I've created this holder to protect my filament, it has an integrated DHT22 humidity sensor wihch is displaying the humidity on a led bar using an Arduino Uno. When the humidity is to high I know that the silica gel must be replaced/dryed.
For the body I've used 2mm hobby glass (plexyglass), the rest of the componets were printed in PLA, the joints were sealed with a hotglue gun.
The filament holder was printed in 3 pieces, the two rings and the shaft, the shaft is fixed with 4 3mm wood screws to one of the rings, and it's resting on two bearings, this provides a smoth rotation.
The inner and outer supports are fixed with 6 M3 screws.
List of additional parts used:
- arduino Uno
- DHT22 sensor
- a bounch of jumer cables
- led bar
- 2mm hobbyglass, 2 50x50mm sheets
- 12x8x3 bearings, 2 pieces
- M3 screws, 6 pieces
- M3 nuts, 6 pieces
- 3mm wood screw, 4 pieces
Keep it safe, keep it dry :)