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If you can get a 12V heater cartridge that fits your hotend, that would of course be ideal.
But as long as you are happy with your peek based hotend, I would not throw it away just because of a broken resistor. Just make sure to get a resistor which is "wire wound" and rated for 3W. If it has a lower resistane (e.q. 5.6R or 4.7R) this is no problem as you can always adjust the maximum duty cyl
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enif
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RAMPS Electronics
I am not an expert, but I assume that the amount and type noise you hear when the motor is not moving depends on the current and the exact position in which the coils have to keep the axis balanced in between the full-step positions. But even when there is no noise, as long as the stepper motor is enabled, there will always flow current at least in one coil.
The stepper motors need the current w
by
enif
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Stepper Motors, Servo Motors, DC Motors
Have you made sure that the top metal parts of the MOSFETs D8 and D9 are not touching each other by any chance?
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enif
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RAMPS Electronics
What you measured seems normal to me: depending on the position, one coils gets more and the other less current (at full step positions one coil has all the current and the other none). But it's not a good idea to measure the current through the coils, its not very meaningful and if you somehow loose the connection you can easily damage the driver.
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enif
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Stepper Motors, Servo Motors, DC Motors
Is the problem the same on all the axes? Is the distance the axis travels about right in the direction of the longer move?
I'd check the speed and acceleration values to make sure that they are not too high for your motors (this is especially critical for the z-axis, where the default values are often too high). Note that these values also depend on having the correct setting for steps/mm. An
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enif
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RAMPS Electronics
It seems rather strange that the motors of your Z-axis should be too weak, as these are usually the ones needing the least power to fulfill their task. Does your printer have some particular construction which requires so much strength on the Z-axis?
When the Z-motors are giving problems, it is usually not a problem of motor strength, but more often it is due to the too high default settings fo
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enif
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RAMPS Electronics
QuoteBrotherbrown831
Is there a "MAX HOT END PWM" setting?
It's probably PID_MAX which you are looking for.
If the setting is the same for both printers, the problem is likely due to your two heating cartridges having different resistances and thus deliver different wattage to the hotend...
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enif
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Firmware - Marlin
The ceramic base of the trimpot on the stepper drivers can break easily, which can lead to that kind of weird behavior.
I had several drivers that arrived broken in the mail due to bad packaging.
So you might want to check out the trimmer with a magnifier glass for any cracks.
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enif
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RAMPS Electronics
QuoteDurandile
Et pour demander 10cm via Repetier, quel bouton faut-il utiliser?
Desole, mais je n'utilise pas Repetier, seulement Pronterface. Mais dans la documentation de Repetier tu devrais trouver quelque part la longueur extraite avec ces fleches. Note que les 10cm etaient juste a titre d'exemple, tu peux extraire n'importe quelle longueur, tant que tu connais sa valeur (et quelle ne soit
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enif
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RepRap Groupe d'Utilisateurs Francophone
C'est simple, tu commences en mesurant au pif le rayon R de ton pignon, et, en assumant que tu as un moteur a 200 pas (1.8deg) avec 1/16 microstepping, tu calcule le steps/mm comme
(nombre de micropas par rotation entiere)/(circonference du pignon) = (200*16)/(6.2832*R)
Ceci te donne une bonne valeur de depart. Ensuite tu mets le filament, tu mets une marque a une distance precise de l'entree
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enif
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RepRap Groupe d'Utilisateurs Francophone
Have you checked if the leads to the thermistor could in some way cause a short among them or towards the hotend block? This could happen at a certain height or at some extreme movement of the carriage, so it would not be surprising if it happened always at the same place of the print...
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enif
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RAMPS Electronics
So it looks like your RAMPS has the same problem as described in this thread.
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enif
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RAMPS Electronics
How far have you lowered acceleration and speed? I remember that the defaults for acceleration used to be way to high. So you should try to start with really small values...
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enif
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RAMPS Electronics
Have you tried to lower the max. acceleration and the speed?
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enif
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RAMPS Electronics
Quotejbernardis
However having said that, I should also state that there is nothing wrong with recursive code.
I fully agree.
Quotejbernardis
I think it would be perfectly valid for it to error out if recursion reaches a depth of, say 10 or 20.
But here I disagree. I also use recursion quite often, and sometimes the recursion depth can go quite deeper than that. Given OpenScad's "specialty" t
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enif
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OpenSCAD
Gemäss dem RAMPS pinout sind das effektiv 5V und GND vom AUX-4, die da kurzgeschlossen waren.
