Heated Bed won't shut off Rostock V3

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buellrider77
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Heated Bed won't shut off Rostock V3

Post by buellrider77 »

I've been struggling with warping on the base layers on my PLA prints. I've tried to print to blue painter's tape with the heated bed off. However, when I run the print the bed heats up regardless.

In MatterControl I'm setting the heated bed temp to 0C, exporting to an SD Card. When I load the print, the LCD on the target temp says 0. But the bed heats up to the 80C range (of note, the bed heats faster than when I heat the bed as part of print where I'm using a heated bed).

Thoughts?

Thank you

Xenocrates
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Re: Heated Bed won't shut off Rostock V3

Post by Xenocrates »

It's quite bizarre. Does it start heating as soon as the printer does? Or does it have to be starting a print for it to do this? Perhaps it's a MOSFET going, or it may be the PID drive Min.
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buellrider77
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Re: Heated Bed won't shut off Rostock V3

Post by buellrider77 »

The bed heats up as soon as the hot end reaches temperature and drops to the bed to print.

buellrider77
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Re: Heated Bed won't shut off Rostock V3

Post by buellrider77 »

I'm running FW Version: 0.92.2 with an HE280 hot end and an Onyx heating bed. The version of MatterControl 1.6.3.8003

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DeltaCon
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Re: Heated Bed won't shut off Rostock V3

Post by DeltaCon »

I am not too familiar with MC, but could there be an option somewhere to use firmware temp instead of the temp set in the material parameters? Check if that 80C is a firmware preset.
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AlanKilian
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Re: Heated Bed won't shut off Rostock V3

Post by AlanKilian »

Could you post the first hundred lines or so of your G code?

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timskloss
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Re: Heated Bed won't shut off Rostock V3

Post by timskloss »

buellrider77 wrote:The bed heats up as soon as the hot end reaches temperature and drops to the bed to print.


Check the MatterControl settings under Printer->Custom G-code->Start G-code. You may have the default code in there which sets a fixed temperature for the bed and or extruder. I suggest the following:

Start G-code
M104 S[temperature]
M190 S[bed_temperature]
M109 S[temperature]
G28

End G-code
G91
G1 Z10 E-5.0 F12000
G90
G28
M104 S0 ;turn off hotend
M140 S0 ;turn off bed
M84 ; disable motors
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