Category Archives: Self-Sufficiency

Repost: Rules of the House

ed. This is a repost of an article from last year, prior to the new blog format here. Those who followed my advice to watch “Welcome to Leith” will recognize some of the lessons-learned from that mockumentary, especially the need to have a light touch on the community even in the face of official hostility. […]

Multicolor Off-Grid Christmas Lights

Old School Tech has released the final article in the off-grid Christmas light series, this time with a discussion about multi-color lights, their analysis and a useful generic design procedure. Homeschoolers will find a nice wrap-up in this article with a more scientific process that makes a great science project, linking science, electronics and statistics. […]

Red Off-Grid Christmas Lights

Old School Tech has published the latest in their off-grid emergency lighting series, this time on the adaptation of red LED Christmas lights for off-grid DC operation. Red LEDs have an important application to community defense purposes, in that they help preserve night-vision. As such, they are uniquely useful for use in an operations center […]

Extracting Potash

Old School Tech has released an article about extracting raw potash from wood ashes. Future projects will refine and use this raw product for interesting things. Not only does this project make a great homeschool chemistry lesson, it also sets the stage for some chemical processes of interest to self-sufficiency enthusiasts. As mentioned in that […]

Emergency Solar Christmas Lights

Old School Tech has posted an article about converting Christmas LED light strings into emergency DC lighting for use directly from an off-grid battery array, no inverter required. This kind of lighting is great for safety-critical areas and allows a reliable backup source of lighting when other sources fail. Annoying AC flicker is also eliminated. […]