![Controller and Display boards inside a project box.](http://www.teracharge.com/wp-content/uploads/2012/11/IMG_2743-150x150.jpg)
We (household members and I) have recently ordered a handmade cold frame made of recycled household building materials. These little boxes are pretty cool: by relying solely on passive solar energy, one can grow all sorts of food during the…
We (household members and I) have recently ordered a handmade cold frame made of recycled household building materials. These little boxes are pretty cool: by relying solely on passive solar energy, one can grow all sorts of food during the…