Today I am uploading the lightpad, which I did for my daughter.
Lightpad has a dimension of 47cm/35cm/2.5cm. The work surface is for drawings in A3 format.
In this project, apart from printed elements, I used:
1) Aluminum profiles from an advertising stand - external dimensions of profiles 17x27mm, wall thickness - 1mm
2) 3mm thick transparent plexiglass - I used two layers for hardness. Between them I put a sheet of tracing paper to blur the light. I think milk plexiglass would be better.
3) 3mm furniture back board
4) 12V DC capacitive touch sensor switch
5) 12v DC led strip lights
6) power socket and 12V power supply from old router
Inside, I glued letters printed from fluorescent filament. After switching off the lighting appears the inscription :)
The switch has a dimming option so you can adjust the backlight intensity.
Corner nr.1 is for the switch and the socket.