Ok, first off I want to thank this community for always being willing to help out.

I think probing that one point twice that @BoA pointed out was the issue. I updated my bed.g file and all seems good now.

When I try to set my hot end temp to 235C the DSW reports it at around 245C. I am not sure what to check or what to do. I have done an AutoTunePID for the hotend but that did not fix the issue. Any thoughts would be appreciated.

Thanks! That helps and is what I was mostly thinking

Hello,

I am new to Duet and Reprap and trying to leverage the Manual Bed Leveling Assistant to help level my bed. When I get presented the output of the assistant it will be similar to the following:

Manual corrections required: 0.00 turn up (0.00mm) 0.34 turn down (0.17mm) 0.31 turn down (0.16mm) 0.46 turn down (0.23mm)

I am curious to verify when the assistant states I should "turn up" a knob does that mean get the bed closer to the nozzle or further away?

Thanks

@bearer I will definitely look into that, thanks

Is the consensus then that this bed is safe with how I have it set up?

I run a Mosfet between the Duet 2 Ethernet and the bed, I will be upgrading the 14 gauge wire to 10 gauge as recommended in a previous post.

I just got word from Zyltech that they updated the specs based on my experience...I guess I am also confused how the dual power works, most dual power beds I have seen you need to solder differently to change the input voltage.

http://www.zyltech.com/zyltech-3mm-aluminum-heated-heat-bed-3-sizes-available/

300 x 300mm MK2A Heated Bed

Outside dimension: 330x330 mm
Usable size: 300x300mm
Resistance: 1.05-1.3 ohm for 12V
Resistance: 1.5-2.2 ohm for 24V
Voltage: 12-24 V (recommend 24V for better performance)
Pre-wired with thermistor and power cable

@dc42 said in MK2A Heated Bed causes board to crash:

about within the rating of the Duet. The hot end po

Thanks for all of this discussion folks.

If I read the comments after I posted the link to the bed and specs, can I assume you all feel this board can be used safely at 24V?

I do run an external Mosfet and I will get 10 gauge wire to help with safety from the Mosfet to the bed.

I am in a email conversation with the seller and am trying to determine if I should ask to return this board and look for something else. I do not want to introduce AC power as I am not yet comfortable with that concept, it feels more nuanced from a safety lense.

Thanks
Brett

@Phaedrux said in MK2A Heated Bed causes board to crash:

Do you have a link to the item you've purchased?

Here is a link to what I purchased:
http://www.zyltech.com/zyltech-3mm-aluminum-heated-heat-bed-3-sizes-available/

If you look at the description I purchased the one labeled as 300 x 300 MK2A Heated Bed.
300 x 300mm MK2A Heated Bed

Outside dimension: 330x330 mm
Usable size: 300x300mm
Resistance: 1.05-1.3 ohm
Voltage: 12-24 V (recommend 24V for better performance)
Pre-wired with thermistor and power cable

@Phaedrux said in MK2A Heated Bed causes board to crash:

Does your board have 2 solder pads or 3? The photo is a bit blurry.

@bdelia said in MK2A Heated Bed causes board to crash:

If the above is accurate then it seems the bed is on the fringe of 24V compatible? Does that sound correct?

No. 1.4ohms would still indicate 12v. I think you're hoping pretty hard that this is just going to somehow work. I think your seller is clueless and is leading you astray. There's no way I would connect 24v power to that heat bed and leave it unattended in my own house.

Thanks for your thoughts. I have sent an email to my supplier for the bed and am waiting for a response. Worst case I am out about $50 for the bed and will have to source another one.

Does anyone here have a recommendation for a 24V 300x300 heated bed? I would prefer to source in the USA if possible for shipping timeliness.

Thanks
Brett

@Phaedrux said in Manual Bed Leveling Assistant huge values returned:

@bdelia said in Manual Bed Leveling Assistant huge values returned:

;M561 ; clear any bed transform

You may want to uncomment this, because you would want any mesh compensation or other bed surface alterations to be canceled when doing the leveling.

Thanks for the tip