Topics created by Peter_O

Hi @dc42 ,
thanks for the explanaitions and your time!

So, if I would insist in bringing that EMI away, I should probably use a 4 wire fan.
Otherwise it's just the way 2 wire fans are kind of running by PWM and I should come to terms with it.

BTW: I never had any doubt, that the duet boards are carefully optimized designs. It's just abount gaining some small understanding on my side.

Thx again! 🙂

Ok. Maybe I'll swap the encoder for a quality part sometime. Thanks!

@peter_o said in Fan Port 0 damaged. Any chance to repair?:

@dc42

That was fast! Perfect! Thanks a lot!
I might not be the first one ... 🙂

You are certainly not the first one! Damaged fan mosfets cause by fan shorts are the most common way for users to damage a Duet. The 1A fuse we added in later revisions protects the PCB from damage, but the fuse isn't quick enough to protect the mosfets.

@deckingman: ... so it's nice to know that sharing my experiences has been helpful to someone.

Oh, it is ideed. Be sure of that!
From our small local Blog (www.drucktipps3d.de) we know that most of the people are silent readers.

BTW: Here's a first traffic cone (https://www.thingiverse.com/thing:21773) with 100/0 - 0/100 mixing extrusion. Far from perfect, but it's a point to start from.

alt text

Ah, thanks a lot again, @dc42, @Phaedrux

Meanwhile my printer is running the first prints with the Duet and I'm quite impressed with the print results.

Thanks for providing this great solution!

@rcarlyle , @dc42

Thanks a lot to both of you fort your thorough answers.

(I feel, I owe you the complete story: At the moment my printer is running on smoothie and I'm thinking about changing to duet, provided that the duet solution is flexible enough to help me along. Your replies convinced me, that it is the right step to do, because of the solution and this forum support.)

@rcarlyle
1
I came from an E3D V6 and with 30°C room temperature I got heatcreap caused extrusion problems. That made me try the water cooling, taking my existing E3D V6 heatblock etc.
Compared to the air cooled results the water cooled results were not that good: much more Z banding etc.
Because the inner temperature of the air cooled solution runs 10 to 20° warmer within the cold end, I thought: maybe it's not a good idea to pump that much heat away from the hotend and better run the cold end 10 to 20° warmer.

2
Excellent advice. I will a least put in another mosfet to make the onboard one save.

3+4
and
@dc42
Understood. PIDing the pump is not the solution. I have the pump at an laboratory power supply at the moment and will do some more temperature measurements and test prints. Based on that I wil decide wether to control pump and/or heater bang bang or proportional (@dc42 I did not even know that this option exists).

Meanwhile I'll order the board.
Thanks a lot again, guys!