Show Posts
Pages: [1]
1  Forum 2005-2010 (read only) / Interfacing / Re: Announcement: AT24C I2C EEProm Management Library on: November 30, 2010, 08:07:46 pm
Just found you Bank project and looks like just what I need, so I will check it out. I do have a question, you have pull-ups on each EEPROM chip's SDA & SCL line. My understanding is it's one set of pull-ups on the SDA & SCL lines for the whole bus, but I'm new to all of this so I could be wrong  smiley

If it's per chip that would be great info as I'm using 2 I2C chips now with only 1 set of pull-ups on the bus.

-Chris
2  Forum 2005-2010 (read only) / Development / Re: Has anyone used the PCB service from Seeedstudio? on: October 17, 2010, 03:32:37 pm
I have used http://dorkbotpdx.org/wiki/pcb_order for PCB orders. Only $5 per square inch includes shipping in the US. He runs boards about every 3 weeks or so and for the $5 you get 3 copies.
3  Forum 2005-2010 (read only) / Development / Re: Beta testers for packet radio shield on: February 08, 2010, 02:35:13 pm
Can you post the schematic and/or code?
4  Forum 2005-2010 (read only) / Development / Re: Beta testers for packet radio shield on: August 03, 2009, 11:39:56 am
Any updates on this project?  smiley
5  Forum 2005-2010 (read only) / Interfacing / Re: New library for HopeRF 433MHz serial transceivers on: January 28, 2010, 06:54:57 pm
Do you know of a source in the US for these radio's? So far everything in mainly turning up forum links.
6  Forum 2005-2010 (read only) / Interfacing / Re: Running I2C and 1-wire devices together on: December 02, 2010, 05:07:20 pm
They will work together. I'm working on a home monitoring system that's connected to I2C (RTC & EEPROM), 1-Wire (Temp and A/D) and SPI (DOGM GLCD Display). I have the system working right now with a single 1-wire device, logging to the EEPROM and graphing to the GLCD.

The best approach I found is work on it as spate pieces. 1st get the 1-wire part working (this seems to be the most difficult one of the 3). Once you have that working, then add in the I2C then SPI. As I add each piece, I debug with info out the serial port to make sure everything is still working.
7  Forum 2005-2010 (read only) / Interfacing / Re: Which 1-Wire devices except thermometer? on: October 15, 2010, 03:06:12 pm
Checkout the code on this site: http://code.google.com/p/gfb/source/browse/#svn/arduino

This guy has created some lib for some of the chips. At worst case, it's a ref point to start from.

Chris
8  Forum 2005-2010 (read only) / Interfacing / HVAC monitoring using opto-isolators? on: October 06, 2010, 02:54:54 pm
I'm working on a home environmental/energy monitoring system. I would like to monitor our 2 HVAC systems so I know when they are on, how long and what mode (heat or cool). My plan is to use mostly 1-wire network for data gathering. So that the HVAC  I figure it would be best to monitor the “Heat” or “Cool” control leads via opto-isolators. Then feed that into a 1-wire GPIO device. So my question is what opto-isolator would I use for this? I know about using them with a Triac to turn on 120v AV, but I need to monitor 24 AV instead. Any suggestions?

-Chris
9  Forum 2005-2010 (read only) / Interfacing / Re: Use Arduino to switch 64 220v lights? on: March 22, 2010, 01:35:48 pm
You may want to look into something like the Renard that's used for Xmas displays. I have 2 and they work great! Don't have all the dev time and there is PC software to control it.

http://www.christmasinshirley.com/wiki/index.php?title=Renard_Main_Page
10  Forum 2005-2010 (read only) / Interfacing / Re: Interfacing Anemometer on: February 02, 2010, 08:20:38 pm
The problem is the 1-wire chip you are referring to has been discontinued. I have the same setup and using interrupts for both the speed and rain and at higher speeds seeing some really odd high readings for wind speed and was wondering what was going on.
11  Forum 2005-2010 (read only) / Exhibition / Re: QlockTwo remake on: January 19, 2010, 03:35:07 pm
@Were - Do you by any chance have your code post anywhere so we can take a look?
12  Forum 2005-2010 (read only) / Exhibition / Re: Life Clock on: February 06, 2009, 01:21:45 pm
BroHogan,

Could you send me a copy of the schematics and code? I'm really interested in the code for loading and reading the eeprom for font data. I'm looking at making a sign, but the main part i'm hung up on is the way to take a message and lookup the font data in eeprom. Nice project!  smiley
13  Forum 2005-2010 (read only) / Exhibition / Re: 5x5 Font for LED Matrix on: February 09, 2009, 03:56:15 pm
Can you post your code that you are using for your YouTube video setup?
Pages: [1]