ReFl3x0r
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Posts posted by ReFl3x0r
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Hello.
At first thank you so much for this, after everything works out as expected I'll be definitely considering a donation.
After a small flash while attaching everything I had to wait for a replacement of the motherboard (of course missing E2-slot). Now everything is working fine besides the fans on the second hot end. (Using mark2 expansion board).
If I manually set the fan speed to 100% they are spinning but not as fast they should. The hot end fan does not kick in regardless what I'm doing (heating up over 40°C is necessary I guess).
I measured the voltage at the hot end fan port and when it should be off, there are 4.9v without load or 2.8v with a fan attached.
As soon as it's used to power up the fan, the voltage drops down to 0v.
I've changed the Ulticontroller, tried different 5v fans but keep facing the same behavior. I ordered a new mark2 expansion board and hope that this one's just faulty but I wanted to ask if I missed some settings needed with using this board, I thought connecting the ext-cable should be enough to control the fans in a proper way. I followed the guide on magnetic-tool-changer.com and I am using Tinker-Mark2-expansion-board-17.09.hex as firmware.
Thanks in advance for your help and once more for this awesome upgrade!
Ultimaker Mark2 - The Smart Dual-Extrusion Upgrade
in Third party products & modifications
Posted
Ok, i solved the problem by replacing the transistors, now everything is working as expected
One thing I noticed, if I cancel a job, the main extruder drives nuts in every action following like it totally lost orientation, trying to bypass boundaries.
Anyone else noticed this? Maybe related to firmware?