NebuCHADnezzar
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
thats what you would think, right? but I am not so sure if that is really correct... When a fan pulls air, it creates negative pressure, which can lead to turbulence and increased resistance in the airflow path. This can reduce the overall efficiency of the fan... Some fans are definitly specifically designed to push air and may not perform as well when used to pull air. The design of the blades and the housing can significantly impact the fan’s efficiency in different configurations...
The air flow behind a fan is slow moving and wide whereas the air flow in front of the fan is fast moving and narrow
1728 replies
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
oh okay, thats what I more or less thought that you would do, but it sounded for me in Helges message that you are just reverse the spinning direction, so I was unsure if you are actually flipping it at the moment or if you are reversing the spinning direction... but now I also understand what helge was saying better, because indeed the blades are not optimized for pulling air, even if the spinning direction is as intended... the question is do fans exist that would be optimized to sucking in this formfactor?
1728 replies
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
I am just a noob reading along this thread, but what about actually reversing the fan? I mean flip it around and use it in unreversed... would that not improve the characteristics, because the blades would be working in the direction they were intended to?
also just an idea (I am not sure if this would be even possible without a major redesign), but what about putting the fan behind the hotend instead of front and then blow the air over the hotend as usual, just 180° flipped?
1728 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
unless the wiring shown in the picture above is doing any of that I did not do that, yes hahah (I didnt change anything yet, so I can maybe still find whats wrong)
I even did use compressed air to remove any dust, to be sure there is nothing that could short...
and the whole machine didnt see power until friday... the board and pi was only powered once on my desk to flash it and everything worked fine back there...
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
I just wanna know what happened
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
I dont care about the 65 bucks honestly
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
if it was me I wanna know what I did wrong
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
LMAO
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
hmm maybe thats what happened then idk...
I am just a person, that would rather start to question my whole existence than question a board manufacturer
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
is that a thing?
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
but then why would it have been good to flash? when it only got power via the Pi (with the jumper set for that)
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
I soldered my first electronics at age of 13
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
and I have handled stuff like that for over 15yrs
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
in my understanding I did nothing that could fry a board like that...
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
ye maybe it was me but I dont understand why
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
components would be fried before any fuse blows and stuff like that
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
they have issue with boards dieing for no reason and also fail safe not working at all
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
but then I wire everything up and bam its dead
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
and RatOS recognized it
75 replies
RRCRat Rig Community [Unofficial]
•Created by NebuCHADnezzar on 8/30/2024 in #fix-my-printer
No Voltage on Octopus V1.1 J26 pins?
I had flashed it successfully
75 replies