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1  Forum 2005-2010 (read only) / Forum / Re: Filtering recent posts by language or area on: July 05, 2010, 06:06:50 pm
I too would love if anyone has an answer to this. I use news gator at work in my outlook to keep up with th forums, I had to write a bunch of rules for outlook to disregard unwanted ones. Is there a more specific RSS feed ?

2  Forum 2005-2010 (read only) / Exhibition / Re: Breadboard POV on: March 22, 2010, 10:50:44 pm
Well you got it right. I declared all of my pinMode outs individually and they come out nice and bright. I have an exam in the morning so figuring out why my for loop didn't work will have to wait.

Thank you for all the help whosawhatsis
3  Forum 2005-2010 (read only) / Exhibition / Re: Breadboard POV on: March 22, 2010, 02:30:04 pm
Hmm... Well I declared the pinMode to output in a for loop as you did. When I get home tonight I will try them indiviually, see if that does anything.

As for the ternary bit, excuse my programming newness, is the ? in the
digitalWrite(ledpin[j], (letter & pow(2, j)) ? HIGH  : LOW);

I thought the ? was called that. I googled it and thats the name it spit out. Then I found out the & (who knew it was called ampersand???) and did the bitwise run around. Busted out the calculator with Binary and started fidling.... It is a pretty neat way to do things. I have no idea what base 3 is though.

I will be looking into it more though.
4  Forum 2005-2010 (read only) / Exhibition / Re: Breadboard POV on: March 22, 2010, 10:13:36 am
Ok I did wire it up the same way you did. I am using 7 red LEDs, and they are really dim. I previously did a POV where I wrote out manually every line such as

digitalWrite(ledpin1, HIGH);
digitalWrite(ledpin7, LOW);

and I had no problems with my brightness. I really liked your code so I decided to give it a try. It was good for me because I had to decipher excatly what the bitwise ternary bit was. Maybe I missed something in your code. I will stab at it again.

5  Forum 2005-2010 (read only) / Exhibition / Re: Breadboard POV on: March 22, 2010, 12:32:54 am
I did something very similar (borrowing from your code) but I am having difficulties with my LEDs not being that bright. Can you (or anyone) elaborate on how those LEDs are wired up.

just leds on pins 3-12 connected to the breadboard's power rail, which is connected to ground through a 330 Ohm resistor, and a button connecting pin 2 to ground.

I need a bit of clarification...
6  Forum 2005-2010 (read only) / Exhibition / Re: Punch Acceleration sensor on: April 05, 2010, 09:49:54 am
This is a very cool project, and nicely detailed. I really liked the explanation for the use of the 16bit a/d converter, and the graphs really explain it all.

7  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Arduino line following help? on: May 25, 2010, 07:47:08 am
People will vary with what they do, but the last one I built I used three photoresistors from radioshack. I believe I bought a pack of 5-6 for 5 bucks.

Fun simple beginner project.
8  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: what sensor shall i use to track human movement on: May 25, 2010, 10:58:11 am
Also, are we talking about one person tracking, or multiple people tracking? Are you with where they have been, or with where they are going? Or is it that you just want light where someone is?
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