Lowtech Graph lists low-tech options for every need of a home. Here you can compare them, find tutorials to build them, and link them together into a circular system. Why low-tech?

Daylighting

Lighting rooms with the sun rather than with lamps. How much arrives depends on the size and placement of the openings, and on which way the room faces. The options differ in whether they work with the windows the house already has or bring light to a face the sun never reaches.

Solutions

• Daylight-factor window sizing and placement: Deciding the size and position of each window from how much daylight each room needs, rather than from habit. A simple calculation shows where light will fall a
• Motorized heliostat mirror (north-facing daylighting): A mirror on a motorised mount that follows the sun and reflects its light into a north-facing window. A room that never gets direct sun receives daylight and a