This is the coolest looking thing ever. From now on I am going to include the term "tri-state" in the name of everything I make.

Consider that my hopeful attempt to skirt the cliche of "tricorder"

3 functions for this basic model.... gotta be tri- something..

DJUtils - i hope you saw, i featured your project in the weekly newsletter. Very cool!

Please do post your design files and everything! I love what you've don connecting the gas sensors to the RGB light too -- what is the latency on the gas sensors, and what concentrations can they detect?

neat!

I thought I read once, that with the appropriate filter solar cells or CDS cells could measure infra red light accurately(not just near IR). Might be an idea for an additional sensor with a IR filter.

Huh, that is a very interesting possibility... any idea where you read it?

It was an article about making an exposure meter for use in film photography with real IF film. real IR film is no longer made now. I am pretty sure it was a solar cell. I will have to dig spectral curves for solar cells. Most cameras of the day had CDS cells and just putting a filter over the sensor cell wasn't accurate enough. I seam to remember their being some amplification circuit involved because while accurate solar cells don't produce much electricity especially with a real IR filter on them! Someone was selling pieces of good IF filter material left over after he cut round filter out of them on ebay. I will check and see if that still is a product.

Thanks Warren, its an honor! I'm hoping to derive kitchen sink full of scientific functions soon and make a 10 function prototype soon... MQX!

App is being polished, but I'll put it in the nerdy demo video I'm about to make.

We're working on an open absorption and fluorescence tool for measuring plant photosynthesis and I would love to also know about what sensors you're using, and the detection limits and all that stuff. We have some additional sensors in there also (temp, rel hum, CO2, etc.) but we're always interested to include more and it sounds like you've identified a few good ones. Feel free to browse our project for sensors or circuits that may be useful to you (www.photosynq.org, and project docs are at https://github.com/Photosynq.

Also, we are setting up a platform so that arduino-based devices can easily connect and store data on the web via a cell phone app. It may be a good fit for this too eventually, though we've got some work to do before it's really ready to roll.

Awesome work!

Hi gbathree, posted an update with a demo version of our app. Maybe you might like to take a look at it and see if it helps in your work. Photosync looks great, and I'll keep reading up on your work as well.

Awesome looking device David... congrats.... :)

Thanks for sharing! I'll take a look next time I get a chance. Feel free to check out our app as well on github.