RAMPS 1.4 – Stepper marlin firmware extruder calibration

RAMPS 1.4 – Stepper marlin firmware extruder calibration


Okay, we want to calibrate the Stepper configuration that we have here, and I’m going to show you real easy method to do this What you want to do is you want to line up your filament inside your tube? So that it’s at just the tip of where you are and what you’re gonna. Do then is load your default firmware configuration from Marlin You’re gonna do a hundred steps you’re gonna measure the material that comes out and then we’re gonna do some math on that and Calibrate it exactly to where it needs to be so hang on Okay, we’re in the Pronterface software and it connect to the RAMPS The RAMPS is powered up, and it also has a power supply connected for the PSU unit or power supply unit so we’re gonna connect real quick Next thing we’re gonna do is we’re going to check to see if we can move So we do a small move just to verify things, it looks like it worked. Okay now we can’t extrude normally because if we hit extrude it to the cold So you have to put in, “M302 S0” that changes the temperature to zero so don’t have to worry about cold extrusion and We want to change the length to 100 mm That way we can measure it to see what the difference is So I’m gonna hit extrude and then on the camera. You’ll see the extrusion Okay now that it’s extruded We’re gonna take Pair of pliers and cut it as close as possible To the tip that we can This way we can measure it So that’s pretty close maybe a half a millimeter or a millimeter off. That’s fine, and I’ll show you the next part Okay, so we’re gonna take out the ruler we’re gonna measure this is in centimeters, so we’re gonna have to add a factor of ten afterwards So we’re gonna line it up Spool it out looks like we’re at forty five down here. I’m going to Move up to approximately where we are That looks like we’re at About 51 centimeters, which is five hundred and ten millimeters So the next trick is to keep track of that number so where we know we’re at five hundred and ten And In the driver it was set to another value, which we’ll check in a second and do the math Okay, now that we have five hundred and ten millimeters What we want to do is fix the firmware for the east step, so it’s this one easy row We want to change this to What the actual value is so we need to calculate it, so we’re gonna open up the calculator In the calculator we’re gonna put 500 we’re gonna divide it by our actual value of five ten We get point nine eight zero three, so we’re gonna Place that value in the firmware as 98 point zero four cause we’re going to multiply it by 100 And then we’re going to compile and upload Okay, we’re going to over to Pronterface We’re going to reconnect We’re going to put back in the M302 S0 so that we are at zero temperature and We’re gonna extrude the same amount and in a moment you’ll see that it might hopefully be shorter Okay, we have it set and we’re going to extrude a hundred Okay, we’re going to cut this off Okay now we’re gonna remeasure Looks like we almost ended exact So if it works for you on the first time it’s great if it doesn’t just keep remeasuring and doing the same calculation again until you hit it exact Thank you very much for watching my video, and if you liked it. Please hit the like button and Subscribe then. Thank you for your time.

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