Awesome open-source Emriver instrumentation.

May 10, 2010

After quite a few weeks of work we managed today to hack thoughtfully meld a bunch of code and electronics to produce a device that can do three things: 1.  Control a 12-volt pump’s speed and flow output, and 2.  precisely measure that output in ml/second, 3. ...

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Open source science tools at LRRD.

Apr 30, 2010

Here you can see the first operational version of a small Arduino-based flow meter we’ve built based on an open source design. Parts cost is roughly $75.  Compare that with at least $600 for similar commercial models.  And this one can be built from easily...

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Kids, not consultants, design the new Em2 model.

Apr 29, 2010

We’re nearly finished with a complete redesign of our Em2 model.  Here’s detail of a wood/acrylic mock up of the new legs. How to design. Hire consultants? For a small project, the finding/contracting can dwarf time spent on actual work. I have to start by...

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Emriver outreach for the young and old.

Apr 23, 2010

We’ve had a busy couple of weeks with our Emriver Em2.  First, Andrew Podoll, an NSF-funded geology/education GK-12 HEART fellow at SIUC, borrowed the Em2 for a student research event.  It was a huge hit with the kids, as you can see. Last weekend I hauled to...

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Emriver Em2 redesign. John Cotter, are you out there?

Apr 20, 2010

I’ve spent many hours over the last week and most of today trying out new ideas.  There is no way other than building these mock ups.  I enjoy the work.  But not the long hours.  Thanks to many helpful collaborators! Too bad my aviation tech professor friend...

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