Member Since: April 8, 2009

Country: United States




My name is Matthew Crenshaw and I work on underwater positioning and animal monitoring systems for my company. It’s small but we get to build neat things so I like it. My ideal week is one where we decide we want a prototype to prove a concept and we need it ASAP so I get to throw something together and show it off to whatever government organization is funding the project.


VP Engineering


Desert Star Systems

Spoken Languages


Programming Languages

C#/Java/C/C++ (preferred in that order)


Scuba diving and ocean testing, hardware/software development.


sensor networks, underwater technology, wearable computers, rapid prototyping, energy harvesting


http://www.weldtopia.com http://www.desertstar.com

  • Product COM-09642 | about 2 years ago

    Ya I’m doing that right now with a fez panda running the buck toot off a 12V lead acid battery and a mosfet on the ground of the input. It runs great varying intensity.

  • Product GPS-10890 | about 2 years ago

    If you work on that cat collar post pix or links! I’d like to use this for animal monitoring as well but on sea otter flippers around the Monterey bay. We’re working with Fish and Wildlife Services to make solar powered Zigbee flipper tags and this guy would be gold if he worked out.

  • Product COM-10798 | about 2 years ago

    Has anybody tried laser cutting these?

  • Product PRT-10255 | about 3 years ago

    This guy will let you do things like run your microcontroller off some capacitors(http://www.sparkfun.com/products/746) by boosting up the voltage to something more useful. If you want more info on solar charging look at http://www.adafruit.com/blog/2010/07/09/how-to-make-a-solar-mintyboost-a-solar-power-charger-for-your-gadgets/

  • News - Bootstrapped, Profitable,… | about 3 years ago

    Sit in your garage for four years making stuff and invite some friends over just so you don’t go crazy and you’ll probably be a better maker. You could do your own production runs with all the money that most people spend on college and build up your own product line which would give you a pretty sweet resume. It is crazy the amount of debt people rack up to get a degree just to end up jobless.

  • Product SEN-09848 | about 3 years ago

    I like the price of pachube better($0!). http://www.pachube.com/?q=geiger but it doesn’t have as many stations in the US yet.

  • Product SEN-09848 | about 3 years ago

    Now we just need to get a google earth map going that plots the data and get a few hundred more sensors online!

  • Product SEN-09848 | about 3 years ago

    Only my hampster and my geiger counter have twitter accounts. Here’s the geiger I’m just getting going on right now: http://twitter.com/#!/Geiger93933 and the hampster escaped after I attached a generator to his wheel :x http://twitter.com/#!/georgehampster haha. (The geiger counter is posting hourly hits now but I’m not sure how well the code will hold up, will mod tomorrow!)

  • Product SEN-09848 | about 3 years ago

    Arduino + ethernet shield + twitter library http://arduino-tweet.appspot.com/ is the quickest route to the tweet (assuming you’re not relying on a PC being on all the time). I’m setting mine up using a fez domino connected to the geiger counter and keeping that on my roof. A zigbee chip will send the data down to the arduino every hour and it will post it on twitter. I’ll post all the source and images of how everything is setup after it’s going.
    Reading your post makes me kind of laugh because I didn’t really consider the idea of using a PC to do it but ya, that would be pretty convenient I guess! One cable and a netbook instead of a pile of chips. Genius!

  • Product SEN-09848 | about 3 years ago

    I live over in the Monterey Bay(California) so I’ll try to get my unit on twitter tonight.

No public wish lists :(