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The easiest way to know how powerful the PSU should be is to download from https://github.com/rcarlyle/StepperSim the Excel workbook which simulates the power absorbed by the stepper motor. Input the motor specifications, check in the graph the max speed at which you plan to run it, check the absorbed power, add 20% for the various losses. Once you know the ...


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You only need to connect one pair (one red, one black) of sufficient wire gauge to the single power connector's plus (red) and minus (black). There is no need to bundle multiple pairs from the PSU. Some pinout graphs are not clear in this respect! I've always connected the heated bed through an external MOSFET to keep large currents away from the board, but ...


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RAMPS 1.6 is very similar to RAMPS 1.4. Most, if not all, of the changes are hardware improvements, without making the core functionality different. Looking at the incremental changes between versions: To quote from RepRapWiki: RAMPS 1.5 The RAMPS 1.5 is a variation of the popular RAMPS boards that, like all other RAMPS boards, is plugged into an Arduino ...


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Your multimeter showing continuity doesn't necessarily mean there is a short. All your multimeter is doing is applying a small voltage and then, if the current that flows is over a certain threshold, reporting that there is continuity. The components (stepper drivers, microprocessor) on the board, draw current. That's normal. The current draw might be ...


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The driver has a potentiometer to change the voltage that is giving to the motors. [...] As one person answered me in another question, I would need 3.2 V to make the motor work well (2. Ω * 1.3 A = 3.2 V). You are misunderstanding that answer and what the potentiometer does. The potentiometer does not control the voltage going to the motors. It makes no ...


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I would not recommend changing Arduino powering. You can either do as you say and power Arduino by giving it regulated 5V to Vin, but then the ATMEGA2560 still will be powered through the 5V voltage regulator. The voltage regulator (NCP1117ST50T3G) needs to be supplied with 6.5V to give out regulated 5V. So you will be powering the Arduino with some 4V, ...


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Controller boards Please note (this is not to bash) that RAMPS shields are not the top of the line printer controller boards, investing in a more modern printer board platform (preferably not a clone of a known board), e.g. a 32-bit board might be a better solution. Any board with at least four stepper drivers should be sufficient (you can use the two Z ...


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As MIck wrote, we hope your board isn't damaged - with any luck there aren't any trace shorts in the melted region. My approach would be slightly different. Use some short bits of wire soldered into the board at one end and soldered to a new connector socket at the other end. This way you can put a new plug connector on the power leads and be able to ...


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Possible? Yes. Advisable? Perhaps not. Since it is the power connection, I would be tempted to solder the cables directly to the board. If the board is found to work, I would then install an external MOSFET for the heated bed, to reduce the amount of current that the controller has to handle.


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Well I found that I can use a DuPont cable to connect the diag1 pin to the right endstop There is also a beta functionality in the Marlin firmware I haven't tried: Just uncommenting SPI_ENDSTOPS definition * SPI_ENDSTOPS *** Beta feature! *** TMC2130 Only *** * Poll the driver through SPI to determine load when homing. * Removes the need for a ...


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