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46  Using Arduino / General Electronics / Re: Mosfet drain-source voltage on: December 22, 2013, 08:28:24 pm
It's not so much the temp of the heatsink to be concerned with, it's the heat build up at the junction of the LED and the heatsink.
You said you have an " active processor cooler" what temp is it set to activate at? Is it liquid or passive? Just curious.
47  Using Arduino / General Electronics / Re: Mosfet drain-source voltage on: December 22, 2013, 06:49:06 pm
Fungus says he runs his eBay LEDs at 50-60%, I also follow that rule.
Specs I found on these 100w RGB chips says:
Red: 18-24V or Red: 25-28V
Green: 30-36V
Blue: 30-36V
DC Forward Currect (IF) : 1000mA
So run them at 500mA and they will have a lower forward voltage.
Running LEDs at their max rated forward current will produce unwanted behavior and heat, doing this on a high
powered chip will produce much more visible problems.
Also I would recommend a fan on the heatsink if you plan on having this on for extended periods of time.
48  Using Arduino / General Electronics / Re: Mosfet drain-source voltage on: December 22, 2013, 01:03:58 pm
The MOSFET LED driver you show in the pic has current swing as the temp. rises.
49  Using Arduino / Project Guidance / Re: Advice on programming. on: December 22, 2013, 12:43:23 pm
Just playing abit.  smiley-wink
tronixstuff
JeremyBlum.com
Arduino Your Home & Environment
Freeduino A good site of links.
50  Using Arduino / Project Guidance / Re: Advice on programming. on: December 21, 2013, 09:00:05 pm
Believe it or not, you have found the end of the rainbow...For here is the "pot of gold" of Arduino programming info.
There is a magic little tab atop this page called "Learning". If you dare scroll over it, a world of adventure awaits.
Also, as if a gift from the gods there is a search bar...Just look up yonder to the right...also ask what you wish, it's free.  smiley-cool
And as posted there are wise sages wondering around here with links to their domains.
51  Using Arduino / Programming Questions / Re: rotary dail on: December 21, 2013, 08:50:18 pm
It's dial not dail and it's process not proses.
Just helping your English spelling.  smiley-wink
52  Using Arduino / Programming Questions / Re: can't turn LED off on pin 13 on: December 21, 2013, 08:29:35 am
Your code turns the LED off for me at startup.
But setup() was changed to this so when the LED came on it would glow full brightness.
Code:
void setup() {
  pinMode(13, OUTPUT);
  digitalWrite(13, LOW);
}
53  Using Arduino / Programming Questions / Re: Simple timer to stop Loop and run a Scan Function every 60 mins?? on: December 21, 2013, 07:37:23 am
Three links from LEONARDOMILIANI.com  that may be of help:
Let’s schedule our jobs with millis()
looper, a software scheduler for Arduino
leOS, a simple OS for Arduino
I really like the looper, easy to use.
54  Using Arduino / Programming Questions / Re: Switch management class on: December 19, 2013, 08:03:43 am
Works great Nick.   smiley-cool
55  Using Arduino / Programming Questions / Re: '1284P pullup resistor error on: December 13, 2013, 08:33:25 am
It's attached.
56  Using Arduino / Programming Questions / Re: '1284P pullup resistor error on: December 13, 2013, 08:23:38 am
Crossroads I made your piano, and received the same error when I tried to change these lines:
Code:
for (x=0; x<14; x=x+1){ // input pins with pullup
    pinMode(keyArray[x], INPUT);
    digitalWrite (keyArray[x], HIGH);
  }
to this:
Code:
for (x=0; x<14; x=x+1){ // input pins with pullup
    pinMode(keyArray[x], INPUT_PULLUP);
   }

Side note: Also, couldn't get your piano to work correctly when I used the Atmega_Board_Programmer linked on Nick Gammon's Minimal Board page.
Had to use your ATmegaBOOT_1284P_16MHz.hex file.
57  Using Arduino / Audio / Re: Arduino UNO Low Pass Filter With Resonance - Update Correct Link on: December 10, 2013, 07:42:23 am
How's this coming along DuaneB, releasing soon?  smiley
58  Using Arduino / General Electronics / Re: How much current can female jumper wires carry? on: November 25, 2013, 06:37:19 am
  smiley-lol Good one westfw, a nice chuckle to start a Monday morning.
59  Using Arduino / General Electronics / Re: CR2032 Lithium cells are rechargeable? on: November 19, 2013, 06:10:08 pm
You mean lemons aren't rechargeable?
If you tap them while their growing on the tree, they will be...to an extent.
60  Using Arduino / General Electronics / Re: CR2032 Lithium cells are rechargeable? on: November 19, 2013, 07:38:58 am
Good to know that the LIR2032 can be re-charged as all the DS1307 modules I have came with those cells.
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