3D printer help


FalseShepherd

Member
If you're still having trouble with stuff sticking to the bed a good thing to do before the start of a new print it to wipe down the bed with Isopropyl Alcohol (also called IPA). This gets rid of any oil from your hands and anything else that might be stuck to the build plate. I also check my bed level after every couple of prints, I'll get a BLTouch eventually haha.

I had a very similar noise coming from my hot end fan a few weeks ago and after carefully pulling the fan blade off the motor I found it was covered in dust and very thin strands of filament were wrapped around the shaft. I'd still order some spare fans just to be on the safe side, I had a fan die mid print (rip) and had to wait 2 weeks for it to come in so its handy having spares lying around.

View attachment 303224

As for the Filament sensor this STL might be a good one,


I haven't used on of these myself but I imagine there should be a spot on the Ender 3 motherboard that you can plug the sensor into. Is your Ender 3 running the stock motherboard?

Hope that helps out mate!
Thanks for the mount. I don't know why I could never find one myself. And yes I have a ender 3 pro and am using the stock board. I also thought that there was a place to plug it but I can't find any information about where that plug is...
 

Thetas

New Member
Thanks for the mount. I don't know why I could never find one myself. And yes I have a ender 3 pro and am using the stock board. I also thought that there was a place to plug it but I can't find any information about where that plug is...
No problem mate, I don't know if it's just me but sometimes I have to be very specific with what I search for on Thingiverse, not exactly the best search system.

I've got an old stock Ender 3 Pro board here, I'll give it a look over and see if i can find anything out. Do you have a photo of the plug on the end of the sensor?

Edit: So I can't find a way to plug in anything extra into a stock Ender 3 board but I did find this beaut little adaptor board by TH3D. Looks like you plug it into where the LCD screen cable sits and then plug the LCD screen cable and filament sensor into their respective ports. Link to the board: Ender 3, Ender 3 V2, and Ender 5 Filament Sensor Kit for V1.1.x & V4.2.X Boards - TH3D Studio LLC

sensor board.jpg
 
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FalseShepherd

Member
No problem mate, I don't know if it's just me but sometimes I have to be very specific with what I search for on Thingiverse, not exactly the best search system.

I've got an old stock Ender 3 Pro board here, I'll give it a look over and see if i can find anything out. Do you have a photo of the plug on the end of the sensor?
The plug looks like this. Presumably so you can arrange the wires however u need.

PXL_20210224_204256705.jpg

I appreciate anything you can find out but just fyi, my board is probably different. I read somewhere that the new 3 pros have a new board. I can attach a pic of that tho.

PXL_20210115_022611333.jpg

I believe that pic is pre BLtouch installation but it's basically the same.
 

Thetas

New Member
The plug looks like this. Presumably so you can arrange the wires however u need.

View attachment 303292

I appreciate anything you can find out but just fyi, my board is probably different. I read somewhere that the new 3 pros have a new board. I can attach a pic of that tho.

View attachment 303263

I believe that pic is pre BLtouch installation but it's basically the same.
Okay so the first board won't work because of the dupont connectors in the first photo, this board is the same idea but use pins that the dupont connectors to plug into instead of a jst connector. Sorry to if its annoying to open the board housing again but where is the BLTouch plugged into?

 

FalseShepherd

Member
Okay so the first board won't work because of the dupont connectors in the first photo, this board is the same idea but use pins that the dupont connectors to plug into instead of a jst connector. Sorry to if its annoying to open the board housing again but where is the BLTouch plugged into?

The BLtouch is plugged into a slot that is kinda hidden under the lcd cable as circled in purple in this picture. I can take an actual new pic if I need to just lazy.

PXL_20210115_022611333~2.jpg
 

Thetas

New Member
The BLtouch is plugged into a slot that is kinda hidden under the lcd cable as circled in purple in this picture. I can take an actual new pic if I need to just lazy.

View attachment 303356
Thats all good, I found this wiring diagram of the new mainboard in the Ender 3 Pro which shows that there is a dedicated port for a filament sensor. Just need to be sure which wire is which on your sensor since they are different colors to whats in the diagram. From what I've read online Creality (in their infinite wisdom) changed two of the pins around and didn't bother to tell people so make sure the right colored wire goes onto the right pin, otherwise the Magic Smoke will escape.

