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31  Community / Bar Sport / Sawpping out Resistances on: October 29, 2011, 12:33:18 pm
Well, after a lot of searching, I found out what the resistances in the iPad charger are. However, it seems that the resistances used don't exist in PHP form. And since I plan on using through hole resistors, that seems to be a problem.

I'm sure this is easy to figure out, but I can't seem to... Can anyone help me out, and tell me what common through hole resistance values to swap these out with? Also, I'm sure you noticed, but they're voltage dividers, so it's not so much the value that matters, as the output voltage.

32  Community / Bar Sport / Re: Which wireless printer server to buy? on: October 28, 2011, 12:40:33 am
I have an Airport Extreme for wifi, and an Airport Express as a print server. Works flawless, and easy to set up. I would say check out the airport express.
33  Community / Bar Sport / Re: Anybody have a CNC or Makerbot, and wanna help out a fellow Arduino addict? on: October 26, 2011, 02:23:25 am
Uhgg, all of the softwares they offer are so difficult to me... Time to learn I guess :/
34  Community / Bar Sport / Re: Your latest purchase on: October 24, 2011, 09:27:58 pm
Ruggeduino:



https://shop.ruggedcircuits.com/index.php?main_page=product_info&cPath=1&products_id=23

Overvoltage and overcurrent protection on all IO ports. Now that's what you want when you are testing!
I want one, but can't bring myself to spend $40 on it... Just 1 more reason for me to envy you -.-
35  Community / Bar Sport / Re: Anybody have a CNC or Makerbot, and wanna help out a fellow Arduino addict? on: October 24, 2011, 09:25:30 pm
Hmm, I knew about those sites, but I forgot about em. Thanks guys.
36  Community / Exhibition / Gallery / Re: RGB to White on: October 23, 2011, 04:10:28 pm
You really shouldn't be driving LED's directly from pins if they are high-brightness types.. you may want to use a switching transistor so that you can provide more current and potentially add more LED's...
They have 1k resistors, so they don't draw much power. When I use my LED strips, I will definately use some big beefy transistors. But for now, it's fine.

Also, I've found that the "whiteness" can be helped by PWM blending of white with the RGB.. allowing for more light output.  I typically put all the LED's (RGB+W) inside a semi-translucent shell, which helps blend the colors.  Ping Pong balls work well for this...
Well, I would just prefer to turn the RGB off completely, as to save some power. After all, when I do upgrade to strips, having both the RGB, and the White strip on full blast would require quite a big power supply.
37  Community / Exhibition / Gallery / RGB to White on: October 23, 2011, 03:53:11 pm
I know this is very basic, but I'm just started at getting back into Arduino. The main reason I'm posting this is so that the people who watch my video can see the code. Let me know what you think of this.

About the project: I am making some custom firniture for my room. I want to add some lighting to it. It is gonna be controlled by some pots, switches, ect. However, when you try to make white light with an RGB led, it is very impure. So what I'm gonna do is add pure white LEDs next to the RGB. This is how I plan to have it switch between the RGB, and the White LED.

Code:
int red = 11;    // Red lead of RGB attached to pin 11
int green = 10;  // Green lead of RGB attached to pin 10
int blue = 9;    // Blue lead of RGB attached to pin 9
int white = 8;   // White LED attached to pin 8

int redPot = 0;    // Pot for controlling red value attached to analog pin 0
int greenPot = 1;  // Pot for controlling green value attached to analog pin 1
int bluePot = 2;   // Pot for controlling blue value attached to analog pin 2

int redVal;    // Variable for storing the red value
int greenVal;  // Variable for storing the green value
int blueVal;   // Variable for storing the blue value

void setup() {               
 pinMode(red, OUTPUT);    // Red pin is an output
 pinMode(green, OUTPUT);  // Green pin is an output
 pinMode(blue, OUTPUT);   // Blue pin is an output
 pinMode(white, OUTPUT);  // White pin is an output
}

void loop() {
 redVal = analogRead(redPot);      // Reads the value of the Red Pot, and stores the value in Red Val
 greenVal = analogRead(greenPot);  // Reads the value of the Green Pot, and stores the value in Green Val
 blueVal = analogRead(bluePot);    // Reads the value of the Blue Pot, and stores the value in Blue Val
 
