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1321  Forum 2005-2010 (read only) / Exhibition / Re: Mr.Tidy (Mega Version), Autonomous colour gripper on: June 27, 2010, 08:29:23 am
The intelligence of the color sensing and the smarts behind using the gripper arm for stacking must have been fun challenges.

I particularly liked the randomness of the hunting/avoidance routines that avoided getting stuck in a loop by taking into account... boredom.  
1322  Forum 2005-2010 (read only) / Exhibition / Re: Mr.Tidy (Mega Version) - visits the Swiss Alps !!! on: June 26, 2010, 06:44:21 pm
Awesome.  Nicely Done.
1323  Forum 2005-2010 (read only) / Exhibition / Re: Commodore 64 scrolling text messages on: April 28, 2010, 06:00:32 am
Neat.  I like it.
1324  Forum 2005-2010 (read only) / Exhibition / Re: Serial in C# on: February 24, 2010, 08:54:43 am
Boo...  at that price... this isn't even slightly geared towards hobbyists.
1325  Forum 2005-2010 (read only) / Exhibition / Re: Serial in C# on: February 20, 2010, 11:31:35 am
Most excellent!
1326  Forum 2005-2010 (read only) / Exhibition / Re: Wireless Wii controlled self balancing skateboard on: February 08, 2010, 09:33:25 am
Insanely Cool!
1327  Forum 2005-2010 (read only) / Exhibition / Re: My Arduino Aquarium Controller on: August 03, 2009, 12:55:17 pm
RGB LED's are really not that expensive.  $0.99 each is really not that bad.  http://www.mpja.com/prodinfo.asp?number=17137+OP
1328  Forum 2005-2010 (read only) / Exhibition / Re: Cheapduino on: April 29, 2009, 11:11:33 am
If you have some basic parts, there are transistor equivalents to the MAX232, you can find examples at SPARKFUN as well.
1329  Forum 2005-2010 (read only) / News / Re: FORUM MIGRATION SCHEDULED JAN 24th on: January 18, 2011, 08:24:30 am
I can't help feeling this is going to be sort of messy.

Good luck.
1330  Forum 2005-2010 (read only) / News / Re: Arduino PID Library on: July 14, 2010, 09:31:50 pm
Brett, ZeroVector ... You  guys rock!

ZV, The Timer Library you used was the answer I'd been searching for.   I had no clue about it and it allowed me to have much better control over my Kiln temperature with correct PWM output settings.

I use an SSR to control a 2000 Degree F, 20 Amp Kiln.  I have now been able to reach my goal of 1290F and was hovering between +/- 6 degrees with minimal overshoot.  I was thrilled!
1331  Forum 2005-2010 (read only) / News / Re: Arduino PID Library on: June 10, 2010, 12:59:22 pm

Setting PID values correctly is truly an art/science that does seem to get the experts some nice paychecks...

Your application seems more like an ON OFF design from what I can tell... the PID library works best if the feedback about what you are trying to measure/control is changing as it get close to set point.  Like a temperature reading, for example.

A PID tries to adjust it's output based on the input error...   but in your case... it sort of like playing 1...2...3... RED LIGHT!  if you have ever played that game... you might know what I mean...

You have an action with inertia... water feed.... and you want it to stop at an instant in time with little warning...  which sounds pretty hard to do to me...

I'm not claiming to be a PID expert though... maybe I can be corrected by one of the guru's here...
1332  Forum 2005-2010 (read only) / News / Re: Processing Front-End for the PID Library on: August 03, 2010, 02:29:24 pm
It really helps!
1333  Forum 2005-2010 (read only) / News / Re: Processing Front-End for the PID Library on: July 13, 2010, 08:28:44 pm
Please consider keeping PID Library an active project.  I personally love it.
1334  Forum 2005-2010 (read only) / News / Re: Sprout Board - Open Source Server Room Monitoring on: June 14, 2010, 07:03:14 am
Wow... that's  a super idea.  Well implemented.
1335  Forum 2005-2010 (read only) / News / Re: How can I send a float variable to Processing? on: July 03, 2009, 05:59:01 am
Prior to recent ARDUINO versions (version 15 I think) I was using the following subroutine to print floats.

Code:
//--------------------------------------------------------------------
void serialPrintFloat( float f){
//--------------------------------------------------------------------  
// print results properly with float decimal value
 int i;
   Serial.print((int)f);
   Serial.print(".");
    i = (f - (int)f) * 100;
   Serial.print( abs(i) );
}


Now lets hope this question thread can me moved to where it belongs?
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