Normal noises at Little River Research.

Normal noises at Little River Research.

We’ve been busy at LRRD the past few weeks, planning consulting jobs (we’re mapping the Cache River this fall), conference travel, and finalizing the complete redesign of our Em2 model. It seems every day brings an important decision (Do we spent ~$10K, at...

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...

Ohio Stormwater Conference 2010 report.

Ohio Stormwater Conference 2010 report.

Last week Lily and I took an Emriver Em2 to the Ohio Stormwater Conference. It was a great meeting. We met a lot of agency folks and regional stormwater workers who have outreach missions. Anybody doing outreach immediately sees how our models attract people and...

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...

Eureka, maybe?  The ultimate flow sensor?

Eureka, maybe? The ultimate flow sensor?

Lily and I’ve been kicking around different ways to digitally sense flow for the last week, including making our own little propeller/turbine sensor.  Today as we cranked on finishing a proposal we’re working on with NCED and Winona State, I glanced at a...