Gabriel writes in to share his homemade heliostat project. The heliostat is the first step in his solar energy experimentations, and it is designed to keep a mirror aligned so that it keeps the reflection of the sun onto a specific point. Once the energy is focused on that point, it can be harnessed by other devices such as a solar oven. A single unit can be useful, however it gets really fun when you start adding multiple devices to concentrate a bunch of energy on a small spot.
- The SunFlopper: a mini heliostat made from a floppy drive
- The light sharpener – 12 foot solar collection dish