a nightlight — and bookmark — that lights up when you dock your book.
duration 45 minutes
the light sensor triggers the heart LED when it's blocked by a book.
components we used
light sensor on the side detects if a book is on the stand
heart LED that shines pink light
made with recycled materials
ready to make a bookmark light?
1. Heart LED
2. Light sensor
4. Coin cell battery
5. Paper fasteners
6. Chocolate boxes
8. Conductive tape
9. Foam board or cardboard
Unfold the chocolate box and place the light sensor and battery board on the box as shown.
Cut out the shape from the template and fold it in the middle to make a holder for the heat LED
Cut out a piece of paper to wrap around the chocolate box and decorate it as you like
Plan the circuit
Build the circuit on the box using conductive tapes.
Cut the two triangles on the left as shown. Then cut a slot the top right triangle for conductive tapes to go through.
Attach the light sensor on the outside of the box using paper fastener and connect it to the circuit using conductive tapes.
Use paper fasteners to attach the heart LED on the holder you just made and connect it to the circuit with conductive tapes.
Insert the LED part through the slot on the chocolate box.
Cut out a piece of foam core as the shape of melted chocolate, and curve out a triangle in the middle to fit in then chocolate box.