Re: Cherry Pi III Is Available November 09, 2015 02:53PM |
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Re: Cherry Pi III Is Available November 25, 2015 03:01PM |
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Re: Cherry Pi III Is Available November 26, 2015 01:24AM |
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Re: Cherry Pi III Is Available November 26, 2015 06:51AM |
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Re: Cherry Pi III Is Available November 30, 2015 06:13PM |
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Re: Cherry Pi III Is Available November 30, 2015 07:04PM |
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Re: Cherry Pi III Is Available December 01, 2015 04:45AM |
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Re: Cherry Pi III Is Available December 06, 2015 04:49AM |
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Re: Cherry Pi III Is Available January 24, 2016 10:04PM |
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Re: Cherry Pi III Is Available January 25, 2016 05:52AM |
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Re: Cherry Pi III Is Available February 12, 2016 05:00AM |
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Re: Cherry Pi III Is Available February 12, 2016 12:38PM |
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Re: Cherry Pi III Is Available February 12, 2016 12:49PM |
Registered: 9 years ago Posts: 1,159 |
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yawk-oh
Hello everyone! This is my first post on here -- greetings from a wet and dreary Finland.
First off, a very big thanks to AndyCart for a very smart delta implementation. I stumbled across the Cherry Pi after I started thinking about building a delta printer to complement my Turnigy Fabrikator.
I have most of the required parts handy, just need to get me some alu tube and springs while I wait for the 8mm balls to arrive (decided to drill the 4mm holes myself, as the linked stop motion balls are actually quite expensive to be shipped here... I have a bench drill, so I'll just fabricate a drilling jig using this instructable: [www.instructables.com])
I am going to build the frame with some 2020 "B-type" extrusion from Motedis, and after printing the carriage for a preliminary test, I can confirm that the stock carriages and small delrin wheels work nicely with this extrusion (see image below)
Anyway, I have a question: I have some 2040 extrusion that I need to use up (It doesn't work in the OX CNC I was going to build, as I need proper V-slot for that), so I was wondering whether I could use the 2040 as the base triangle for the Cherry Pi build? Can I just use any delta printer foot model on e.g. Thingiverse, or will I run into possible problems, such as belt alignment?
Thanks in advance!
Re: Cherry Pi III Is Available February 12, 2016 12:51PM |
Registered: 9 years ago Posts: 67 |
Re: Cherry Pi III Is Available February 12, 2016 01:19PM |
Registered: 10 years ago Posts: 515 |
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SnmG
Hi Andy,
great Job
I have a question. Do you have any instruction for Cherry Pi iii ? Or do you know where I can get some more information about the instructions / first steps ? (videos, documentations...)
I would be very glad about more information.
Kind regards,
Sinem
Re: Cherry Pi III Is Available February 12, 2016 01:31PM |
Registered: 8 years ago Posts: 2 |
Re: Cherry Pi III Is Available March 31, 2016 03:40AM |
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Re: Cherry Pi III Is Available April 19, 2016 03:55PM |
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Re: Cherry Pi III Is Available July 24, 2016 06:14AM |
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Re: Cherry Pi III Is Available July 24, 2016 07:13AM |
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Re: Cherry Pi III Is Available July 24, 2016 08:32AM |
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Re: Cherry Pi III Is Available July 24, 2016 11:42AM |
Registered: 10 years ago Posts: 327 |
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nka
You might want to look at the BLTouch for the calibration, its a nice little package
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Matt,Wheatley
Hi Les, I use the differential IR and optical sensors for the end stops. I hardly ever have to recalibrate.
[drive.google.com]
[drive.google.com]
Regards,
Matt
Re: Cherry Pi III Is Available July 24, 2016 12:38PM |
Registered: 9 years ago Posts: 67 |
Re: Cherry Pi III Is Available July 24, 2016 07:07PM |
Registered: 10 years ago Posts: 14,672 |
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Pointy
As it's well over a year since I started my CP III, I think it's time to dust of the cobwebs and get it finished.
From memory it's pretty much ready to go, I just have to fit the heated bed and finish the new belt driven extruder. I also remember it being a real pain to calibrate, so I think a Z probe is in order, After catching up with 20 odd pages of this thread, it seems there are 2 sensible options, DC's mini IR board or the inductive sensor. The inductive sensor looks really big and heavy and is going to be harder to get close to the nozzle than DC's board, so at the moment I am swaying towards the latter. Do you have a CAD model or Tech drawing of your board Dave, so I can see how I can mount it?
I have seen Aluminium Corners mentioned, are they just direct replacements for the CP III, does anything need adjusting if I use them?
I saw and interesting blog post about using A3144 hall effect sensors as end stops, anyone else tried them? As they are really cheap I think I might get some to play with.
Lets see if we can keep the build time under 2 years.
Regards,
Les
Re: Cherry Pi III Is Available July 25, 2016 04:30AM |
Registered: 10 years ago Posts: 327 |
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dc42
I attach an OpenScad model of the IR sensor. There are some designed for printable mounts linked to in the fitting instructions at [miscsolutions.wordpress.com].
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dc42
I have the Robotdigg 2020 aluminium corners. They look very similar to printed corners, however my previous printed corners were for 1515 extrusion, so I can't say whether they are direct replacements for standard printed 2020 Kossel corners.
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dc42
I have found microswitch endstop sensors to be entirely adequate and very reproducible - but I guess it depends on the quality of the microswitch and how you use them.
Re: Cherry Pi III Is Available July 25, 2016 10:08AM |
Registered: 10 years ago Posts: 327 |
Re: Cherry Pi III Is Available July 25, 2016 02:25PM |
Registered: 10 years ago Posts: 14,672 |
Re: Cherry Pi III Is Available July 28, 2016 01:24PM |
Registered: 10 years ago Posts: 327 |
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dc42
There are no traces near the top edge of the IR sensor. However, you should make sure that the ground plane on the underside of the board cannot short against the heatsink.
Re: Cherry Pi III Is Available July 28, 2016 04:00PM |
Registered: 10 years ago Posts: 14,672 |
Re: Cherry Pi III Is Available July 30, 2016 08:26AM |
Registered: 10 years ago Posts: 327 |
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dc42
Les, how big is your printer? If it isn't too small, you could consider using a mains-powered bed heater (easy to do safely on a delta), then you can use a single smaller PSU and fit both the electronics and the PSU under the bed as I do: