First off, WHIA v1 code is in the WHIA FAQ. It sucks, I know. that’s why I’m doing v2. Here is an outline of what I’m doing for v2.
- Communication is now query/response based instead of the arduino constantly chattering.
- Individual sensors can be queried or all sensors.
- No more pressure sensors. Too variable, instead my safety gear focuses on the number of registers open and inlet/outlet temperature. I’m considering a hot wire anemometer.
- I went back and forth on it, but I’m using two Arduinos talking I2C. One controls the inputs, one controls the outputs.
- Thanks to I2C, we have lots and lots of blinky lights this go around. Two for each sensor and one for each servo.
- I’ve stubbed in support for controlling the mini-blinds in each room via xbee or cheap 900mhz radio.
- I actually control registers instead of dampers in some of the rooms, chiefly the basement.
- Water sensors have been added in the basement and under the washing machine (long story).
- The big one, a web based gui for feedback and control this time.
It’ll be well into winter before this one is done and a few more weeks before I’m even at a stage where I can post code, but I’m going to stand up the v2 page anyways and just start putting everything out there. I did a really poor job of getting my code and schematics in shape and online for v1, so I figure the best way to remedy that is just to hang it all out for v2.
Thanks again all of you google ads clickers, you bought me servos and micros and are funding the work on v2!
December 9th, 2010 at 3:20 pm
Hi jason,
I just got some room to play (aka first house) and already got some gear. WHIA was the first idea in my head when I realized I got a new place. Even thought I have never seen to this blog before.
I’m completely new to arduino, so it was interesting to read your findings. Will take a look at your code as soon as we done with unpacking.
As web developer I believe that everything can be controlled from the web, so web based gui is a great idea. Looking forward for more posts.
December 9th, 2010 at 8:28 pm
Thanks . Kids have side tracked me for a bit, but I do have a new vent design that I posted a picture of http://yfrog.com/n1y9m0j that you might enjoy.