Make a coaster that lights up when your cup or glass is placed on it. via instructables

For a project at school , we had to design a light fixture that uses pleated plexiglass.

In the beginning it was thought to make a coaster that lights up when the glass is empty or nearly empty, so can be used in a restaurant, cafe, … the coaster to see if anyone wants to order a drink.

For this, however, would require a non- gate in order to detect this. This I have unfortunately not enough knowledge to do this . Therefore, it was chosen to highlight the luminaire as a glass is placed on the coaster .

In this Instuctable I show how I made the coaster .

Laser files are added later

This is a list of the materials used

Plexiglas protective cover
Plexiglass base
MDF sides lasered
MDF top and bottom
Thin wire (painted)
Button cell battery holder
Button battery ( CR2430 )
LEDs 3mm
push
screw M3x6
nut M3
aluminum holder

This is a list of used tools

soldering iron
soldeertin
cross Screwdriver
Needle nose pliers
Pliers
file
Super Glue
Two-component adhesives

Full tutorial