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enif
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Elektrik & Elektronik
Ich gehe mal davon aus, dass das Problem mit der "leeren" RAMPS Platine auftritt, d.h. ohne irgend welche externe Verbindungen. Falsch eingesteckte mechanische Endstops verursachen nämlich auch einen 5V Kurzschluss...
Wenn du ein Multimeter hast, dann prüfe mal, ob es auf dem RAMPS einen Kurzschluss zwischen VCC(5V) und GND anzeigt? Wenn ja, dann kannst du mit dem Multimeter weitertesten - a
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enif
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Elektrik & Elektronik
Le MAX_BED_POWER controle le PWM du lit, donc le pourcentage du temps (255->100%) que le lit chauffant est allume, ca n'a donc rien a faire avec la puissance alimentee par le SSR lorsque celui-la est allume.
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enif
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RepRap Groupe d'Utilisateurs Francophone
Qu'est-ce que tu utilise comme firmware? Si c'est Marlin, verfie que la valeur de MAX_BED_POWER est mise au maximum (255). Tu peux aussi verifier le voltage directement a l'entree du lit chauffant - ca devrait etre tres proche aux 12V de l'alimentation.
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enif
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RepRap Groupe d'Utilisateurs Francophone
Könnte es sein, dass du am entsprechenden (linken) RAMPS Anschlussklemmen nur 5V angeschlossen hast, anstatt beide Engänge mit 12V zu versorgen?
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enif
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Elektrik & Elektronik
Et si tu as un display et l'option EEPROM est activee, tu peux aussi juste changer (=doubler) la valeur correspondante "Control-Motion-steps/mm" a l'aide du display - mais pas oublier d'ensuite saufgarder les valeurs changees dans l'EEPROM.
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enif
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RepRap Groupe d'Utilisateurs Francophone
As you have been using the same printer with the same non-graphic display without problems before moving to the new place, I guess that it was the short from wrongly connecting the endstops that caused the 1117 to blow. So simply replacing it should probably be okay.
But of course dc42 is right, reducing the 5V power drawn by the 2004 display would be much safer, e.g. by lowering the backlight c
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enif
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RAMPS Electronics
You can simply replace the 1117 voltage regulator which is near the power jack of the MEGA.
If you don't feel like soldering, you can also feed 5V from some other source (may be even your power supply has a 5V output) directly to the VCC pin of the RAMPS.
Finally, you can also just alsways keep the USB port connected to either a PC or to some USB type charge adapter.
QuoteAlso, are there other
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enif
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RAMPS Electronics
Mit dem automatisch vom Slicer generierten Support kann ich dir leider nicht helfen, da ich meine Objekte immer so konstruiere, dass sie keinen
Support benötigen - oder wenn doch, dann explizit von mir eingefügt, wo und wie ich es am besten finde...
Das von dir beschriebene Problem kommt oft vor und ich löse es immer mit einer einlagigen "Brücke" zwischen unterem breiten Loch und oberem enge
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enif
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Software
Looks like the 5V regulator (1117) on the Arduino board is damaged. (This happens easily e.g. when plugging in mechanical endstops the wrong way - as this will cause a short between 5V and GND as soon as the switch is closed.)
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enif
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RAMPS Electronics
What speed have you set? You might be above the limit of the maximum achievable step rate.
See the step rate page from the wiki
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enif
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RAMPS Electronics
you can use either hull() to do this, e.g.
hull(){
cube([8,8,0.1]);
translate([1.5,1.5,14.9])cube([5,5,0.1]);
}
or just use cylinder with $fn=4, something like:
rotate(45)cylinder(d1=8*sqrt(2), d2=5*sqrt(2), h=15,$fn=4);
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enif
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OpenSCAD
Souvent les carres noirs sont du a un mauvais contraste. As-tu deja essaye de l'ajuster avec le trimpot en arriere? Y vois-tu un changement quand tu tournes?
(Des fois il faut meme ajouter une resistance pour obtentir un bon resultat, voir aussi ici.)
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enif
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RepRap Groupe d'Utilisateurs Francophone
QuoteRickenharp...
Wenn ich denke das so ein Teil nur ein paar Drucktage durch hält...
Wie kommst du darauf, dass das Relais nur ein paar Tage halten sollte? Ich hatte meine 40A PKW Relais für ca 2 Jahre in (intensivem!) Gebrauch und hab erst danach auf Sevenswitch gewechselt. Aber nicht weil die Relais Probleme machten, sondern nur um das hörbare Klicken beim Ein-/Ausschalten zu vermeiden. Di
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enif
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Elektrik & Elektronik
Why don't you just use the menu "Design" instead of the function key - maybe with the mouse it's easier for you to hit the right spot?
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enif
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OpenSCAD