If you're having trouble finding out which wire is which for your sensor, could you post the link to where you bought it? I might be able to find something out.

4.2.X board.jpeg
 

FalseShepherd

Member
Thats all good, I found this wiring diagram of the new mainboard in the Ender 3 Pro which shows that there is a dedicated port for a filament sensor. Just need to be sure which wire is which on your sensor since they are different colors to whats in the diagram. From what I've read online Creality (in their infinite wisdom) changed two of the pins around and didn't bother to tell people so make sure the right colored wire goes onto the right pin, otherwise the Magic Smoke will escape.

If you're having trouble finding out which wire is which for your sensor, could you post the link to where you bought it? I might be able to find something out.

View attachment 303369
Awesome. That's what I was looking for and could not seem to find. According to the source red is 5V, black is ground and blue is signal. I will try it out probably Monday.
 

Thetas

New Member
Awesome. That's what I was looking for and could not seem to find. According to the source red is 5V, black is ground and blue is signal. I will try it out probably Monday.
Cool bananas, hopefully it all works out. I was reading someone else post about the swapped pins on the board and they said that if you take the board and flip it over it, there should be writing next to the each of those pins that say which in is signal, 5V and ground. Would really hate for you to get your printing working great and then the magic smokes escapes.
 

FalseShepherd

Member
Cool bananas, hopefully it all works out. I was reading someone else post about the swapped pins on the board and they said that if you take the board and flip it over it, there should be writing next to the each of those pins that say which in is signal, 5V and ground. Would really hate for you to get your printing working great and then the magic smokes escapes.
Hmm.. yeah I don't really feel like flipping the board over but it might be worth it. I actually just finished a spool of filament so I'm a whole Kg away from potentially running out again so no real rush at this time. But thanks for the tips! If I can get this stuff finalized I can stop upgrading and focus on making props!
 

Thetas

New Member
Hmm.. yeah I don't really feel like flipping the board over but it might be worth it. I actually just finished a spool of filament so I'm a whole Kg away from potentially running out again so no real rush at this time. But thanks for the tips! If I can get this stuff finalized I can stop upgrading and focus on making props!
Thats understandable, I hate having to take the whole printer apart just to check one little thing but I know that the time I don't do it is when something bad like the magic smoke escaping or something. It's an annoying process to get a printer up and running perfectly but its so worth it in the end.
 

FalseShepherd

Member
Printer update I suppose,

I finally got a new fan for the hot-end and installed it. The original obnoxious noise is now taken care of. While installing the new fan, I took a moment to look at the wiring labeling on the back of my board. I also know now how to install the new runout sensor. Havent done it yet, but I was going to print the mount first...

Now on to the new problem. I have run out of PLA and only have ABS. I have an enclosure which I like pretty well, but my hot-end will not heat up past 205. As it tries to get 206 degrees it stops and gives me a "E1 Heating failed, printer halted, please reset".

All I can find online talks about the thermistor being not seated properly. I have checked as best I can on the thermistor and it looks normal to me. More to the point I haven't messed with it so it shouldn't be messed up.

Anyone have any thoughts about fixing this that doesn't involve editing the marlin code, or replacing the thermistor? I really dont feel like buying a new thermistor or learning about Marlin.
 

Thetas

New Member
That's a thinker, maybe when you were looking at the board a plug came loose a little bit? That happened once when my extruder motor stopped working properly, I had been looking at the board and the extruder motor plug had come loose. I'd check that everything is plugged in all the way.

I find that when I've got a problem with 3D printing I think about what the last thing I looked at/changed/tightened/adjusted etc and work backwards from there.
 

FalseShepherd

Member
That's a thinker, maybe when you were looking at the board a plug came loose a little bit? That happened once when my extruder motor stopped working properly, I had been looking at the board and the extruder motor plug had come loose. I'd check that everything is plugged in all the way.

I find that when I've got a problem with 3D printing I think about what the last thing I looked at/changed/tightened/adjusted etc and work backwards from there.
Sigh. Ok. Time to do some poking i guess...

Thanks for trying!
 
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