Can Duet 2 do these things? June 13, 2019 01:37PM |
Registered: 12 years ago Posts: 1,450 |
Re: Can Duet 2 do these things? June 13, 2019 02:29PM |
Registered: 11 years ago Posts: 5,780 |
Re: Can Duet 2 do these things? June 13, 2019 04:11PM |
Registered: 12 years ago Posts: 1,450 |
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the_digital_dentist
It sounds like you need a much quieter way to get a vacuum. I would think that the large surface area means you only need a couple PSI less than atmospheric pressure to achieve the hold-down. You could probably get that very quietly using a centrifugal blower with a brushless DC motor. With a BLDC, about the only way the vacuum would fail is if power failed, and your printer is going to stop anyway.
Here's a printable blower, using a motor from a hard disk drive, that might be able to do the job if you connected a hose to the input side instead of the output.
Re: Can Duet 2 do these things? June 13, 2019 05:44PM |
Registered: 10 years ago Posts: 14,672 |
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leadinglights
A piezo nozzle contact probe that I have been working on has two outputs: One occurs only if a clean contact has been made which meets several criteria; the second if a contact is made but does not meet these criteria - this will allow the nozzle to be lifted to avoid damaging the print surface. Is there anything already in the firmware to support this already? Since this also detects soft plastic on the nozzle tip it would be nice to have a way of re-probing several times until a good contact is found. Some details on [reprap.org]
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leadinglights
A two headed printer mechanism with its own stepper controller. This needs one line to select one head or the other - say high would select the left hand head and low would select the right hand head. An output line would be raised during the change to signal the controller (Duet) not to feed filament. Will this need software or are there already M codes to do this?. Some details on [reprap.org] and a video on [www.youtube.com]
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leadinglights
Heated chamber. This exists only in experiments and CAD designs but consists of a chamber under which the build stage which moves in both X and Y. Requirement is similar to the print head change mechanism, 1 line to raise/lower the chamber and one tosignal when the move is complete. Some details on [reprap.org]
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leadinglights
Vacuum hold down on build stage. This works very well but a way of stopping the print in the event of vacuum failure is needed. Video of the first one at [www.youtube.com] and latest one on the current machine at [reprap.org]
Re: Can Duet 2 do these things? June 14, 2019 05:54AM |
Registered: 12 years ago Posts: 1,450 |
Re: Can Duet 2 do these things? June 14, 2019 06:38PM |
Registered: 10 years ago Posts: 14,672 |
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leadinglights
Thanks David,
Does the duet have support for external I2C - may be helpful for reconfiguring/calibrating the Z sensor controller? If there is, is it 5V compatible?
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leadinglights
Does the Duet support 20 chr X 4 line displays, again at 5V. This to postpone extra costs untill I have everything working.
Re: Can Duet 2 do these things? June 15, 2019 07:28AM |
Registered: 12 years ago Posts: 1,450 |