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61  Forum 2005-2010 (read only) / Interfacing / Re: Heart rate monitor Sensor? on: February 01, 2009, 07:43:27 pm
Do you have an example sensor to link to?  Data sheets or even # of wires would be a start.
62  Forum 2005-2010 (read only) / Workshops / Re: Anyone in Phoenix Arizona? on: June 19, 2010, 10:37:15 am
I'm down in Tucson.  I'd love to come up for some sort of larger gathering / show, but making it up for any sort of weekly meetings isn't really an option.  smiley-sad
63  Forum 2005-2010 (read only) / Workshops / Re: Workshop in AZ? on: January 02, 2009, 05:31:51 pm
I'd go to a beginner's workshop if one showed up in Tucson or Phoenix. smiley
64  Forum 2005-2010 (read only) / Exhibition / Re: Toolduino software for controlling your Arduino on: July 16, 2010, 12:29:19 am
I wouldn't bring the image all the way down to just the chip, but I agree that simplifying the image might be a good idea.  Something like the arduino graphic in Fritzing might work really well.

65  Forum 2005-2010 (read only) / Exhibition / Re: First Stand Alone Arduino Project - Blinking LEDs! on: April 14, 2010, 06:57:48 pm
Woops, didn't realize the file couldn't be downloaded off-site.  I changed it so try again.
66  Forum 2005-2010 (read only) / Exhibition / Re: First Stand Alone Arduino Project - Blinking LEDs! on: April 14, 2010, 12:49:01 am
The correct values for your project will probably be different than mine. smiley

I'm far from an EE, most of the component values I've used have been copying from other projects or trial and error.  For this project, the resistors in front of the LEDs are 220[ch937] resistors, and the decoupling capacitor on the chip is a 0.1µF cap.  There's also a 10k[ch937] pulldown resistor for the button.

I finally put the schematic and eagle files online:

Eagle Files: http://www.fischco.org/storage/arduino/UITS%20Circuit%20People%20Mega8.zip




67  Forum 2005-2010 (read only) / Exhibition / Re: First Stand Alone Arduino Project - Blinking LEDs! on: April 12, 2010, 10:03:47 pm
I did use eagle to design the board.  Its interface is .. challenging, but I did eventually figure it out.  Sparkfun has a great intro to eagle that I found helpful:

http://www.sparkfun.com/commerce/tutorial_info.php?tutorials_id=108
http://www.sparkfun.com/commerce/tutorial_info.php?tutorials_id=109

I had the boards made through BatchPCB.com.  If you only want 1 or 2 small boards made, I found them pretty reasonable in terms of price.  It took about 3 weeks for me to get my boards back, so if you need something really quick its not the best route.
68  Forum 2005-2010 (read only) / Exhibition / Re: First Stand Alone Arduino Project - Blinking LEDs! on: April 11, 2010, 08:14:58 pm
Quote
Have you pre-programmed the chip?
and if you have how did you programm it :-/

I did program the chip before hand.  I can pop the chip out of the socket. I have a breadboard set up that I can drop the chip into, and hook up an FTDI cable to it to program.

69  Forum 2005-2010 (read only) / Exhibition / First Stand Alone Arduino Project - Blinking LEDs! on: April 11, 2010, 12:45:36 am
This is my first project where I created my own board for the µC to live on.  It's an ATmega168 with the regular Arduino bootloader on it.

I have to admit, it's pretty cool to hold a finished PCB in your hands that you designed.  smiley

http://www.fischco.org/blog/2010/4/11/uits-circuit-people-it-works.html



Based on our Department Logo:


70  Forum 2005-2010 (read only) / Exhibition / Re: Intervalometer: Arduino + old(ish) Canon digicam on: June 18, 2009, 10:54:41 pm
Yeah, I've read about CHDK before, unfortunately they don't have anything for the A510, and I'm not up to starting a project like that.
71  Forum 2005-2010 (read only) / Exhibition / Re: Intervalometer: Arduino + old(ish) Canon digicam on: June 18, 2009, 09:09:53 am
I have a cannon powershot A510, the form factor is realy similar to yours.  I'd also be interested in how you hacked the trigger etc.
72  Forum 2005-2010 (read only) / Exhibition / Re: firefly night light on: June 15, 2009, 10:44:15 pm
I'm doing something very similar, fading LEDs on my ceiling to emulate a twinkling star field.  You're using almost the same logic I am for picking a random LED, and fading it up and down.  smiley
73  Forum 2005-2010 (read only) / Exhibition / Re: Spaceship Simulator for my son's room on: January 17, 2010, 11:05:18 pm
That's a pretty awesome family project there!  I'm hoping I get to do similar stuff with my daughter as she gets a little older.
74  Forum 2005-2010 (read only) / Exhibition / Re: LED Star Field using TLC5940 on: January 01, 2010, 10:33:39 am
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Anyone else in your house? I don't think the other people in my house would let me do anything like that!

Fortunately my wife is pretty understanding of these things.  smiley-grin  The only holes are where I had to mount the control unit, as you said, everything else is held up by tape.  Its definitely a plus to live in a house you own, where you can pretty much do what you want, and don't have to worry about leases or inspections.
75  Forum 2005-2010 (read only) / Exhibition / LED Star Field using TLC5940 on: December 31, 2009, 07:48:47 pm
I've finally managed to complete my first installed project in our house.  Installing 32 white LEDs on our bedroom ceiling to imitate a star field.  Each LED is individually controlled from a Seeeduino, using two TLC5940 chips for fading them on and off.



There's a video of them in action, along with a more detailed description of the project along with code on my website.
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