43 am
Forum: Power Supplies
Topic: DC Wall Supply?
Replies: 22
Views: 5631

I was waiting for the part where you shove an allen wrench in the chuck of the drill and crank it around as a generator.

I'd like to see someone show up at the airport with an Antec ARIA under one hand and a car battery under the other.
by fancontrol
Mon Jul 05, 2004 7:28 pm
Forum: Power Supplies
Topic: DC Wall Supply?
Replies: 22
Views: 5631

Neat idea. We use 'built in' transformers for home low-voltage lighting installations all the time (halogen bulbs are typically 12V). http://electronictransformer.com/cgi-bin/app.cgi?pg=store for example. Here's the rub: the lower the voltage the higher the losses in the line. That's why power is di...
by fancontrol
Thu Jul 01, 2004 7:02 pm
Forum: Fans and Control
Topic: FAN power from USB
Replies: 19
Views: 7591

if they could do that do bowling balls, then they wouldn't need the fan on the end of the ball-return thing. maybe the next big thing will be a mouse with a TEC and cooling fins. When you hold down both mouse buttons the scroll wheel adjusts the temperature. i kid, only. i admire all the folks out t...
by fancontrol
Thu Jul 01, 2004 11:40 am
Forum: Fans and Control
Topic: FAN power from USB
Replies: 19
Views: 7591

yuck. i'd vote to tap power off the wall-wart for the cable modem.
by fancontrol
Thu Jul 01, 2004 6:02 am
Forum: Power Supplies
Topic: Fooling Dell
Replies: 24
Views: 6908

I ordered samples of the MM74C906 from fairchild, should be able to whip up a ~150 Hz ( = 4500 RPM) generator without much trouble once they show up. Two resistors and a cap should do it. But, then, by the time the parts have shown up I will loose interest and the thread will die. Whatever... //edit...
by fancontrol
Wed Jun 30, 2004 7:32 pm
Forum: Cases and Damping
Topic: SV25 dead, so new PSU or new case?
Replies: 4
Views: 1558

I ended up getting a case. Mini-tower, 300W supply, $10 after rebate from Fry's! I'm certain that I got what I paid for. The thing must be made of 20ga steel. I think if I punched it my hand would go though. The good news is I was able to mount a 2nd drive (noisy old 2.5", but spun down most of the ...
by fancontrol
Wed Jun 30, 2004 7:07 pm
Forum: Power Supplies
Topic: Fooling Dell
Replies: 24
Views: 6908

Would it be possible to make a small oscilator to fool the motherboard sensor? I'm sure a simple 555 ic application would do the job. I was just thinking that. If you don't care what speed gets reported, just make something to fake it out. I'd lean toward using an open-collector inverter package wi...
by fancontrol
Sun Jun 27, 2004 10:58 am
Forum: Fans and Control
Topic: Your opinion about fan speed algorithm plugin for speedfan?
Replies: 9
Views: 11818

My hope in building controllers is that people would take advantage of the relatively simple set of commands (sent via serial port) and develop their own top layer stuff. Over time and iterations it could develop into something really neat. Didn't happen. At all. I wonder if the guys don't want to g...
by fancontrol
Fri Jun 18, 2004 8:47 am
Forum: CPU Cooling
Topic: My CPU Duct (Pictures!)
Replies: 36
Views: 26975

Nope, I hadn't seen that -- but the text in that first link is a little confusing and appears to suggest that the CPU can be cooled passively! The PDF says that CPU HS fans are still required. That's probably related to their requirement(?) that the duct be seperated from the CPU by 1/2" or more. I...