


Our happy first digital hydrograph!
Today we completed hardware and software for an electronic flow controller for our redesigned Em2. The little box you see here connects to the Em2’s pump and controls flow in the model. And it automatically runs hydrographs! Teachers and students can run...
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...
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...