Thursday, December 31, 2009
Tuesday, December 29, 2009
Tuesday, December 22, 2009
Friday, August 7, 2009
Thursday, August 6, 2009
Wednesday, July 8, 2009
So I did some reading and some internet searching, and think I have at least part of the power issue figured out. I purchased a 7805 +5VDC Voltage Regulator, wired up my 1/2 size breadboard as my external power supply and added an led to that board and to 3 others down the line as a visual to see if power is being routed properly. Now with just the ground from the Arduino going into the circuit I can get everything operating properly. So the next test will be to get a Voltage Regulator with a higher current rating and a heat sink to get up to the current I need to drive all of the leds. 2 internet posts that helped a bunch. *ITP Physical Computing & *http://pixelriot.com/pmatp/node/285
Monday, July 6, 2009
Sunday, July 5, 2009
If anyone out there in internet land can help me with these calculations I would be greatly appreciatative. Here are the datasheets for all of the parts. AT Mega 328(Arduino), XBee, 8x8 Led, Max 7219.
Wednesday, July 1, 2009
Of note I didn't have to change my arduino code at all, just plugged one xbee straight into the iobridge, GND->GND, 5V->5V, Rx->Tx & Tx ->Rx. The other xbee went to the arduino, 3.3v ->3v, GND->GND, Rx ->Tx & Tx ->Rx. Simple as that. Photos shortly, gotta charge my camera.
Tuesday, June 30, 2009
Thursday, June 25, 2009
Monday, June 22, 2009
Friday, June 19, 2009
Secondly, we added a blue row to our LEDs and now show the open/closed/groomed status for 16 trails. I tried to make it a little easier to see the different rows by putting the cardboard on top. Here's a quick guide, Red = Closed, Green = Open, Blue = Groomed. Only one light will illuminate for each trail. Next step would be to do this with a single RGB LED. Also to note what it is doing, I create a quick startup sequence that runs when I reset the Arduino. Then I click 2 buttons I created in the flash program to turn on trails 1-8 & 9-16.
Thursday, June 18, 2009
Wednesday, June 17, 2009
Saturday, June 6, 2009
Friday, May 29, 2009
I'm still waiting on the 8x8 matrixes but this is a great place to start. Just learning some of the code and how the hardware interacts with the computer will help immensely. I'm not naive and know that a project like this will start with small steps and build to the final piece. It's those steps that get me excited.
Background music by Drive by Truckers. From NPR's Mountain Stage. Love it...need more.
Wednesday, May 20, 2009
The Learn to Solder Bundle
Getting started with Arduino
More details when the next package comes in.
32-220 Ohm resistors (Unit Price .42)
4-SN74HC595N 8-bit shift Registers 16-Dip (Unit Price .66)
2-STP16C596XTTR IC Driver Led Sink 16Bit 24TSSOP (Unit Price $3.53)
I know the resistors and 8-bit Shift registers are what I need, at least for phase one of the project, the 16-bit Led Driver was kind of a shot in the dark. I'll snap a picture when everything from my first round of orders comes in. I'll start a running list of supplies on the right side of this blog with links to purchase online, so when I need more it will be really easy to find and order.
Create an Interactive Trail Map using LEDs and one of our existing 6 foot signs.
Read trail data from XML feed available online.
Wireless data transfer
Must display Open, Closed, and Groomed status for each trail
Has to be legible from a distance
No daily human interaction, must update itself on it's own.
With that, welcome to the project, this will be the place for updates and for me to keep notes. Up next packages in the mail?