Replies: 27 comments 41 replies
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Thank you , so this table is only valid for 1.0A/2.0A and AiO Is it a measured table or calculated table ? |
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it's a calculated table, I have attempted to verify with a temp probe on my multimeter but as you know multimeters aren't accurate over the range of temps we print at. However I have verified the resistance and voltage at each temp against the Semitec datasheet and these correspond to how the printer interprets the temp. |
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Ok will add this table in configuration.h with a define for easy selection |
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Will the table above correct the temperature offset when installing a E3D V6 on a Da Vinci 1.0a? |
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yes this is for use on a 1.0a, if you're using the supplied e3d thermistor. Open configuration.h add it into one of the user thermister tables I think 2 is empty. And define this as the thermistor earlier in the config. If you get stuck I'll post my config. Unless luc has added it as a pre defined (sorry luc I've not reviewed the code for a while) |
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@zombiRon no it is not yet integrated still added the #Waiting to be processed label - I have been quite busy lately sorry |
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@ZeekWorld did you managed to use the table ? |
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@ZeekWorld, If you look at the code, there is a if MODEL==0 clause before where you have pasted the table
Look a little further down and paste it into the following else section. You have a model 1 device as far as repetier is concerned, so its tying to use an empty table.
Hope this helps.
… On 13 Jul 2017, at 08:08, Luc ***@***.***> wrote:
@ZeekWorld did you managed to use the table ?
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@luc-github I am going to give it another shot tonight. I will flash the Da Vinci tonight and let you both know how it goes. Note: Something I found out after hours of reading and looking for more information is that the original e3d V6 has the Semitec 104GT2 thermistor which @zombiRon created the table for, but I may have purchased a clone of the e3d V6 which most of the threads online refer to a NTC 3950 thermistor with very similar characteristics. So I am not sure if having a different thermistor will make any difference even both are 100k. |
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This table will not work with the NTC thermistor, the tables are very specific to each thermistor. Table 5 is the closest you'll get to the generic NTC thermistors that come with the clone hot ends.
Regards,
Aaron
… On 13 Jul 2017, at 15:44, ZeekWorld ***@***.***> wrote:
@luc-github I am going to give it another shot tonight.
@zombiRon Thank you for the explanation. I believe after trying last night I realized per your message I was missing the #if model==1 you described.
I will flash the Da Vinci tonight and let you both know how it goes.
Note: Something I found out after hours of reading and looking for more information is that the original e3d V6 has the Semitec 104GT2 thermistor which @zombiRon created the table for, but I may have purchased a clone of the e3d V6 which most of the threads online refer to a NTC 3950 thermistor with very similar characteristics. So I am not sure if having a different thermistor will make any difference even both are 100k.
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Thanks Aaron. |
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I just installed my new style e3d v6 hotend with the cartridge style thermistor, I got it from an authorized dealer so it's not a clone. I used @zombiRon 's custom table and when I set the extruder temp in the LCD menu to 265c it never gets there, it stops at around 257c. it's definitely hot enough to feed and melt ABS all day long but I'm not convinced it's reporting the correct temp and I can't verify with my temp gun because it wigs out with reflections. Am I missing a setting? PID tuning? where are these resistors that I need to check for 1k or 4k7 or 10k? I'm proficient with soldering so If I can bump off or replace them to use the standard table that's cool. Also, this is a 1.0A printer. |
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Hi reklawdiov, |
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@zombiRon I'll check with the multimeter when I get home after work but here is my config.h file, thanks for checking! |
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Your config is good, only other thing I can think of is your EEPROM settings, here are the relevant settings from my EEPROM... Temp Ext PLA: 180.000 |
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@zombiRon that seems to have done it! I finally got a chance to test and tweak today, it was using "slowbang" heat manager 3 and the PIDs were way off. I've updated and am able to hit 270C without a problem (so far) other than the menu maxes out at 270 instead of 280 that's set as max in the printer settings. probably for the best since it says not to go above 285 I think for the thermistor. |
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Please excuse my ignorance as I'm probably not thinking clearly and missing something simple. Currently running Repetier 92.10 on a davinci 1.0a. I've been attempting to build a proper table for my unknown thermister in my current hotend as it reads way low (reads 280C @ 240C as measured by a thermocouple.) |
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@jnowak1054 you have a 1.0a so your model must be MODEL 1 you just need to modify the lines : |
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What do I need to modify? I have set my Model at 1, define EXT0_TEMPSENSOR_TYPE 5. Upload to printer. Bed goes to 100 as set temp. Nozzle goes to 260 then decouples. reset and decouples at 237. Setpoint is 285. I tried opening the above Config zip file to check. When I unzip I get a Configuration.h file Arduino will not open it so I am unable to see that configuration. |
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I was able to open the zip file in wordpad. It is quite different than what I have in my config tables. |
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Thanks! Now that I see it, I also see my question was already answered above. Thanks again! |
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This reminds me, I've not been active for a while; luc, your corexy code works too. I converted my davinci to a custom corexy. Happy to share the drawings if anyone is interested. |
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Always interested! |
