Here comes a bit of a random update ...
I recently had to build my pc because I wanted to go to a lan. So I fitted a fan into the back of the case, it is a Coolermaster fan that came with the case and I am going to sleeve the cable when I get time for that, this is what it looks like:
A while back hyujmn asked where I got the grommet, but as I live in South Africa my answer wasn't very useful. I have however taken a photo of a small bit of grommet that I cut off what I had left to show what the profile looks like:
Onwards with some things that I have purchased, Demciflex filters for the bottom of the case and the front:
I managed to get my hands on some mesh, it is 0.8mm thick with 2.5mm holes. It is still covered in dirt and oil from when it was delivered earlier today and I am going to leave it as it is as I am not sure how I am going to store the metal to prevent rust, but this is what it looks like:
I got some electronics, connectors and stuff for my attempt at making a fan controller:
My current iteration of what my pcb looks like in Eagle:
As I am not that familiar with Eagle I still need to sort out the manner in which it auto routes the traces, or manually route some traces, as I do not like the way in which it is routing @ 45 degree angles. I also need to adjust the trace thickness to provide sufficient copper for the current to pass through. There is space for two LM317s ICs, both of which are rated for 1.5 Ampere, with three fan headers and a extra header to which I intend to connect a trimmer or pot to adjust the voltage. The other trimmers are there so that I can fine tune the circuit, but these can be replaced with resistors if I want to. All of this will be powered from a molex connector which will plug in on the left hand side of the board.
What one of my desks looked like while I was busy messing with a circuit:
The LM317 is quite capable of powering Gentle Typhoons from 5 to 12 Volts, but the Sickleflows are another story. Due to the current requirements of the Sickleflows, the "Dropout Voltage" of the LM317 comes into play. I do not know that much about electronics, but I will attempt to explain: the consequence of a Dropout Voltage is that when a reasonable amount of current passes through the voltage regulator there is a limit to how close the output voltage can come to the input voltage. For my planned circuit my input voltage will be 12 Volts and due to a Dropout Voltage of 1 to 2.5 Volts the closest that my output can get to the input is roughly 9.5 Volts. In order to have a voltage regulator that outputs 5 to 12 V I would have to have an input of at least 14 or 15 V, but in this case the Dropout Voltage does not bother me as at 10 V the Sickleflows are still quite loud and I will probably be running them between 5 and 9 V in any case.
I also bought a pair of switches, black with white rings. A 16mm and a 19mm momentary, I am not sure which one I am going to use but I will probably use the 19mm for the power button.
A better photo can be seen on the product's official page, here
Lastly, one piece of the more ambitious aspect of this mod ... an XSPC RS360: