1 Topic by Professor Membrane

  • Professor Membrane
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Topic: Solidoodle 2 print won't start

I'm running repetier host 1.5.6. The temperature was dropping when I started the print, but now the print won't start and my temperature hovers around 215 where I want it, which is half good. My problem now is that the print never starts, I will wait for about 3 minutes, the bed and extruder will adjust themselves, but no print. Only the following errors...

21:22:17.283 : No start signal detected - forcing start
21:22:17.325 : FIRMWARE_NAME:Marlin V1; Sprinter/grbl mashup for Printrboard FIRMWARE_URL:http://www.solidoodle.com/how-to-2/how-to-update-firmware/ PROTOCOL_VERSION:1.0 MACHINE_TYPE:Solidoodle_2 EXTRUDER_COUNT:1
21:22:17.358 : X:0.00Y:0.00Z:0.00E:0.00 Count X: 0.00Y:0.00Z:0.00
21:22:17.359 : echo:Active Extruder: 0
21:22:17.365 : echo:Active Extruder: 0
21:26:30.493 : Error:Temperature heated bed switched off. MAXTEMP triggered !!
21:26:30.493 : Error:Printer stopped due to errors. Fix the error and use M999 to restart. (Temperature is reset. Set it after restarting)
21:26:34.949 : Printer stopped due to errors. Fix the error and use M999 to restart. (Temperature is reset. Set it after restarting)

This printer used to work great, but after not using it for 6 months, now I power things back on and I've got these issues, please help!

2 Reply by grob (edited by grob 2015-11-25 05:50:25)

  • grob
  • grob
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Re: Solidoodle 2 print won't start

Welcome to the forum!

Step one: don't panic. smile

Looks like you have a thermistor or thermistor cable in trouble - MAXTEMP can trigger if one of them is shorting.

Step two is to try to recreate the problem as best you can, and round down which temperature sensor is faulty.

* Check your temperature graph, make sure it's reporting approximately room temp on startup for both bed and extruder.

* One at a time, try manually setting the bed and extruder temperatures (M104 S215 / M140 S80 straight into the console), and then watching the temperature plot. Look for sharp changes / discontinuities, or the error message. If you don't get the error and the temperature seems to hold, try carefully wobbling the cable to the heated bed thermistor (don't burn yourself!!) - often the movement at the start of the print is part of the cause of the fault. In any case, let us know what you discover and I'm sure someone will be able to work with you from there.

If you need to repair the thermistors, there's a bit of info on here about it (usually it's a connection, not the actual thermistor itself).

SD3. Mk2b + glass, heated enclosure, GT2 belts, direct drive y shaft, linear bearings, bowden-feed E3D v5 w/ 0.9° stepper
Smoothieboard via Octoprint on RPi

3 Reply by Professor Membrane

  • Professor Membrane
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Re: Solidoodle 2 print won't start

Thanks for the reply! I'm currently looking at the proterface temp graph, it says my temps hover around 12 and 13http://soliforum.com/i/?1LmROoI.png

It's currently about 45 degrees F in my garage.

I'm testing the extruder temp rise, and getting a smooth rise in temp with no spikes, same thing with the bed when done separately.

Tried wobbling upon start when temps are where they are set, but the machine still just sits there.

UPDATE:

I used the slicer stand alone to create the gcode rather than using the one in repetier host and loaded it into pronterface. I'm now running into the same problem as before. I start the print, and it sits there after adjusting the bed for about a minute or two. The extruder temp drops all the way down to 190F then the print begins, I have to pause it so the extruder doesn't jam due to low melting temp, but the temp will rise back up to around 215F as soon as it gets down to 190F. It seems the print will keep going, but it's not working how it used to... I used to slice, and hit the print button, and it would start without a hiccup, temps would stay and I didn't have to bust a blood vessel every time I wanted to print something...

4 Reply by grob

  • grob
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Re: Solidoodle 2 print won't start

Ok, note the temperatures are in celcius, not farenheit. 12-13C doesn't sound too far off for your room temp (45F ~ 7C).

As the temperature is reducing before movement starts, it sounds nearly like a set-and-wait command has slipped in there.

Maybe:
* Start g-code in slicer is doing something weird - check this out, if not sure whether it's OK feel free to post it here
* Wrong filament profile selected in slicer (190C is suspiciously like a PLA setting)
* Power supply can't handle both bed and extruder at the same time - try heating them up simultaneously manually, make sure they're still happy.

SD3. Mk2b + glass, heated enclosure, GT2 belts, direct drive y shaft, linear bearings, bowden-feed E3D v5 w/ 0.9° stepper
Smoothieboard via Octoprint on RPi

5 Reply by Professor Membrane

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Re: Solidoodle 2 print won't start

The temp keeps starting out high, and then goes all the way down to 192C then gradually raises up again, then stays where it needs to be. I don't get it... This power supply has worked great for quite some time... here are my gcode start codes.

G21;
G28 ; home all axes
G91;

6 Reply by grob

  • grob
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Re: Solidoodle 2 print won't start

Run a PID autotune - might be an issue with this (something wacky with the I term maybe):

http://reprap.org/wiki/PID_Tuning

(1) Start with a cold extruder
(2) Run M301 S230 (where '230' can be replaced with the temperature you normally extrude at)
(3) The printer heats up, overshoots, cycles a bit - keep an eye on it, only takes a short time
(4) Three values are printed out in the terminal: Kp, Ki and Kd
(5) Apply these three values with M303 P1 I2 D3, using the values from above instead of 1,2,3
(6) Save the values to EEPROM with M500

SD3. Mk2b + glass, heated enclosure, GT2 belts, direct drive y shaft, linear bearings, bowden-feed E3D v5 w/ 0.9° stepper
Smoothieboard via Octoprint on RPi