... with some luck only a fuse or the +5V regulator is wrecked - replacing it could revoke the board ...by VDX - General
... this question could be some ten years too late -- today you have to decide between too much of options, beside the priceby VDX - General
... evtzl. mal eine oder mehrere ältere IDE's installieren und schauen, ob es damit geht ...by VDX - Software
... früher gab's unterschideliche Verfahren, das Flashen zu starten - bei einigen Boards mußtest du zu einem bestimmten Zeitpunkt (direkt nach dem Kompilieren) z.B. kurz den Reset-Taster betätigen ... bei anderen wurde ein Pin auf einen Kondensator gelegt ... andere wieder anders. Bei einigen Arduinos gabs auch Probleme mit dem USB-Chip, so daß da auch wieder zwischen Varianten unterschieden wurby VDX - Software
... schau mal, ob du Infos dazu findest, welcher Bootloader auf dem Arduino vorhanden sein muß oder mit welchem Protokoll die Firmware geflasht wird -- die IDE kann unterschiedliche Methoden und Protokolle. Eventuell mußt du auch einfach nur für dein Arduino-Board den genauen Typ einstellen (5V/3V, "altes"/"neues" Protokoll ... o.Ä.) ... da gab's schon mehrfach Updates und Unstellungen ...by VDX - Software
... NEMA23 ... but mostly for other applications than 3D-printing too ...by VDX - Mechanics
... to avoid this "wavy" movement I'm using "overpowered" steppers (=much "stiffer" microsteps) and/or gearing ...by VDX - Mechanics
... it's lack of "stiffness" too - the magnetic field inbetween the steps (where microstepping is performed) ist not very strong, so the movement will result in "wavy" positioning with "compressed" steps between the fullstep positons and then a "jump" to the next fullstep ...by VDX - Mechanics
... most likely the +5V-regulator on the board is burnt - so it will work only, if powered per USB ...by VDX - General
Hi Thorsten, ... wir haben hier übrigens auch ein Deutsches Sub-Forumby VDX - Firmware - Marlin
.. hab' mal spaßeshalber das 24x2W-Diodenmodul (drei Reihen à acht 2W-Dioden) angesteuert - hab' nur ein Netzteil mit max. 31V ... das Modul braucht für volle Leistung 36-38V (also Strom nur bis maximal 800mA ... maximal kann das 4.8A ab) -- im "Fernfeld" hats interessante Verzerrung der 3 Diodenreihen: Der "Spot" ist eher ein "Fleck" von etwa 3mm Größe, was ausreichend war, um den Bündelstraby VDX - Laser-Ecke
... this is mostly calculated with some sort of adapted rounding or Bresenham-algorhythmus ...by VDX - Firmware - Marlin
... you can find all sorts and sizes of nearly spherical microparticles with distributions around 50, 10 or 5 microns, normally used for SLS 3D-printing. From my old experiments with MRF (Magneto-Rheological-Fluids) I have some 100 gramms of carbonyl iron spheres, which are perfect round and with 50/10/1 microns distribution ... and some samples of different metals or ceramics with similar sizesby VDX - CoreXY Machines
... OK, then you have already tested with. By the way - was there much different behaviour between different powders/sizes?by VDX - CoreXY Machines
... maybe another idea -- instead of sand you could use glass micro-spheres (as used for pearl-blasting) and illuminating them from inside the table *** EDIT *** -- maybe an LCD-screen for illuminating/freeform-imaging under the glass?by VDX - CoreXY Machines
... das erfordert ein passendes Programm (z.B. Vectric Aspire) und einiges an Praxiserfahrung - so einfach ist das nicht gemacht und würde vermutlich Tage dauern ...by VDX - Schwarzes Brett
... aus diesem Bild geht das nicht vernünftig - die Graustufen "passen nicht zur Z-Höhe"by VDX - Schwarzes Brett
... um das nach 3D bzw. "plastisch" zu konvertieren brauchst du eine "Z-height"-Datei mit der jeweiligen Höhe in Z entsprechenden Graustufen - oder 2 oder mehr Fotos/Bilder eines 3D-Objekts aus unterschiedlichen Winkeln.by VDX - Schwarzes Brett
... there are different types of microstepping drivers -- some have "complex" behaviour, like the Precitec/Berger-Lahr drivers, which can handle a high torque 3-phase-stepper with "full-steps" in the range of 200, 400, 500, 800 and 1000 steps per revolution (or this numbers all 10x for "microstepping") - here every single step or micro-step is performed. Too have high high-precision drivers fromby VDX - Firmware - Marlin
... if you have some birds in the same room - they will quit around 200degC ... humans are much more resistantby VDX - Safety & Best Practices
... warum fährst du die schnellen Bewegungen nicht mit G0? Eventuell ist die Maximalgeschwindigkeit für G1 auf unter 5000 beschränkt - dann wird die Bewegung mit der vordefinierten "Maximaleinstellung" gefahren ...by VDX - Software
... oh, my fault! - jes, the F-value ... was to deep into extruder pulsing for the lasers Forget "frequency"! - it's not a static pulsing, but every pulse/pause is calculated separately and contains acceleration/decceleration at begin/end too. It's simply a relation of moving from one "step"-position to the next for the actual vector (only Z or XY+Z) -- so - regardless, how fast or slow the moby VDX - Firmware - Marlin
... normally the stepper motors aren't driven by PWM, but are "flank-triggered" and the pulses are calculated for set speeds in the G-code vs. moving length. The parameters in the config.h for the "steps per mm" value will define the amount of steps and the "frequency" will be calculated by the E-value in the G-code for the specific Z-length ...by VDX - Firmware - Marlin
... better use external stepper-driversby VDX - RAMPS Electronics
... no problems with reviving old threads, if helpfull Maybe you can think about "rolling paper on a drum" instead of stacking sheets? Much faster (no pause for stacking needed) ... but slightly more complex slicing geometries, than horizontal only ...by VDX - Developers
... the ESP32-cam is ready for this ... needs only a GPS module -by VDX - Robots!
... better search for a complete delta at ebay or another "fleamarket" - they were pretty common some years ago, so should be some there ... much cheaper, than collecting the parts ...by VDX - Reprappers
... by the way -- printed plastic parts can give pretty long lasting elements, if used as casting preformsby VDX - CoreXY Machines