 redVal = map(redVal, 0, 1023, 0, 255);      // Maps Red Val to fit the perameters of PWM
 greenVal = map(greenVal, 0, 1023, 0, 255);  // Maps Green Val to fit the perameters of PWM
 blueVal = map(blueVal, 0, 1023, 0, 255);    // Maps Blue Val to fit the perameters of PWM
 
 if(redVal >= 250 && greenVal >= 250 && blueVal >= 250){  // If Red Val, Green Val, and Blue Val are all equal to or above 250
  digitalWrite(red, LOW);                                 // Turn the Red Pin off
  digitalWrite(green, LOW);                               // Turn the Green Pin off
  digitalWrite(blue, LOW);                                // Turn the Blue Pin off
  digitalWrite(white, HIGH);                              // Turn the White Pin on
 }
 else{
  analogWrite(red, redVal);      // PWM the Red Pin to the value of Red Val
  analogWrite(green, greenVal);  // PWM the Green Pin to the value of Green Val
  analogWrite(blue, blueVal);    // PWM the Blue Pin to the value of Blue Val
  digitalWrite(white, LOW);      // Turn the White Pin off
 } 
}
38  Community / Bar Sport / Anybody have a CNC or Makerbot, and wanna help out a fellow Arduino addict? on: October 23, 2011, 03:44:18 pm
Hay guys. Just wondering, is there anyone in Arizona who owns a CNC milling machine, or a MakerBot who would be willing to help me out?

Also, it doesn't "have" to be in Arizona, but if your too far away, we would have to do it through IM or emal.

Anyhow, what I'm looking for is someone who can either CNC me a tiny piece of Plexiglass, or if it's a MakerBot, form me a little control panel. I'm trying to make a small panel to hold my USB ports and switches for a project.

If you have either of these, please let me know how much it would cost for you to make me a little switch panel. I need this done, but I don't have the proper tools to do so.
39  Community / Bar Sport / Re: Your latest purchase on: October 22, 2011, 11:43:12 pm
Jeremy, you must live in Arizona......there's just something about people there....
/facepalm... You live in arizona too... And yes, I do live in Gilbert, Az. And I beleve that the only one that can protect me is me. I will not wait for a LEO to respond to a call, I will take care of a life threatening situation. Hence the Saiga 12 shotgun on my wall, and the Glock 17 on my headboard... Both loaded. 

Anyhow, I just bought 2 cans of "Great Stuff" expanding foam. And indeed, it is great stuff!
40  Community / Bar Sport / Re: You know you are a tech geek when.... on: October 22, 2011, 06:53:12 pm
When you spend $500 on a computer JUST for coding...

When you own 10+ Arduino boards...
41  Community / Bar Sport / Re: Your latest purchase on: October 22, 2011, 06:18:32 pm
I agree with the choice of metals.  I think I will start doing the same.  I wanted to start storing aluminum because I can melt it into little bars with my torch and store it easily, and I can find it lying around.  However, the price of it is based on reclamation value and that can change with a little government intervention.  If things get any worse, I may look into serious quantities of LEAD also.
I have all the lead I need, in the form of ammunition. For when ever the government thinks they want to take my gold and silver from me.
42  Community / Bar Sport / Re: Your latest purchase on: October 21, 2011, 12:40:31 am
Gonna buy maybe 5 ounces of Silver. Start off a little stockpile of the stuff. May also buy some copper, cause it is a good metal to invest in, and it's cheap.
43  Community / Bar Sport / Re: Your latest purchase on: October 17, 2011, 11:52:34 pm
Bought 2 10 foot 4x4's. Also got 16 6" lag bolts. Next is some t-nuts. I am currently building myself a custom bed frame.
44  Community / Bar Sport / Re: Your latest purchase on: October 14, 2011, 02:35:32 am
Well, it (will) be this... http://ruggedcircuits.com/html/ruggeduino.html

Not even I could blow it up smiley
45  Community / Bar Sport / Re: Transistor Resistor Calculating on: October 09, 2011, 01:18:46 pm
Well, I have no clue what the fan controller uses. The case is a NZXT Phantom, with a built in fan controller. I don't even have the case yet, and if I did, I don't have an o-scope to check the output. I assume it's true analog, because I think it uses slider pots.

The bottom line is that the fan controller goes 0-12 volts, at a max of 20 watts.

I need to up that to 0-12 volts at about 2 amps. I have no clue what watts that is.

I need to know how to hook up a transistor to the fan controller, so that the voltage will be the same, but the amperage is higher.
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