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16  Using Arduino / Project Guidance / Re: Wireless Control System ON / OFF Arduino on: February 19, 2011, 09:12:47 am
http://cgi.ebay.com.au/DC-12V-Remote-Control-Wireless-Power-Switch-10A-Ship-/250759660428?pt=AU_Electronics_Accessories_Remote_Controls&hash=item3a6270c38c Try this, keyfob wireless power switch rated for 12 volts, just wire this to the external power plug and a supply and your in business.
17  Using Arduino / LEDs and Multiplexing / LED Driver on: February 19, 2011, 08:42:03 am
Hi all,

Just finishing up a project and I need to make a RGB backlight for a touchscreen. At the moment I have a single BlinkM MinM that is handling the colours fine, What I want to do is remove the LED off the MinM and use the data signals to light about 6 similar LEDs. I understand I will need some driver circuitry, Has anyone got any ideas that are compact in size? I have limited space. All LEDs will display the same color at the same time.
18  Using Arduino / Project Guidance / Re: Wireless Control System ON / OFF Arduino on: February 19, 2011, 06:38:47 am
I am unsure of your needs, are you looking for a wireless shield to turn something on and off wirelessly? or are you wanting to turn the arduino on and off wirelessly?
19  Using Arduino / Sensors / Re: Buttons, I2C, interrupts and port-expanders on: February 19, 2011, 06:32:09 am
I can see a few people that would love to use this sort of stuff in their projects. Thankyou.
20  Using Arduino / Sensors / Re: Rotary encoder troubles on: February 19, 2011, 06:30:26 am
Ah, Success at last.

Code:
void setup(){ //Initialise Encoder Pins
  pinMode (encoder0PinA,INPUT); //set pin as input
  digitalWrite(encoder0PinA,HIGH); //Pullup enabled
  pinMode (encoder0PinB,INPUT); //set pin as input
  digitalWrite(encoder0PinB,HIGH); //Pullup enabled
  attachInterrupt(1,getRot,FALLING); //Rotary encoder interrupt pin 1 is pin 3, interrupt triggers on the pin falling to 0
  Serial.begin(9600);
}

void getRot() {
  if (digitalRead(encoder0PinA) == LOW) {   // found a low-to-high on channel A
    if (digitalRead(encoder0PinB) == LOW) {  // check pin B to see which way turn is.
      encoder0Pos = encoder0Pos - 1;         // CCW
    }
    else {
      encoder0Pos = encoder0Pos + 1;         // CW
    }
  }
  Serial.println(encoder0Pos); //Send value to PC
}

void loop(){
  //do nothing here because we are using interrupts
}


Basically, the encoder is not standard, giving me erratic results when certain test cases were tested. I also added some hardware debouncing to the circuit too to make life easy.
21  Using Arduino / Sensors / Re: Rotary encoder troubles on: February 19, 2011, 05:25:05 am
I think i have an answer of sorts. I made a simple sketch in which the interrupt is triggered on CHANGE and set it to report the two pins status. This is the output turning it around one direction:
22  Using Arduino / Project Guidance / Re: HELP: New E-Textile DJ Project Questions on: February 19, 2011, 03:40:19 am
The bliptronics led modules he used are $4.90 each as well, butthese take care of most of the control issues and power supply
23  Using Arduino / Project Guidance / Re: HELP: New E-Textile DJ Project Questions on: February 19, 2011, 03:20:04 am
Number one, 1000 leds with rgb is equivalent to 3000 leds. At approx 35mA per led (off datasheet) thats 35x3000 = 10.5 amps of current for them all to be at white. At ebay wholesale prices, 1000 SuperFlux RGB LEDs are going for $420. that leaves you $80 for an arduino, all the 3000 channels of multiplexing and driver IC's as well as the wifi shield.
24  Using Arduino / Project Guidance / Re: BLDC hdd motor with ESC on: February 19, 2011, 03:14:01 am
It appears that your motor could be a stepper, other than that i have no idea.
25  Using Arduino / Project Guidance / Re: Advice needed on: February 18, 2011, 09:24:09 pm
My apologies, And i cant even find the one i was looking for either smiley-sad
26  Community / Website and Forum / Re: Solved tags on: February 18, 2011, 08:55:28 pm
That is precisely what I was thinking about.
27  Using Arduino / Project Guidance / Re: Advice needed on: February 18, 2011, 08:53:40 pm
http://www.sparkfun.com/products/10267 Thats a stepper controller thats fairly simple to use (does two steppers). Sparkfun also sells two compatible steppers as well. As far as the other pats go, try a serial LCD, it uses less pins and is easier to use.
28  Community / Website and Forum / [FEATURE REQUEST] Solved tags on: February 18, 2011, 08:52:10 am
Any chance of having a way of marking a post as solved? I am aware it is really good if you get indexed by google, and you search for an answer for something, if it comes up with lets say [Solved] in the link, you know you have a good chance of getting the info you want rather than seeing the same question asked a million times with no response. Also this will discourage people who havent read the topic from posting if they really don't have anything new to add.
29  Using Arduino / General Electronics / Re: Thermal Print heads on: February 18, 2011, 08:45:34 am
If you measure the actual printing area on the head, if its 2/3 of an inch, then likely you will have one pin for common and 20 segments of head that source current. Or one + pin and 20 current sink pins. IF it is either, one would guess that a shift register and some decent FETs could be used to control the unit.
30  Using Arduino / General Electronics / Re: Manufacturer of Wire to board connectors on the Ethernet shield on: February 18, 2011, 08:41:24 am
http://www.sparkfun.com/products/10007 Possibly these? This is a set that will do one entire Uno, all pins.
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