51 Reply by brandon

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Re: Temperature dropping out

Okay, I got lucky and happened upon the DM-310 multimeter that my dad gave me twenty years ago - have not seen it in at least ten years.

I set it at 200 and measure the leads coming from the heater: 3.1
I just did the same thing to my thermistor leads where they connect to the board and I got no reading.
I switched it over to continuity only and got no response.  Not sure if there should be one from the thermistor or not but I assume so.

Therefore, since I know that the wire was good that I replaced it with (I tested it), I should have heeded the warnings of so many before me and gotten multiple thermistors because it looks as though I somehow man handled that one to death.

I will be getting that screw-in thermistor in a week or so and I guess that I wait until then to finish this.

2 Lessons learned: a) get a decent multimeter before messing with any of this b) buy more than one thermistor

Hopefully <fingers crossed> when the other thermistor gets here my life will be complete - unless of course that heater reading is totally bogus.

52 Reply by elmoret

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Re: Temperature dropping out

That heater reading is exactly what I expect.

I=V/R - I=12/3.1: 3.87 amps, and its a 40 watt heater so that's all good.

Your thermistor, or thermistor wiring, is bad.

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53 Reply by brandon

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Re: Temperature dropping out

Okay, good to know.  I assume the same thing about the thermistor as I have changed out the wires twice.  Hopefully the new one will make everything happy.

54 Reply by jagowilson (edited by jagowilson 2015-02-04 03:59:17)

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Re: Temperature dropping out

Watch this video just to be sure you're doing it all correctly. http://youtu.be/xr02pG58gaU

You don't have to make the hooks he talks about for the ferrules just feed the wire in and crimp it well.

55 Reply by brandon

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Re: Temperature dropping out

Yes, that was one of the resources that I used before I assembled it.  That thermistor was jsut so fragile.  I am sure that the screw in thermistor will work better for me.

56 Reply by fdm_process

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Re: Temperature dropping out

I am having this problem after the update as well, but I think what happened to me is that I cranked the temp to 300C and I saw some smoke and bubbling coming off my heater cartridge.. So I think I burned that out. My prints get up to temp and hold until the middle of the second layer, then it just drops off.

57 Reply by brandon

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Re: Temperature dropping out

I am sure that a lot of people here are more qualified than me to answer this, but maybe try following the steps I went through on the heater: checking voltage on the pins coming out from the board and checking the resistance of the heater itself.

58 Reply by fdm_process

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Re: Temperature dropping out

brandon wrote:

I am sure that a lot of people here are more qualified than me to answer this, but maybe try following the steps I went through on the heater: checking voltage on the pins coming out from the board and checking the resistance of the heater itself.

My heat wasn't dropping off like this until I tried to flash the updated firmware. Previously I had a steps/mm issue that I solved, then when I tried to update (which didn't take) my heat started dropping out like this. I'm about ready to give this machine a viking funeral.

59 Reply by brandon

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Re: Temperature dropping out

Yup, I have been there many times myself over the last couple of months.  There are times where I have to completely walk away from it for a week or so.

But I am so close to getting it right...

60 Reply by brandon

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Re: Temperature dropping out

Finally got my screw in thermistor from printed solid in.  "Great" you might say except that apparently something is wrong with it as I can not get a reading across the terminals at all.  I double checked all of the wiring then finally pulled the thermistor and read it at the connector.  No Ohm reading, no continuity, nothing.

You have got to be kidding me.

61 Reply by brandon

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Re: Temperature dropping out

Okay, it was the connector on the thermistor.  Took it off and attached the wires sans connectors and it has started working. 

first print in progress.  Keep your fingers crossed.

62 Reply by brandon

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Re: Temperature dropping out

No luck, no luck at all.  I will attach the screen shot but it is doing the EXACT same thing that it was doing before.  Starts beautifully and then dies after a few minutes.

In two weeks I have not solved anything.

Temperature curve attached.

Anyone?

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63 Reply by wardjr

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Re: Temperature dropping out

Cold extrusion error is most likely a bad wire or loose connection.  As the extruder wiggles around it is causing this error.

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64 Reply by brandon

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Re: Temperature dropping out

Okay, fair enough, but I have replaced every wire within the thermistor line twice and tested them for continuity more times than I have hugged my children.

Any suggestions?

65 Reply by wardjr

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Re: Temperature dropping out

Can you post a picture of the connectors?
Also (and forgive me if we've covered this) have you done anything on the heater side of things?
What version of firmware are you using?  E3d?

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66 Reply by brandon

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Re: Temperature dropping out

Okay, working on that.  I have to wait until my phone charges so that I can use the flash.

I did put an E3D on it and changed the firmware successfully - posted on page 2 I think - please feel free to look at it closely.

67 Reply by wardjr

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Re: Temperature dropping out

I think you downloaded the M600 version and you want
This one. 
https://github.com/ozadr1an/Solidoodle- … guration.h
I think you are running into a problem with the filament alarm section that is in the M600 version.

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68 Reply by brandon

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Re: Temperature dropping out

I just downloaded the firmware that was in the instructions.  I will give this a shot.

69 Reply by wardjr

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Re: Temperature dropping out

Another user had the same problem and this was the fix.
http://www.soliforum.com/topic/9691/hel … nt/page/3/

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70 Reply by brandon

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Re: Temperature dropping out

Okay, so that was a version that was jsut released then.  No wonder I had the wrong one.  Glad they fixed it.

It has been printing for 8 minutes now.  The print has about 30 minutes left, but that is at least a few minutes longer than it has printed thus far.

71 Reply by brandon

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Re: Temperature dropping out

FINALLY!!!

Well it looks like that new firmware version fixed it.  Here is my first completely printed part!

Thank you all for your help!

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72 Reply by wardjr

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Re: Temperature dropping out

Glad you finally figured it out.

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