Yesterday I posted some videos on Instagram of step-by-step instructions on how to build your own pinhole projector to safely view the eclipse on August 21st. In order to make the instructions easier to share, I’ve compiled them all here (well, screenshots from them at least) to help you turn an ordinary cardboard box into a pinhole projector.
For more information on the eclipse check out the NASA website eclipse2017.nasa.gov.
Step 1: Find a cardboard box and cut a white piece of paper to fit the bottom.
Step 3: Cut two holes on opposite sides of the top of the box.
Step 5: Cover one of the holes with some foil and tape down.
Step 7: Use the projector with the sun behind your back, looking through the non-foil-covered hole. The sun should be projected onto the white paper in your box. You might need to move it around a bit to get the sun lined up right.