Joined: Nov 08, 2004 Posts: 571 Location: Georgia, USA
Posted: Fri Feb 11, 2005 2:22 pm Post subject:
If you want to get things hella cheap goto www.elexp.com
I spent about $20+shipping ($20 is minimum order) on about $90 worth of equipment I would have gotten from Radio Shack.
IT also has stuff you will NEVER find on radioshack. Like the Common-Collector transistor array Im using for my HDD Activity LED mod (more on that later). Resistors are hillariously cheap. You are better off getting them to send you a catalog cause they are still getting their site together, and you have to do old skool invoices. But his place ahs been around along time.
My Digital Electronis teacher orders all of his equipment from this place. Its a hardware nerd's dream!
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_________________ -Scourge "Rx = +/_\"
a.k.a. President Skroob
The electronic ninja.
Xbox v1.6
Xenium Ice XOS v2.3
Xtender: Stock HDD+300G+300G
BIOS: Evox M8_16+
Dash: UX
Shark2th Moderator
Joined: Nov 17, 2004 Posts: 5222 Location: Tennessee, USA
Joined: Nov 08, 2004 Posts: 571 Location: Georgia, USA
Posted: Fri Feb 11, 2005 8:32 pm Post subject:
HAHAHAHA LMFAO!!! _________________ -Scourge "Rx = +/_\"
a.k.a. President Skroob
The electronic ninja.
Xbox v1.6
Xenium Ice XOS v2.3
Xtender: Stock HDD+300G+300G
BIOS: Evox M8_16+
Dash: UX
jiggysmb Xbox-HQ Elite Member Xbox Version: Xbox v1.6 Modded: Xenium Ice
Joined: Aug 18, 2004 Posts: 488 Location: Baltimore
Posted: Sat Feb 19, 2005 11:20 pm Post subject:
Scourge - I have been wanting to do a Jewel ring that blinks with HDD activity & only found vague threads that never seemed to pan out.
From what info I collected, you run pin 39 to a common collector & that becomes the rings ground & then you get a low voltage positive source. what I dont understand is how a 5v/12v power source is used with such a small voltage ground... Do you just use a BIG resistor? Can you get a tut up or a diagram of how you accomplished the task? _________________ LED Rings $6 (doesnt include LEDs) LED ring pic
Scourge Xbox-HQ Freak
Joined: Nov 08, 2004 Posts: 571 Location: Georgia, USA
Posted: Mon Feb 21, 2005 12:10 am Post subject:
Well I saw that tutorial and began to design my circuit around that. But I have a problem with using the 12v line. Essentially if you use a 12V power source you just need a bigger resistor. For what you want to do that tutorial we have posted here should do you just fine. Pin 39 is your culprit. If you have an extender or would just rather not solder onto your IDE cable like I did you can locate pin39 on the bottom of the motherboard. I don’t know if you found it but the tutorial that we have here is right here:
What some of the other ones you are talking about say to do is to hook the negative side of the LED to pin 39 then a resistor between the positive side and a 5V source.
The HDD signal is low active, meaning when there is a signal of low the computer "sees" it as high, to put it in a simple fashion. Also logic circuits and especially transistors can sink more current than it can emit. Bur logic gates can sink less current.
So when pin 39 goes to a "low" condition the transistor sinks the current and the LED lights. Though it seems like it’s an easy solution I’m a little wary of sending a little over 4V into some ICs that I don’t know the specs to.
On the other hand the circuit I am working on does 2 things. HDD activity mod. I am using combo, blue-white LEDs. I wouldn’t be able to use the transistor array that is specified in that tutorial so I had to do some research and datasheet searching. But I found it and elexp carried it. The final circuit will run 20 dual color 3mm LEDs, for jewel, controller ports, and eject button. So that part is fine, but since I am going to have the controlling circuit under my jewel and I will have a few unused logic gates I’m going to see if I can build a motion sensing mod. Wave your hand over jewel once, box turns on. Anytime after that the DVD drive will eject (to prevent accidental turn offs). For all this I will have to etch some PCBs.
It will be about a month-month in a half I think till it’s done. I’m thinking of cutting 6 and selling the other five. _________________ -Scourge "Rx = +/_\"
a.k.a. President Skroob
The electronic ninja.
Xbox v1.6
Xenium Ice XOS v2.3
Xtender: Stock HDD+300G+300G
BIOS: Evox M8_16+
Dash: UX
jiggysmb Xbox-HQ Elite Member Xbox Version: Xbox v1.6 Modded: Xenium Ice
Joined: Aug 18, 2004 Posts: 488 Location: Baltimore
Posted: Mon Feb 21, 2005 1:53 am Post subject:
I saw a tut like that but it had a section for programming the IC. You had to build some Serial cable & use a prog to edit a mess of 2 digit numbers. Does the IC in the Xboxhq tut need programming?
I could also be confusing this with a IR mod I was going to attempt....its been a long weekend! _________________ LED Rings $6 (doesnt include LEDs) LED ring pic
Scourge Xbox-HQ Freak
Joined: Nov 08, 2004 Posts: 571 Location: Georgia, USA
Posted: Mon Feb 21, 2005 3:24 am Post subject:
No programming for that particular mod. That circuit used two kind of ICs. A Opto-coupler and a darlington trasistor array. A darlington transistor is 2 transistors basically hooked back to back, but its veiwed as a single component. That allows you to sink more current thru each transistor. That particular chip is used for something like printers so a small 3-5V signal can controll 12V hammers or lights.
As in the IR mod I havnt looked into that much as of yet. Though I have seen places that sell it ready to go if you are talking about the mod that lets you turn it on-off from the remote.
HAHA been buisy with a mod weekend? Ive been anxously awating my new WD 300GB Monster! Itll be here tomorrow afternoon. I feel like a child during christmas. _________________ -Scourge "Rx = +/_\"
a.k.a. President Skroob
The electronic ninja.
Xbox v1.6
Xenium Ice XOS v2.3
Xtender: Stock HDD+300G+300G
BIOS: Evox M8_16+
Dash: UX
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