January 9, 2019 at 3:17 pm #82997
So I need to add these to the Configuration.h file and flash the firmware to the RamBo now I guess.
The U1 should have set them, and M500 will save them to EEPROM. Putting them in Configuration.h is just to make sure next time you flash it, you will have those settings.January 9, 2019 at 4:07 pm #83015
Awfully nice looking little cube there. 🙂
1 user thanked author for this post.January 11, 2019 at 6:39 pm #83439January 16, 2019 at 12:55 pm #84082January 16, 2019 at 1:12 pm #84089
I think my next printer is going to have to be BIG. like Real Big.January 16, 2019 at 1:14 pm #84090
I think my next printer is going to have to be BIG. like Real Big.
Like how big? Zltech has a 20 pack of 500mm black aluminum extrusion for $69.95. I was going to do 300×300 but maybe I should scale it up a bit.January 16, 2019 at 1:15 pm #84091
I’m not sure at what point I need to go to larger extrusion..January 16, 2019 at 1:31 pm #84092
I’m not ready to get another printer yet. I just know the next one is going to be BIG. Big enough to seem TOO BIG.
I have a handful of nozzles of different sizes that I’m going to experiment with soon, and I’m wondering if my hotend can keep up. I think the biggest one is 1.0mm. I don’t print fast, so maybe it will?
I’ve been printing these and they seem to take FOREVER:
https://www.thingiverse.com/thing:608012January 17, 2019 at 1:48 pm #84253
So a couple of times in a row I have gotten the Thermal Runaway for the bed warning. I have a feeling it might be the fan blowing on the bed possibly? After a few reboots I was able to print a piece in the lower left corner.
Okay, I changed my mind. I’m going to go for the big one. 400 x 400 x 500. It might take me a few years to build but who’s counting…January 17, 2019 at 1:56 pm #84254
What was the bed temp you were trying to maintain? You did not enable the bed PID did you?January 17, 2019 at 2:03 pm #84255
I think I have the bed set for 70.
Are any of these for the bed? I added them to configuration.h file.
#define DEFAULT_Kp 15.64
#define DEFAULT_Ki 1.01
#define DEFAULT_Kd 60.56January 17, 2019 at 2:08 pm #84256
You should NOT have the PID enabled for the bed (hotend yes, not bed). My default firmware does not have in enabled.January 17, 2019 at 2:15 pm #84257
Those are for the hotend not the bed.
How are you running it? If you’re running octoprint, the graph is pretty helpful. Pronterface also has a graph, but it’s not as pretty. If it’s having a hard time maintaining the bed temp, then the graph would show that well.
Thermal runaway is because it’s not staying at the desired temp.
It might not be a false alarm. Is the thermisor well secured to the bed?
What would cause the bed to not heat enough? Ryan’s right that PID on the bed would do it. Maybe a bad power supply or a bad solder.January 17, 2019 at 2:16 pm #84258January 17, 2019 at 2:30 pm #84262
I just remember the PID tuning question, couldn’t remember if both were done or not.
Power supply Amps? Secure wire connections to the bed and board and yes secure thermistor. I agree with Heffe, repetier has a temp graph as well.January 17, 2019 at 7:14 pm #84302January 17, 2019 at 7:32 pm #84305
Where it is on the bed should have no effect on heating unless you have a loose connection or something.January 18, 2019 at 9:00 am #84362January 18, 2019 at 9:20 am #84367
That isn’t cool. So from what I understand there are only two things that can cause that, bed is messed up (pulling too much power), or perhaps you had a loose connection there (you did not tin the wires did you?).January 18, 2019 at 9:34 am #84368
That isn’t cool. So from what I understand there are only two things that can cause that, bed is messed up (pulling too much power), or perhaps you had a loose connection there (you did not tin the wires did you?).
This morning I tried printing in the middle again and ended up with the halt error. I started a print in the corner again and I could see a red light showing the bed was heating. I decided to move the bed back and forth. That is where the red light went out pushing it all the way back.
This turned out to be a loose connection. I need to secure the bed wiring to the Rambo so it’s not pulling the wiring from the connector when it moves back and forth.
“USER ERROR”January 18, 2019 at 9:56 am #84372
Yikes. If you dont mind, can you take some wider shots of that? It sounds like the bed wire is too short and it was pulling the plug 1/2way out, which caused arcing? Is that right?January 18, 2019 at 11:16 am #84388
Yikes. If you dont mind, can you take some wider shots of that? It sounds like the bed wire is too short and it was pulling the plug 1/2way out, which caused arcing? Is that right?
I just want to point out that this is user error if someone comes along and reads this thread.
Yes, it was pulling on the heated bed cables and worked itself out of the connector. Since this moves around a lot I need to secure it with a cable tie to the Mini Rambo.
I left it at the office I think. I can take a picture when I go back.January 18, 2019 at 11:33 am #84395
I have mine cable tied to the bed carrier, and the screw that holds the board to the frame. No connections move just the large loop of wire, that is strategically looped.January 18, 2019 at 11:38 am #84398
It sounds like it got loose at the mr, so the connector was arcing.January 18, 2019 at 11:38 am #84399
I have it tied to the board already. I will cable tie it to the screw / spacer behind the Rambo board like you mentioned so it wont move around.January 18, 2019 at 11:39 am #84400
It sounds like it got loose at the mr, so the connector was arcing.
I put my finger down under the plug and it was hot to touch. That is when I saw the wiring was pulled out slightly.January 18, 2019 at 12:49 pm #84406January 18, 2019 at 1:48 pm #84416
In the early days of import ramps, this sort of thing was the biggest issue except they had cruddy connectors so it would melt both sides and get real nasty.January 18, 2019 at 3:02 pm #84428
Yeah, I have a really scorched green connector around here somewhere still.January 23, 2019 at 6:46 pm #85221
How can I change the Y home to be the back left corner instead of the front left corner?
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