The Em2x nears completion.

The Em2x nears completion.

 Last week was eventful, with bad news from NSF on a proposal and an anthropogenic flood event in our lab.  And many good things; we now have quite a waiting list for what we call the Em2x–our new version of the Emriver Em2. I’ve worked many days straight,...

Electronics, fluid mechanics, and our new Em2.

Electronics, fluid mechanics, and our new Em2.

We’re wrapping up  the pumping part of our redesigned Em2.  The new model will use electronics to control a 12-volt pump and send flow rate data to an LCD display (and also to a PC via USB and possibly wireless connections). We’re using an Arduino board as...

Emriver outreach in southern lllinois.

Emriver outreach in southern lllinois.

We’re super busy at LRRD with consulting work, redesign of the Em2 model, and other projects. And anxiously awaiting word on the NSF proposal we submitted in January. If we’re funded we’ll be doing a lot more work like this, but for now it’s...

High school outreach is awesome.  And strangely oscilloscopic.

High school outreach is awesome. And strangely oscilloscopic.

We’ve been developing an electronic device that will drive the pump in our Em2 models, replacing mechanical valves and also giving precise flow data in digital form. The small DC pump motors are best controlled with pulse width modulation (PWM)–an...

Em2 redesign, your opinion please!

Em2 redesign, your opinion please!

We’re still working on design for legs/supports for the new Em2:  After what must be hundreds of hours of calculations, model building and testing, and meetings, I’ve walked in a circle and picked up my own tracks in the sand! I won’t go into the...