... ich kenne sowas meist im Zusammenhang mit verkehrtherum aufgestecken Endschaltern bzw. Kurzschluß zwischen +5V und GND - dann raucht aber typisch der Spannungsregler ab ... Ansonsten bei Amazon schauen - Oder auch z.B. hier in D bei Reichelt -by VDX - Elektrik & Elektronik
... done ...by VDX - Administration, Announcements, Policy
... formy applications (dispensing, laser-engraving, camera-teach-in, ...) I've modified Marlin4Due with macros for tool changing and offset positioning ... but this won't work with common versions, as there were many more changes and added classes and GUI-modification too ...by VDX - Printing
Hi Michael, diese "Steifen" Designs erinnern mich an die fliegenden Rasenmäher -- da gefallen mir die "bionischen" Studien von Festo (Möve, Taube, Pinguin, Helieum-Qualle, ...) deutlich besser Hier könnten im RC-Bereich evtl. noch die "Pterodactyli"-Modelle für Afsehen sorgen ... fliegende Flugsaurier mit starren oder beweglichen Flügelnby VDX - Offtopic
... this could show, that you have 16 steps per mm instead of 80, what you defined. Recalculate with motor type, microstepping amount, gear ratio, screw measure and such ...by VDX - Reprappers
... dunno exactly -- but shouldn't wreck the board either ...by VDX - Laser Cutter Working Group
@dust -- yes, actually there are even faster µC's (use some with 200MHz or faster) - the ArduinoDue was my first replacement/optimization for the 16Bit-Arduinos many years ago, but still usefull for most tasksby VDX - Laser Cutter Working Group
... I'm using the pulses for the extruder-stepper (mostly E0, see the pin-definition in "pins.h" for the assigned pin) to pulse the laser-driver. Here one of the possible pin definitions, where the pin 64 would be used for pulsing the laserdiode: #define E0_STEP_PIN 64 // Z2 STP #define E0_DIR_PIN 63 // Z2 DIR #define E0_ENABLE_PIN 62 // Z2 ENAby VDX - Laser Cutter Working Group
... I'm on a different path - using a Marlin4Due (much faster with a 32Bit-Arduino) and no common PWM, but the extruder-pulses for driving the laser "speed-independant". Essentially it's emitting laser-pulses when moving with G1-moves and without laser when moving with G0. Instead of PWM the E-value in a G-code like "G1 Xxxx Yyyy Eeee Ffff" defines, what amount of laserpulses will be uniformlyby VDX - Laser Cutter Working Group
... so my idea was to thermally "convert" collected materials into coal and use it together with sand, fibers and lignin as "binder" to build floating blocks and assemble big and even bigger rafts from them You can read trough some of the descriptions here -by VDX - green talk
Quote Wow thanks I’ll give it a try. Thank you for your hard work!! ... I'll second itby VDX - Firmware - Marlin
... check the MOSFET, if its working ...by VDX - RAMPS Electronics
... done ...by VDX - Administration, Announcements, Policy
... ja, die Natur kanns immer noch am Besten (bez. Energie+Rohstoffe sparen) Was noch ein interessantes Thema sein dürfte, wären "Nurflügler" im Design von Flug-Hörnchen ...by VDX - Offtopic
... looks like a DC-DC stepdown-converter. So essentially any converter with enough transmit current should do too ...by VDX - General
... if it's showing some "electric life", then power it first per external PS and then per USB only - and measure, if the +5V pins gives at around 5V or much lower (then, most likely, burnt regulator) ...by VDX - General
... 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