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61  Forum 2005-2010 (read only) / Exhibition / Re: 112 RGB LED Coffee Table on: February 16, 2010, 09:29:07 pm
Wow. Very impressive, Joe.

Do you have any schematics? I'm curious as to how you've multiplexed the LEDs with the TLCs.

I'm assuming you have your manual controls and the processing sketch tied to the master board, which updates the slave? The master sends a rough equivalent of the Box[] array via I2C?
62  Forum 2005-2010 (read only) / Exhibition / Re: rgb led load monitor (linux only) on: November 10, 2008, 12:18:54 pm
Awesome. I'll check out the source later smiley-grin

That box looks great, by the way. Did you build it yourself, or find it somewhere?
63  Forum 2005-2010 (read only) / Exhibition / Re: rgb led load monitor (linux only) on: November 08, 2008, 12:03:00 pm
Looks good, mad!

Will you be posting the details? I'd love to set something like this up. I've been poking around with something similar, and would like to see how you did it smiley
64  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Motion-Sensitive SPST Switch? on: November 06, 2008, 12:31:10 pm
I'm intending to break the connection to the entire circuit. Like adding a switch to an LED throwie.

This switch is going between the batteries (or other supply) and everything else. If the switch is open, nothing gets power. I have more than just the arduino in the circuit - there's a TLC5940 plus a slew of LEDs.

By turning the system upside down then back again, you toggle it between on and off states.
65  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Motion-Sensitive SPST Switch? on: November 06, 2008, 11:41:11 am
Thanks for the replies, guys -- but I think I didn't explain myself well enough.

Here's what I want to have happen:

Instead of a box, I'll use a statue with eyes that light up as the example.
  • Statue is off, no lights. Feet are on the desk.
  • Pick statue up, rotate head toward the floor. Eyes come on.
  • Set statue back down on it's feet, eyes are still lit.
  • Rotate head toward the floor again, eyes turn off.
  • Set it down again, still off.
Using a mercury switch, the connection is open or closed based entirely on the orientation of the switch. This doesn't work without having to use the Arduino to watch for a state change. Since this is intended to be used as a way to cut off the power supply, having the chip monitor switch states defeats the purpose.
66  Forum 2005-2010 (read only) / Frequently-Asked Questions / Motion-Sensitive SPST Switch? on: November 05, 2008, 07:42:13 pm
Does such a thing exist? Basically, I'd like a switch that would change states when inverted or shaken. I know a mercury switch does this, but it's not the effect I need.

I would like to use this as a power switch for a project I'm working on. Turn the box upside down, it turns on. Turn it again, it turns off.

I know I could do this with a mercury switch and the arduino, but I would really like "off" to truly be "off" -- no power to the circuit whatsoever.

Any ideas?
67  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: "Shimmering" LEDs on: August 20, 2008, 01:31:46 pm
Yeah, I'd love to take a peek at the code, if you don't mind smiley

I like the idea of the polarizing filter, too.
68  Forum 2005-2010 (read only) / Frequently-Asked Questions / "Shimmering" LEDs on: August 20, 2008, 12:21:50 pm
I haven't been able to find much on the web, but I figure there's something out there....

I am trying to create a shimmering effect with a bunch of LEDs. (I have no idea how many, yet)

They're intended to be an indirect backlight, with the effect of moonlight glinting off of a lake or stream. In other words, a gentle but rapid shifting of light in a fairly random pattern. I don't need "solid lines" (as you would see on a wall nearby). I know that can't be accomplished with LEDs alone.

I'm not looking for a complete solution, because I'm not 100% sure how the final product would turn out. Plus, I won't learn anything that way. Really, I'm just looking for similar projects and code snippets/pseudocode to get some ideas as to how to do it.

Thanks in advance!
69  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Pre-purchase Research on: April 17, 2008, 10:15:41 am
Great!

Thanks for the fast response  smiley

In skimming the articles about the bootloader (and some of the external links), it looks like I would need to buy/build/otherwise acquire an AVR programmer if I buy an atmel chip by itself.  

If I'm understanding things correctly, Arduino is just one of many ways to start working with the AVR family of chips. The Diecimila just gives an easy, pre-built alternative that doesn't require a whole lot of soldering. Yes?

And, if I write something that works on the Diecimila, it should work on the Mini, or even a blank AVR chip, right?

70  Forum 2005-2010 (read only) / Frequently-Asked Questions / Pre-purchase Research on: April 16, 2008, 04:44:58 pm
I am currently doing a little research into various microcontrollers, and the offerings of the Arduino and it's surrounding community are very enticing.

My major question at this point is this: If I buy the Diecimila, is it "required" to use the board after programming the ATmega168? In other words, if I make a simple LED flasher, can I simply remove the chip from the Diecimila, and solder it onto a smaller etched pcb to use? (I know I would need the power supply, crystal, etc.)

Thanks in advance,
Nate
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