Playground spool alarm by fede2

Last crawled date: 2 years, 12 months ago

playground_spool
Alarm system for your 3D printer spool, to let you know of finished or failed prints, based on Adafruit's Circuit Playgroud
Github repo: https://github.com/fede2cr/playground_spool
Thingiverse: https://www.thingiverse.com/thing:1920690
Description
The project is composed of two parts:
A 3D printed adapter to attatch a Circuit Playground plus a battery, to a 3D printer fillament spool.
Software for the Playground to monitor the rotation of the spool by using the accelerometer. Once the rotation stops, either the printer finished the job properly, or something like a clog in the extruder made a print fail.
Parts
playground_spool_v1.stl: First prototype, it fits fine one some brands of spool, but not all
playground_spool_v2.stl: Second try. Bigger fillet in the bottom, 150mAph lipo battery pocket, reinforcement for the playground bumper. This version is recommended.
playground_spool_v3.stl: 3rd. Fillers in the battery slot for better fit, the playground bumper went up because I couldn't get it in with the previous version, and also the reinforcent went a bit down.
Instructions
Print this parts with support using a semi-flexible fillament, with the playground bumper facing up.
Load the software into the Circuit Playground
Put the Playground inside its bumper in the 3d printed piece, connect the battery and tuck in it's pocket
Put the 3d printed part inside the fillament spool and start a new print
Once either the print finishes, or there is an extruder malfunction, the Playground will detect loss of rotation (LOR) and beep to get your attention
TODO
The battery can be tighter in the pocket
The pocket for the spool holder could be smaller for less material
Wishlist
To average the rotation speed, and then indicate visually if it's rotating faster or slower than the average. Eye candy.