Tag Archives: dallas onewire

New Temperature Monitor

Written by Mathew on April 10, 2010 — Leave a Comment

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 [...]

Posted in composters, design | Also tagged , , , , , , ,

We’re speaking at PSU on January 25th

noon on a Wednesday. Room 296 in the Smith Memorial Student Union (near SW Broadway and SW Harrison). We will speak about the recent history of urban sanitation, and the dual crisises of resource management and aging infrastructure driving the development and deployment of alternatives.  The talk will focus on case studies of alternative systems in the US, China, Germany, Sweden, and Yemen.
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