Ever seen one of these?
Well I had one laying around... SO I decided to have fun with it, and build something snazzy for my PC. All to be mounted on a 5.25in drive bay cover /biggrin.gif' border='0' style='vertical-align:middle' alt='biggrin.gif' /> /biggrin.gif' border='0' style='vertical-align:middle' alt='biggrin.gif' />.
This is the idea I had.
(<- switch in this corner)
5 LEDS in a line, with a normally open push button switch (to cycles through the led flashing sequences).
The flasher has 6 different flashing sequences, as follows.
(1 represents on, 0 off)
#1.) 1 1 1 1 1 (all leds on)
#2.) 1 1 1 1 1 (leds strobe at a moderate speed)
#3.) 1 1 1 1 1 (leds strobe at a slow rate)
#4.) 0 0 1 0 0 -> 0 1 0 1 0 -> 1 0 0 0 1 -> repeat (at a moderate rate)
#5.) 1 0 0 0 1 -> 0 1 0 1 0 -> 0 0 1 0 0 -> repeat (basically inverse of #4, same speed)
#6.) 0 0 1 0 0 -> 0 1 0 1 0 -> 1 0 0 0 1 -> repeat (same as 4 but very fast)
I chose to use the following led combination (left to right) White Orange White Orange White. Since I like these colours /smile.gif' border='0' style='vertical-align:middle' alt='smile.gif' />.
I desoldered the old leds and soldered in wires so I can power the new ones. Then I measured and marked the holes to be drilled in a 5.25in drive bay on the front of my PC.Drilled the holes and put the LEDs in and hot glued them in (yes hot glue is an awesome modders tool /smile.gif' border='0' style='vertical-align:middle' alt='smile.gif' />
. I drilled a hole for the NOPBS (normally open push button switch) and began a 30min journey with jewlers files to make the hole for the switch fit perfrectly. After that was done I soldered and heat shrunk the solder points for the LEDs and the switch. All is basically said and done... except one thing....POWER
The LEDs need ~3.0 volts (a 3.3V line on a PSU will work perfect), but the only problem is, how to get that power. I think there is a 3.3V line for SATA (Orange colour) but I don't have a female end connector for it. Maybe a resistor? HELP!
The thing is build, I just need power for it. I should have PICs on monday at about 2-3PM, so check back then.
I could use the 5V line from the PSU, but the resistor value I should use is somewhat sketchy.
The circuit uses about 200-300mA and at 5V thats R = V/I therefore R = 5/.200 or 5=.300 which yeilds about 25 ohms / 17ohms.
A confirmation would be nice. (5 leds, mfg. specified current draw unknown)
AMD X2 4200+ *** DFI NF4 Ultra-D (modded to SLi-D) *** eVGA 7950GT (with Zalman FC-ZV9)
January 16th was the day life changed... the day I bought WoW