Member Since: October 18, 2009

Country: United States

  • Who needs green light? ;) Plants reflect most of the green light. They utilise mostly red and blue..

    Here's a little image showing what wavelengths photosynthesis occurs on http://www.sd84.k12.id.us/shs/departments/science/yost/Biology/5%20-%20Energy%20&%20Metabolism/chlorophyll_absorption_graph.jpg

    P.S I like the direction SF is going, starting to sell peristaltic pumps, R/B LED's, Constant current supplies, Atlas Scientific probes (K0.1 plz), etc.

  • cool. I worked on something like this a while ago. I use it daily :)


    The code design isn't the greatest since I slap in features as I need them. Would like to learn MVC and re-apply some day.

    I basically implemented a gateway in python which receives commands over ajax/websockets and dispatches them accordingly. a little API to match.

    I can control DIOs, sampling, or send commands to uart with either addressing or broadast. the video is outdated though. I have panels which I can add and all values are stored in cookies.

    I'd like to clean it up sometime, but my little 3m.o man is more interesting :D Will be glad to help anyone get this going if they'd like. A few ppl around the world have adapted it to different things. Someone in brazil is even using it to control his HAM system with motor control and all :)

  • This is great, along with the headers you put up! Very useful :) Why are these and the tx/rx'ers not in a new product post? I'm more interested in this stuff! I'm glad I peek :D

  • Personally I suggest getting a few modules and experimenting a bit first. Say, 2x50mw + 2x2mw + usb explorer etc.. It will take you some time to get familiar and all your code going. Expanding from there will be easy and you will probably want other things by then anyway so the shipping is irrelevant..
    Have you got a bunch of old phone chargers around? They're good power sources! Otherwise, pick up some 5v chargers..

  • Pretty much, yeah. I suggest you try get to read the recommended "Building Wireless Sensor Networks" book. It deals exactly with what you're trying to do!
    To be more precise, you will find that you don't need the arduino's if you're just temp sensing, since the modules have analog inputs. You can send an analog read request to them directly without any additional microcontroller. They also have a few outputs you can control. Microcontrollers are handy for when you need to do more sophisticated things on an end point (eg: transmit an infra-red code to your television or airconditioner). The mentioned book has examples for remote analog sensing. It also shows you how to use processing as a tool to request the info and display it. There is also a good python library available! :)
    The end points don't have to be the same power. You just have to ask yourself what the distance is between them and the closest router, and if your house is concrete or wood...

  • Great. A whole link for less than 10$ :) I've got to check these out. Added to cart.

  • Since you're building a network of them, you could use mesh networking. Then you just have to ask yourself what the largest distance between 2 devices are. If you decide on mesh networking, make sure to get series 2 devices. IMO, this is the way to go. Something like the coordinator on your main machine in the basement, a router on each floor, and the rest can be end devices. (The routers can be sensors too)

  • Looks like loads of potential, specially with the app cpu. Added to my next basket :)

  • Glad to see product devs plan to stay active around here :)

  • Maple and Wixel look awesome! been waiting for some new toys like these.. def. adding some to my next cart :)
    P.S. - I love SparkFun's giveaway spirit! :)

No public wish lists :(