Build your own fancontroller
Built and written by Håvard "katmai" Hanssen
Published 16 September 2000
Before You Start
This Guide will show you how to make a dualvoltage fancontrol for 5 fans, with dualcolor LEDs to indicate the voltage. We also include a power on/off swich for the fancontrol with a blue LED. Before you start, you should know that this may be a bit hard if you haven't soldered before. I used approx 6 hours from start to finishing, by mounting it into the case. I am 17, and have no electrical education, but I have done this kind of low-voltage work before.
Tools And Parts
All the parts were bought at ELFA. They ship your order, but you can also visit their store at Sandakerveien 76, Oslo, Norway. I guess Radioshack will be the shop for you Americans. You can find the ELFA productnumbers at the end of this guide.
Parts required (numbers are for identifying on the pictures)
A faceplate from an empty bay on your PC.
A plastic box. It must fit closely into the backside of your faceplate.
Five switches with three positions (on/off/on). Three connectors at the back.
One switch with two positions (on/off). Two or three connectors at the back.
Five dualcolor LEDs. We used red/green. Three connectors. 2.1V
One blue LED. Two connectors. 2.1V
Holders for the LEDs. Mine are handy click-on plastic ones.
Resistors. 11 x 1000 Ohms (any wattage) and 5 x 33 Ohms (3 watts).
10 diodes. Theese let power flow only one way, and not back.
Five male molex connectors.
One female molex connecor.
Approx 2m wire. Most wires can handle 0,5 Amps at 12 volts.
Tools
Ruler, pencil and rubber
Drill with 1mm and 6.5mm drillheads
Any soldering iron
Any soldering paste
Pliers for cutting, stripping and twinning the wire
A chisel
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