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@zombiRon I'll second sisensee's interest, would like to see what you've done. |
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Here's the mod on Thingiverse https://www.thingiverse.com/thing:4492584 |
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I am missing something here. I copied the table given by zombiRon in first post to my table2 (line #735 in Command h) I first deleted the existing table. I then changed my EXT0_TEMPSENSOR_TYPE to 7 as explained. Saved and uploaded the configuration. When I try to connect Repetier to use printer I get an fatel/error. I seem to be able to connnect but the fatel/temp sensor error will not let me proceed. |
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You are using a genuine Semitec thermistor? |
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I believe so. I bought a genuine E3D-V6. |
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ok, start with multimeter and make sure thermistor is reading correct resistance at room temp when not connected to printer. You can find the semitec data sheet via everyone's favourite search engine. |
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Thank you. I will do that. |
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Pretty sure that it is reading correct. The datasheet I found on Semitec shows a very large range of temps. It shows, 104NT-4 10c 208.8 kΩ My ambient temp =20.5C reading 113.2 kΩ For some reason E3D does not have a datasheet. They do sell a replacement thermister Semitec 104Gt. Their page says, "Cartridge type thermistors use a Semitec 104NT thermistor, potted in a cylindrical stainless steel cartridge with a high conductivity ceramic based adhesive. " So I found the datasheet on 104 NT. |
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that looks good, so now measure the internal resistance of the printer. With the printer OFF, measure the resistance between the terminals where you would connect the thermistor to. |
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1.091kΩ at the thermister connector. |
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So does this indicate an issue in the wiring/board? Seems odd I was able to print yesterday until I loaded the temp table. Not saying that my temps were correct, just that it did work. Now it seems as though my printer has hit a "hard stop" I can not load or unload filament, it never goes to the temp rising. |
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I traced the wires from the thermister connector to the small board. The connectors on the small board to determine the correct wires going to the motherboard. Black and orange wires. All wires test good. continuity through the pin connectors on the small board. I get nearly the same reading at the pins on the motherboard 1.027kΩ. Now I'm lost. Again..... |
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After the last post I went back up and read this, "This table is for use with the 1.0a and any other Davinci models that have a single 1kohm resistor instead of the 4k7 and 10k as found on the 1.0 models. " Does that indicate that I am getting correct resistance readings after all? |
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Hardware is fine, and this confirms it's a 1.0a model. This means it must be configuration. I suspect the problem is WHERE the patch is inserted is the issue. |
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I agree. |
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I set the EXT0_TEMPSENSOR_TYPE to 5 and reloaded the configuration. Now I am able to heat the nozzle again. But the 5 does not correspond to the correct table. I also made changes to the EEPROM settings through Repetier to the settings refereed above. |
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If you scroll to the bottom of the file you'll see there's an override. This was just a test config, I wouldn't use it full time. But now you know it works you can copy paste (using Arduino IDE not word or wordpad they introduce smart quotes) into a fresh copy of the source and make a permanent config. |
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I'll have to try to figure that out. At least I have a config that I am certain works. I'll save it and should be able to always get back if needed. I did google the smart quotes you mentioned. Learned a little, not enough to fix the issue. I am very impressed with the time and patience that you have put into helping me with this. It's very frustrating for me to know that there is a problem, have an idea what it is, but not be able to fix it. I'll compare the working config that you just sent to one of the non working ones and try to see the difference. |
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Well, I opened the test config that you provided in Arduino. Then opened the config that is refereed to in the thread by Luc. Copied the table from the test config to the NUM_TEMPS_USERTHERMISTOR2 36. changed to EXT0_TEMPSENSOR_TYPE to 7 above. Loaded config to my printer. Same results as previously. Very frustrating! There seems to be something missing, earlier in the thread Luc mentions to leave EXT0_TEMPSENSOR_TYPE to 5 and make changes to lines 737, & 738. But no explanation what to change them to. Most confusing is why changing EXT0_TEMPSENSOR_TYPE to 7 does not work. Here is my newly made config if interested, |
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Configuration.h.zip |
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YAY! You got it working. Again thank you very much. |
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I've generated a thermistor table for the Semitec 104GT-2 as shipped with the E3D v6 hotend, this covers the original glass and the new cartridge type.
This table is for use with the 1.0a and any other Davinci models that have a single 1kohm resistor instead of the 4k7 and 10k as found on the 1.0 models. I know some users have removed the 10k and used the standard Repetier tables. You could swap out the 1kohm for a 4k7 and use the generic tables, but cut and paste is much easier.
Can this be added to the firmware as an option for users who have upgraded their hotends/thermistors please?
#define EXT0_TEMPSENSOR_TYPE 7
#define NUM_TEMPS_USERTHERMISTOR2 36
#define USER_THERMISTORTABLE2 {{284, 2400},{324, 2320},{371, 2240},{426, 2160},{491, 2080},{566, 2000},{655, 1920},{759, 1840},{880, 1760},{1020, 1680},{1181, 1600},{1363, 1520},{1566, 1440},{1789, 1360},{2028, 1280},{2278, 1200},{2532, 1120},{2781, 1040},{3018, 960},{3234, 880},{3424, 800},{3587, 720},{3719, 640},{3824, 560},{3904, 480},{3964, 400},{4007, 320},{4037, 240},{4057, 160},{4071, 80},{4080, 0},{4085, -80},{4088, -160},{4090, -240},{4091, -320},{4091, -400}}
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