Help me with my doubts on buying a Omerod2 November 24, 2014 10:50AM |
Registered: 9 years ago Posts: 32 |
Re: Help me with my doubts on buying a Omerod2 November 24, 2014 11:04AM |
Registered: 9 years ago Posts: 46 |
Re: Help me with my doubts on buying a Omerod2 November 24, 2014 11:21AM |
Registered: 9 years ago Posts: 19 |
Re: Help me with my doubts on buying a Omerod2 November 24, 2014 11:42AM |
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Re: Help me with my doubts on buying a Omerod2 November 24, 2014 01:57PM |
Registered: 9 years ago Posts: 102 |
According to my information yes.Quote
Vizual54
The Omerod seems like a really nice machine and better in almost every way so the choice should be easy. It has larger build volume, a better processor with ethernet connectivity which in my opinion is a great plus, seems pretty easy to maintain and it has reasonable price. The forum seems active and at least for the Ormerod mk1 there has been quite a lot of improvements developed and made public here on the forum. DC42 seems to be doing a great job with the firmware (and other things) but are RRP pulling anything of the firmware updates to the main branch?
I saw some documentation about a dual nozzle mod.Quote
Vizual54
Though it doesn't have dual nozzle and the upgrade kit that has been promised has not been released yet.
After three weeks after starting to build that thing in the evening after my dayjob i can say that it prints pretty well. I just switched it on today and printed. It goesQuote
Vizual54
One thing that holds me back the most is that im afraid I need to constantly tinker with the machine every time I'm about to print something. Don't get me wrong here, I love to tinker with stuff and i know that there isnt any maintenance free printers. I'm in no doubt that I will be able to assemble the printer tune it and make it work. I also looking forward to to it. What I'm worried about is that if leaving the machine turned of for a few weeks and then need to print something I have to spend a evening trying to make it work.
That was my main concern also. I haven't done to tall prints right now to report. But after having seen the construction build up i was happy with what i saw.Quote
Vizual54
Also is the cartesian-xz- head construction that much of a problem as some people say? Vibrating build platform, tall objects shaking and tipping over?
Hope you can help me getting over my concerns.
Re: Help me with my doubts on buying a Omerod2 November 24, 2014 02:07PM |
Registered: 10 years ago Posts: 14,672 |
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tstone
I saw some documentation about a dual nozzle mod.
Re: Help me with my doubts on buying a Omerod2 November 24, 2014 02:35PM |
Admin Registered: 13 years ago Posts: 41 |
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dc42
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tstone
I saw some documentation about a dual nozzle mod.
I wrote a blog entry on how to do it, see my signature at the bottom of this message for the link. It's not difficult. I think RepRapPro also has something in the pipeline.
Re: Help me with my doubts on buying a Omerod2 November 24, 2014 05:06PM |
Registered: 9 years ago Posts: 395 |
Re: Help me with my doubts on buying a Omerod2 November 25, 2014 06:07AM |
Registered: 9 years ago Posts: 32 |
Re: Help me with my doubts on buying a Omerod2 November 25, 2014 06:19AM |
Admin Registered: 13 years ago Posts: 41 |
Re: Help me with my doubts on buying a Omerod2 November 25, 2014 07:48AM |
Registered: 10 years ago Posts: 14,672 |
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Vizual54
@dc42
I had read your blog about the dual nozzle conversion, though the soldering on the processor board feels a little unconfy.
Re: Help me with my doubts on buying a Omerod2 November 25, 2014 07:53AM |
Registered: 9 years ago Posts: 395 |
Re: Help me with my doubts on buying a Omerod2 November 25, 2014 06:18PM |
Registered: 9 years ago Posts: 102 |
I think its better get accustomed to a single head printer there is still a lot to learn. Get your printer with one nozzle printing and then you can think about adding another... :-)Quote
Vizual54
Oh, there I've said it. Only question is then if I should wait until the dual nozzle support is out.
Re: Help me with my doubts on buying a Omerod2 November 25, 2014 07:20PM |
Registered: 10 years ago Posts: 780 |
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dc42
One solution that occurred to me just now is to connect the second hot end thermistor to the heated bed thermistor pins on the Duet, and the heated bed thermistor to the DueX4 board hot end thermistor pins. Then add support in the firmware for a configuration gcode to deal with this change. The heated bed thermistor reading is less critical and less affected by noise because of its lower value. I think I'll add this configuration option in my next firmware release.
Re: Help me with my doubts on buying a Omerod2 November 26, 2014 05:41AM |
Registered: 10 years ago Posts: 14,672 |
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appjaws1
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dc42
One solution that occurred to me just now is to connect the second hot end thermistor to the heated bed thermistor pins on the Duet, and the heated bed thermistor to the DueX4 board hot end thermistor pins. Then add support in the firmware for a configuration gcode to deal with this change. The heated bed thermistor reading is less critical and less affected by noise because of its lower value. I think I'll add this configuration option in my next firmware release.
This sounds really good, I don't know why I didn't think of it.
I think this will solve the problem and report accurate temperatures for the second nozzle, I won't need to modify my boards
Looking forward to your next release, will it include all of zpl's changes? especially the external fan control and the pause and resume action.
