Out of filament ALARM

thingiverse

This is a straightforward way to know when you're running out of filament. I'm using a momentary switch, specifically a Cherry model, and I've included the dimensions for anyone with a similar switch in mind. The goal is to pair an Arduino Attiny85 with a buzzer, making it sound an alarm as soon as the filament reaches its critical level. Check out this video of the filament alarm in action: https://youtu.be/QGUehV8nUc4 If you're interested in getting your hands on the Arduino code for the Attiny85, just let me know. I'll make it available here or post it to my blog. I also have the schematics and layout ready for anyone who wants to create a PCB using the Attiny85 microprocessor. Here are the files: Arduino code and STL: https://drive.google.com/open?id=0B7dtMeeMPK5rfmE2WlctNEdWZkc1US1TTWFJblYyanJ1SExwczRtX1UyQjhJYTlqUlk2dUE Attiny85 PCB and Schematics: https://drive.google.com/open?id=0B7dtMeeMPK5rfm55TGxFMGdVRXlXcmVkd2I5WVJLcURFbjh3UjlXckNxdjhpYkNVQmd1QkU Attiny programmer layout and Schematics: https://drive.google.com/open?id=0B7dtMeeMPK5rfjgyemtrUUUxRTRSVHZNd0F1U3dLZ1JybXZFbzNkS0VYN2xQbnY4NjNobDg