<![CDATA[SoliForum - 3D Printing Community — 3DGreat Heated bed w/ Marlin?]]> https://www.soliforum.com/topic/16450/3dgreat-heated-bed-w-marlin/ Fri, 18 Aug 2017 08:04:12 +0000 PunBB <![CDATA[Re: 3DGreat Heated bed w/ Marlin?]]> https://www.soliforum.com/post/137231/#p137231 Hello, just some info. I bought this one:
https://www.aliexpress.com/item/Ultimak … 0.0.pIXCGH
Looks identical. and the thermistor is just a 100k general version. So no tweaks needed there, and it works perfectly.
I used this for the build: https://www.instructables.com/id/Ultima … d-Upgrade/

]]> Fri, 18 Aug 2017 08:04:12 +0000 https://www.soliforum.com/post/137231/#p137231 <![CDATA[Re: 3DGreat Heated bed w/ Marlin?]]> https://www.soliforum.com/post/135777/#p135777 jagowilson wrote:

No problem. Let me know. I did some basic research and there's a chance that it's not a thermistor, but rather a thermocouple. If that's the case you'll need an external amplifier to use it...


That is in fact the case with this bed. I've seen people use thermocouples on other opensource designs with some success so I'll be starting there. As to the type of thermocouple it is, I can't say, but after speaking with the manufacturer, I have a better idea on which route to take.

colcred wrote:

Hi, Recently bought used Ultimaker Original updated with 3DGreat heated bed, all was working great until I foolishly updated the program (I couldn't resist) now I get Err:MAXTEMP BED, I notice the bed temperature is now showing H100/0degreese, I'm sure it used to show the now temperature first and the maximum afterwards. can anyone help?
Thank you.

As for your post - DO NOT hijack threads by piggybacking your issue - there is plenty of space on the forums for firmware related issues and I suggest you start your own thread, or better still, looking for a thread that has solved your specific issue.

]]> Wed, 31 May 2017 20:45:49 +0000 https://www.soliforum.com/post/135777/#p135777 <![CDATA[Re: 3DGreat Heated bed w/ Marlin?]]> https://www.soliforum.com/post/135719/#p135719 Hi, Recently bought used Ultimaker Original updated with 3DGreat heated bed, all was working great until I foolishly updated the program (I couldn't resist) now I get Err:MAXTEMP BED, I notice the bed temperature is now showing H100/0degreese, I'm sure it used to show the now temperature first and the maximum afterwards. can anyone help?
Thank you.

]]> Mon, 29 May 2017 08:54:27 +0000 https://www.soliforum.com/post/135719/#p135719 <![CDATA[Re: 3DGreat Heated bed w/ Marlin?]]> https://www.soliforum.com/post/135662/#p135662 No problem. Let me know. I did some basic research and there's a chance that it's not a thermistor, but rather a thermocouple. If that's the case you'll need an external amplifier to use it...

]]> Fri, 26 May 2017 21:18:01 +0000 https://www.soliforum.com/post/135662/#p135662 <![CDATA[Re: 3DGreat Heated bed w/ Marlin?]]> https://www.soliforum.com/post/135660/#p135660 I'll pull it from my machine and see if the chip on the underside has any info.

]]> Fri, 26 May 2017 20:07:53 +0000 https://www.soliforum.com/post/135660/#p135660 <![CDATA[Re: 3DGreat Heated bed w/ Marlin?]]> https://www.soliforum.com/post/135620/#p135620 Interesting. Yeah, that likely won't be an existing table. The good news is one can be created but I really can't help any further until I have a datasheet with a beta value and/or a temperature-resistance table. Give me these values and i'll see what it takes to generate such a table for Marlin.

So OP given that it's likely a common thermistor used by Ultimaker, maybe you can use that information to get a model number and/or datasheet for the thermistor.

]]> Wed, 24 May 2017 01:18:49 +0000 https://www.soliforum.com/post/135620/#p135620 <![CDATA[Re: 3DGreat Heated bed w/ Marlin?]]> https://www.soliforum.com/post/135617/#p135617 jagowilson wrote:

Is it still a thermistor, though, obeying Steinhart-Hart? If so, we can build a rough thermistor table from the Beta values in the datasheet. It will be accurate enough for a heat bed. Carl, can you provide any model numbers for the thermistor you had?

I can find absolutely 0 information about this 3DGreat bed. The website has no English translation. http://www.3dgreat.com.

Mine was just an ordinary 100k thermistor I bought off ebay. If you mean the one that was on the bed it was measuring 59K at room temp. That's all I know and no matter what existing table I tried in Marlin it would not work right.

My printer was a CTC dual which is a copy of Makerbots and Ultimakers.

]]> Tue, 23 May 2017 23:41:40 +0000 https://www.soliforum.com/post/135617/#p135617 <![CDATA[Re: 3DGreat Heated bed w/ Marlin?]]> https://www.soliforum.com/post/135614/#p135614 Is it still a thermistor, though, obeying Steinhart-Hart? If so, we can build a rough thermistor table from the Beta values in the datasheet. It will be accurate enough for a heat bed. Carl, can you provide any model numbers for the thermistor you had?

I can find absolutely 0 information about this 3DGreat bed. The website has no English translation. http://www.3dgreat.com.

]]> Tue, 23 May 2017 22:55:03 +0000 https://www.soliforum.com/post/135614/#p135614 <![CDATA[Re: 3DGreat Heated bed w/ Marlin?]]> https://www.soliforum.com/post/135596/#p135596 That bed is made for an Ultimaker. They do not use a standard thermistor on their bed. I had a clone and had so much trouble converting it that I finally bought a standard 100K thermistor and glued/taped it to the bottom of the board and wired it into my new board.

]]> Tue, 23 May 2017 11:56:31 +0000 https://www.soliforum.com/post/135596/#p135596 <![CDATA[Re: 3DGreat Heated bed w/ Marlin?]]> https://www.soliforum.com/post/135595/#p135595 Here it is.

https://www.aliexpress.com/item-img/Fre … 70948.html

]]> Tue, 23 May 2017 02:11:02 +0000 https://www.soliforum.com/post/135595/#p135595 <![CDATA[Re: 3DGreat Heated bed w/ Marlin?]]> https://www.soliforum.com/post/135594/#p135594 I can't find any info on that bed from the keywords you've provided. Can you give a product link please?

]]> Tue, 23 May 2017 01:48:25 +0000 https://www.soliforum.com/post/135594/#p135594 <![CDATA[3DGreat Heated bed w/ Marlin?]]> https://www.soliforum.com/post/135591/#p135591 Hey all. I've been using a 3DGreat heatbed but can't seem to get the onboard thermistor to read, forcing me to use an external thermistor. However that solution has been cumbersome and I now need to condense my temp reading hardware.

The thermistor tables in Marlin are reporting all over the place, ranging from -100c to as high as 1200c.

This leads to my question; Is anyone else using this board in Marlin, sprinter, ect. and if so, what are you doing to get the onboard thermistor to play nice?

]]> Tue, 23 May 2017 00:22:51 +0000 https://www.soliforum.com/post/135591/#p135591