Re: Help me with my doubts on buying a Omerod2 November 26, 2014 06:17AM |
Registered: 10 years ago Posts: 780 |
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dc42
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appjaws1
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dc42
One solution that occurred to me just now is to connect the second hot end thermistor to the heated bed thermistor pins on the Duet, and the heated bed thermistor to the DueX4 board hot end thermistor pins. Then add support in the firmware for a configuration gcode to deal with this change. The heated bed thermistor reading is less critical and less affected by noise because of its lower value. I think I'll add this configuration option in my next firmware release.
This sounds really good, I don't know why I didn't think of it.
I think this will solve the problem and report accurate temperatures for the second nozzle, I won't need to modify my boards
Looking forward to your next release, will it include all of zpl's changes? especially the external fan control and the pause and resume action.
On the Ormerod 1, the wiring will be a little tricky because the thermistor uses the 2 middle wires of the ribbon cable. So you will need to cut just those 2 conductors at the Duet end of the cable, peel them back a bit, and connect them to a 2-pin header connector to plug in to the DueX4. The conductors are quite thin, so you might want to use some silicone rubber or similar as a strain relief. Make sure you use the correct 2 conductors, otherwise you will end up connecting 12V to the thermistor input via the thermistor! Alternatively, run a separate cable from the bed thermistor to the DueX4. Connecting the second hot end to the bed thermistor input can be done using the separate BED_TEMP pins provided on the Duet (you will need to solder a couple of header pins or a terminal block to those pads on the Duet).
For describing the change to the firmware, I think the M305 code could have an option to specify the thermistor channel. All the obvious parameter letters are already used in the M305 command, but X Y Z and J are free. So perhaps M305 P0 X2 would tell the Duet that heater 0 uses thermistor channel 2, and M305 P2 X0 would tell it the converse for the second hot end.
If I do you a special temporary firmware release that swaps the channels, would you like to test this out? I'd like to know whether the noise on the bed temperature is acceptable before I make the changes to M305. My firmware already has cooling fan support. What it doesn't have yet is the code queue for synchronizing fan speed change commands with movements in the queue, or the instant pause facility where moves already in the queue are paused as well as new moves. This is partly because I need to keep the Move code simple pending my next round of changes to it, and partly because the instant pause facility could result in missed steps if it isn't carefully timed. I have already included zpl's pause/resume macro files and networking changes.
Re: Help me with my doubts on buying a Omerod2 November 29, 2014 03:24PM |
Registered: 10 years ago Posts: 36 |
Re: Help me with my doubts on buying a Omerod2 November 29, 2014 05:24PM |
Registered: 10 years ago Posts: 378 |
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denshine
i say dont buy it!
as a starter printer thers to much to do to get it working.
i would go for a ulltimaker or something simular.
Re: Help me with my doubts on buying a Omerod2 November 29, 2014 06:14PM |
Registered: 9 years ago Posts: 395 |
Re: Help me with my doubts on buying a Omerod2 November 29, 2014 06:15PM |
Registered: 10 years ago Posts: 36 |
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jstck
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denshine
i say dont buy it!
as a starter printer thers to much to do to get it working.
i would go for a ulltimaker or something simular.
That's not really a fair comparision, as they are very different products. An Ultimaker is a brilliant printer, and it is dead simple to get up and running (if you get a preassembled one), and generally very easy to use. The downside is it is 2-3 times more expensive than an ormerod (depending on model), spare parts are more expensive, and it is a less open or "tweakable" platform. If you get the cheapest possible Ultimaker (the kit UM1), it is comparable to the ormerod in how difficult it is to assemble and commission. In terms of printing performance (speed and precision), I'd say the UM2 is a bit better than the Ormerod, but not by much.
Comparing the Ormerod 2 to other popular repraps, it is not as "well tried", but it is a quite expandable design that in my opinion performs very well.
If you are not willing to tinker with your printer, you should not get a reprap (of any model). If you do want to modify or expand it, don't get anything but a reprap.
If you want a good, out-of-the-box printer that is simple to setup and use, get the Ultimaker 2 if you can afford it.
Re: Help me with my doubts on buying a Omerod2 November 29, 2014 07:10PM |
Registered: 9 years ago Posts: 102 |
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denshine
i say dont buy it!
as a starter printer thers to much to do to get it working.
i would go for a ulltimaker or something simular.
i wouldent buy a makerbot cuz its to little to do.
ormerod is a fun machine and works realy good when ypu get it going but for a first printer i wouldent rekomend it (not even as a second printer)
Re: Help me with my doubts on buying a Omerod2 November 29, 2014 07:27PM |
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Re: Help me with my doubts on buying a Omerod2 November 29, 2014 08:45PM |
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Re: Help me with my doubts on buying a Omerod2 December 06, 2014 06:20PM |
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Re: Help me with my doubts on buying a Omerod2 December 07, 2014 05:08AM |
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Re: Help me with my doubts on buying a Omerod2 December 07, 2014 05:42AM |
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Re: Help me with my doubts on buying a Omerod2 December 07, 2014 03:22PM |
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Re: Help me with my doubts on buying a Omerod2 December 12, 2014 05:56PM |
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Re: Help me with my doubts on buying a Omerod2 December 18, 2014 07:37PM |
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Re: Help me with my doubts on buying a Omerod2 December 19, 2014 05:52AM |
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