Installing safety system on my printer October 01, 2015 10:00AM |
Registered: 8 years ago Posts: 6 |
Re: Installing safety system on my printer October 02, 2015 02:07PM |
Registered: 9 years ago Posts: 569 |
Re: Installing safety system on my printer October 06, 2015 01:37PM |
Registered: 10 years ago Posts: 17 |
Re: Installing safety system on my printer October 06, 2015 01:47PM |
Registered: 10 years ago Posts: 14,672 |
Quote
powool
I'm thinking of implementing a secondary safety arduino that is programmed as simply as possible to shut down as much as it can (extruder heater, bed heater, stepper motors) under the following kinds of conditions:
- thermistor goes open circuit (e.g. wire break)
- extruder heater continuously on for more than X seconds (have to experiment - depends on PID values, etc)
- don't receive a heartbeat signal from main printer controller (requires change to printer firmware)
- shutdown signal - button or from the main printer controller?
- smoke detection signal
There's a lot of dangerous failure points in the circuits in our 3D printers - I've had a few happen while watching the printer - hate to think what would have happened had I not been there.
Re: Installing safety system on my printer November 02, 2015 04:39AM |
Registered: 8 years ago Posts: 3,525 |
Re: Installing safety system on my printer November 02, 2015 09:27PM |
Registered: 16 years ago Posts: 80 |