[florent]

Speaking of plastic tube, I bought a random plastic tube, not finding the PTFE tube. Is that a problem ? PTFE is -heat proof or something like that ?

[florent]

Thanks for reposting the video, Hoff70 🙂

Yes, good progress indeed ! I’m on it full time these days !

I think I found what the tightening cone are for : aren’t they usedwith the help of the cap to “block” the plastic tube in which the filament goes ?

[florent]

Yes, yes, yes and yes I am. Is it a bad idea ?

I’m happy, my filed-extruder-screw seems to be working. We’ll see for the accuracy later on.

[florent]

On the first picture you can see my “nice” soldering of the 10kohms resistors on the drv8825 md20a. Turned out it wasn’t that difficult. The smoothing hack is gonna be harder, though.
The second picture is the opto-endstops I bought. Are three of them enough ? I count two for X/Y axis, but for we need two others for the Z axis, right ? Maybe by putting it in the middle of the course with two triggering piece I can only need one…

[florent]

Here are some photos ! And a video of me testing the motors.

[florent]

Okay thanks a lot ! I’ll try to install it. Right now I’m trying to make my screw for the extruder with a metal file, cause I don’t have a tap… I’ll tell you how it goes. I’ll try to put the pictures, too.

[florent]

Silly me ! I had inverted two wires in the motors wiring ! It works just fine now. I can’t wait the for the first print, even if it’s not for tomorrow, I guess. Btw, how can I upload some photos on this forum ? Do I have to put them online ? How ?

Another question : to do the calibration, what software do I need ? I downloaded the ultimaker software (named Cura on my Ubuntu) but I can’t find the windows where you can “control your reprap by puhsing buttons or something like that”. Is Cura just for printing or for configuration also ??

Thanks again for all the answers Quentin ! That really helps a lot !

[florent]

It’s still not perfect, though. It should turn 5 sec in one direction and 5 in the other, but it sometimes fails, turn less than the good time in one direction and go back in the other. Some king of step skipping, I guess…

[florent]

Yes I soldered a 10k resistor between those two. But do I need then not to connect fault with the board ?

It doesn’t seem to be heating or to be giving any current to the motor… I am SCARED.

Maybe my soldering is not good enough….

INCREDIBLE !

As I was writing I accidentally I touched the board , and then it started working ! I should have a problem in the connection to the power supply, bad contact or smthg like that. It’s a relief to see that the 10euros chip is not dead 🙂

[florent]

Hi ! Thanks again !

I tried to test one motor with this file

http://reprap.org/wiki/File:RAMPSTestCode.pde

that they recommend to test the ramps1.4 :

http://reprap.org/wiki/RAMPS_1.4#Pre-Flight_Check

Still, my motors isn’t working. I tried turning the pot to a higher value, still nothing.As I only have one motor connected to my ramps, I was wondering if the endstops should be connected, if maybe the board prevents any movement of the motors if the endstops are not connected. Is it ?

[florent]

Hi ! Thanks for the answer, I’ll try soldering this afternoon. Quick questions :

– What software do I need to test my motors ? For example I connect one motor to my RAMPS, connect al this to the power supply and to the computer, but then how can I try to move the motor from the PC ?

– Do we need one or two nut to go on the Alpen leadscrew ? I got only one maybe I lost the other… If that is the case I’ll start my reprap with a theaded rod, to see if this work.

Thaks !!

Bye
Florent

[florent]

Hello Quentin,
I have a RAMPS 1.4, does it add/remove problems ? 🙂

Regarding the modification you recommend (the smoothing one https://www.morgan3dp.com/?p=321 ), is there any way that it can be done not by soldering directly on the pin of the chip ? It’s so tiny ! Anyway I’ll try if I can’t get it work properly.

Second question, a couple of days ago I found on a website the second modification I may have to do ( soldering a resistor between two pin). This one seems doable for me, but I can’t anymore find the webpage that explained it ! HAve an idea ?

Thanks for all !

Florent

PS: My Morgan is going well, I think the mechanical parts are almost done, though it is not first class assembling :s… We’ll see !

[florent]

(BTW, JP, if you need help for the translation into french, I can help)

[florent]

Hi there ! I’d like to upload here a picture of my Reprap Morgan in building, but I don’t know how to do it. If somebody knows…

Anyway I got another question, because the mechanical part of the reprap is soon to be finished. Here it is : I bought the stepper driver DRV8825 md20a, and the nema motors 0.9, but I fear a lot that my soldering skills aren’t good enough to allow me do the hack on the stepper driver. ( soldering some pin to avoid a problem).
The thing is, what if I don’t do the soldering for the moment ? Can I still try to use my reprap, even with less good quality of printing ? As I understand it, I can use the motors, but it would be just like having bought 1.8 motors instead of 0.9.

Is that right ?

[florent]

I’m the french maker JP is printing parts for !

Can’t wait for those to be printed ! Will try to upload some pics during the construction.

++

Florent

[Author]

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