I just completed my first project using the Moteino Node Network (
https://lowpowerlab.com/forum/index.php/topic,1072.0.html)
I wanted a keg scale to keep track of how much beer is left in my kegerator. And I wanted the scale to notify me when the keg is nearing empty (time to brew again!). The Moteino in this project reads the voltage provided by a load cell-instrumentation amplifier circuit, converts it to a weight and sends it to the MNN host. When the keg is nearing empty, the host sends a text to my cell phone!
I got the load cell from Amazon (
http://www.amazon.com/gp/product/B00NH9Q9LK/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1).
Circuit design, Circuit calibration, and physical assembly took about a day once I had all the parts. The Arduino code using the MNN libraries made programming and network integration quick and easy (a few hours). I've included photos of the result.
Now that testing is complete, I just have to paint, install, and get to work on my next project.