![]() We can see that our steppers are off by up to 1mm. Make sure you are using a slight amount of pressure. If you have an elephant’s foot on the bottom of your print, this will throw off the measurement. Take note to measure above you your first three layers. Let’s grab our calipers and measure the sides of X Y Z. 2mm layer height with 2 inner walls, 2 top/bottom layers, and 10% infill. Then, you are going to print this with a. First, you need to load the test cube into your preferred slicer. If you haven’t already, go ahead and download the test cube from the Items Needed section. First, we need to print out the test cube.Make sure your probe does not touch anything else while testing the DC voltage, or you may short out the Stepper Driver, the board, or may even cause injury.Ĭalibrating Your X, Y, and Z Steppers Now that we have set up our VREF, Let’s Calibrate Our X Y Z Steppers. Ground the Multimeter to your power supply and CAREFULLY using the hot lead, measure the DC voltage off your VREF pot. If your Multi-Meter does not support auto ranging, then you will set it to. We need to grab our Multi-Meter and our Screw Driver. VREF POT: 2.0= 0.8 × 2.5 Calibrating Your VREF HEMERA E STEPS DRIVERStepper Driver Modelįinding VREF: Stepper Current/Max RMS = VREG Seeing the algorithm below, we see our VREF should be set at. The maximum settable stepper current for my stepper motor (NEMA 17) is 2.0A, but you will need to verify what the maximum settable stepper current is for your stepper motor, as this will vary depending on your type of stepper motor. This shortens the stepper motor’s life and can cause your motors to fail. If your VREF is too high, your motors can overheat. These can be seen by having layer shifts in your prints. If your VREF is too low, your stepper will not have enough torque and this will cause skipped steps. Properly tuned VREF is the key to accurate stepper calibration. VREF is merely the voltage regulated from your stepper driver to your stepper motor. If you do not have Simplify 3D, OctoPi, or a slicer that supports sending terminal commands, Download Pronterface. HEMERA E STEPS SOFTWARE
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