I'm getting my MAX232 tomorrow in the mail. Just want to make sure this schematic will work...

EDIT: Ardu RX should be on Max 12

I would say the biggest tell is the price.

http://www.ebay.com/itm/Arduino-UNO-Original-Made-Italy-Ships-Same-Day-/200558405814?pt=Laptops_Nov05&hash=item2eb23668b6#ht_734wt_1219

I'm building a covert GPS data logger with the Arduino Uno. Is any information that could reveal one's identity loaded to the Arduino when loading sketches?

I've been playing around with some nichrome wire (32ga) to make electrical igniters.

Is there any way to quickly connect the nichrome wire to the supply wires, like a header or something like that? (I've been soldering them together)

So if I were to use a MAX232 what would the schematic need to look like? I know that the radar draws 1A @ 12v.

I found this one, I suppose all I need to modify is to connect pin 1 on the DB9 to +12v?
And are those all Electrolytic capacitors?

I got a Decatur Si-2 Radar from Ebay. The brochure that I found online has this as the pinout:

Code:

   +12VDC Power      1 (red)
    RS232 TX 2 (black)
    RS232 RX 3 (green)
    Ground(shield) 5 (brown)
    Ground 9 (black)

How should I hookup my Arduino to get the data, and do you think it will be readable?

Edit I also just found this:

I don't know how to convert to 1.8vdc

You don't know how to convert what to 1.8V? An umbrella? A frog? Perhaps an old canoe that sank?

and the datasheet says I need two capacitors.

Well, I guess you are out of luck then.

Thanks very helpful!

What do I need to change on this schematic to achieve that voltage, if I'm going to use the +5v pin on an Arduino Uno?

What do I need to hookup this gps module?

I don't know how to convert to 1.8vdc, and the datasheet says I need two capacitors.

http://www.sparkfun.com/products/10890
http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Sensors/GPS/GP-2106.pdf

What is the minimum voltage I can supply through the 2.1mm jack for the Arduino to operate.

How many amps can I draw through the 5v pin?

Thank you

Been thinking about building a MIRT(Mobile Infrared Transmitter).

I think I have the code right. I just need to choose the light/LEDs.
Do you think I should use a strobe light(with a visible light filter) or just use IR LEDs.

I have tested this with my Arduino Uno and 1 IR LED with my radar detector which also detects the MIRT and says "Emergency Vehicle".
The single 5mm 1.2VDC 100mA 940nm LED works from about 10-15 feet away but that is inside my house so atmospheric conditions may effect that result greatly.

Code:

int led = 2;

void setup() {
  pinMode(led, OUTPUT);    
}
void loop() {
  digitalWrite(led, HIGH);
  delay(35);
  delayMicroseconds(544);
  digitalWrite(led, LOW);
  delay(35);
  delayMicroseconds(552);
}

I bet you haven't been here...
http://www.mushroo.me/home/voxel-shield/voxel-shield-overview

Some code I wrote for individual xyz LED control.

Code:

// Shift Register pin assignments
int dataPin     = 2;
int clockPin    = 3;
int latchPin    = 5;
int masterClear = 4;

void led(int x,int y,int z,int hold){
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, 0b00000001 << z);
  if(y == 7){
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000001 << x);
  } else {
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000000);
  }
  if(y == 6){
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000001 << x);
  } else {
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000000);
  }
  if(y == 5){
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000001 << x);
  } else {
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000000);
  }
  if(y == 4){
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000001 << x);
  } else {
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000000);
  }
  if(y == 3){
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000001 << x);
  } else {
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000000);
  }
  if(y == 2){
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000001 << x);
  } else {
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000000);
  }
  if(y == 1){
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000001 << x);
  } else {
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000000);
  }
  if(y == 0){
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000001 << x);
  } else {
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000000);
  }
  digitalWrite(latchPin, HIGH);
  delay(hold);
}

void clean(int hold){
  digitalWrite(latchPin, LOW);
  for(int x = 0;x < 10;x++){
    shiftOut(dataPin, clockPin, MSBFIRST, 0b00000000);
  }
  digitalWrite(latchPin, HIGH);
  delay(hold);
}

void setup() {
  // Setup the pin modes
  pinMode(dataPin,     OUTPUT);
  pinMode(clockPin,    OUTPUT);
  pinMode(latchPin,    OUTPUT);
  pinMode(masterClear, OUTPUT);
 
  // Clear the shift registers
  digitalWrite(masterClear, LOW);
  delay(10);
  digitalWrite(masterClear, HIGH);
}

void loop() {
  //  x,y,z,delay
  led(0,0,0,100); //top left, bottom layer
  led(1,0,0,100); //top +1 left
  led(2,0,0,100); //top +2 left
  led(3,0,0,100); //top +3 left
  led(4,0,0,100); //top +4 left
  led(5,0,0,100); //top +5 left
  led(6,0,0,100); //top +6 left
  led(7,0,0,100); //top +7 left
  //   delay
  clean(100);
}

I'm currently building my cube, here is some thumbnails:

Hey,

I'm have purchased the new GoPro Hero 2, and I'm thinking about creating a custom bacpack for adding meta data (geotagging photos) with a gps module.

Do you think this is feasible? I have no idea what the expansion port on the camera is capable of and I haven't be able to find any info on it.

How do figure 64 on? I don't think you'd have more than 8 in one row (or column) of 1 layer.

8 of my shift registers are connected the 64 columns and 1 register controls the layers.
So if turn on all of the 64 columns and then tell the last register to light up layer 1 there will be 64 LEDs on.

Therefore 64*.02A = 1.28A so I suppose I need a FET, but I don't know which one.

Will this work: http://www.mouser.com/Search/ProductDetail.aspx?R=NUD3112LT1Gvirtualkey58410000virtualkey863-NUD3112LT1G

I will be using a 5vdc 2A wallwart to power the LED cube and Arduino.

So will this work? http://www.mouser.com/Search/ProductDetail.aspx?R=NUD3112LT1Gvirtualkey58410000virtualkey863-NUD3112LT1G