Tag Archives: arduino
Our problem: We need to know the % of moisture in each batch of manure to determine how much carbon material (sawdust, coffee hulls, etc) to add to achieve 50-60% moisture (typical ideal moisture for aerobic decomposition). We didn’t have an oven that could accurately maintain temperatures between 221-230 F (and we didn’t really want [...]
I’ve re-made the compost temp sensors to conform to our original design of stabbing probes. I was having difficulty choosing a non-conductive housing for the probes that could give accurate measurements along its length, until I remembered that my favorite plastic, polyethylene, is mostly transparent to infrared. Duh, that’s why I make solar balloons out [...]
There is no substitute for the complexity of human senses. Quantitative data is cannot stand in for direct experience with compost. But it does provide a means of directly comparing processes and feedstock mixes, as well as real-time feedback for control. Lacking grad students or interns we have only robots to exploit (for now…). To [...]
I’ve just installed an Arduino-based temperature logger at five points in our compost pile, proving the obvious: it’s hotter on the sunny side and hottest in the middle. Details tomorrow, but check out these sweet dashboard widgets!
Mathew and I entered Metropolis magazine’s competition for “one fix that will make a positive difference in the designed environment.” They had 292 applicants this year. We wrote up a proposal for a networked sensor platform for navigating the social and legal obstacles to locally cycling organic matter. It closes the loop between composting toilets [...]