This 3D Printer Bed Levelling tool uses a Pulse Induction Metal Detection Sensor and a LED Bar graph to show the relative distance from the Print Head to the hotbed. This is an independent add-on th…Read More…
This 3D Printer Bed Levelling tool uses a Pulse Induction Metal Detection Sensor and a LED Bar graph to show the relative distance from the Print Head to the hotbed. This is an independent add-on that does not require any code changes to printer firmware or wiring. It is easy to attach to check and tune bed levels.
The board is very sensitive and is very stable which makes the this tool very effective with the LED bar graph. It allows to set and check that the bed level to the hot end is correct - the led bar graph is very easy to read when homing.
The device can be calibrated by using the on-board button . Simply by pressing the calibration button, the baseline height is reset to zero and the new height is detected and set with the LED indicator to the centre of the bar graph.
1, Attach the Bed Levelling unit to the print head by pushing onto the stock housing. Connect the USB power to the unit. You should see a power-up sequence on the LEDs.
2, Adjust Z axis manually down by turning the Z-Axis drive thread until you just hear the microswitch activate with a click.
3, Push the calibrate button (gently so as not to move the carriage down or up). Once calibrated a LED should be somewhere in the centre of the bar graph.
4, Shift the head across the X and Y axis as in the video to determine the relative height of each part of the bed.
5, Print the Test Print with the test print file provided and use the Bed Leveller and test print to quickly validate heights. If the LED on the Bar Graph goes down below the reference then the Bed is lower so needs moving upwards. As you adjust the bed level you will see the LED move up to the correct height.
3D Printable parts available here :https://www.thingiverse.com/thing:3336509
Example of use
1 x PCB with discrete electronic parts Kit included - resistors - analogue difference comparator - transistors - capacitors - connectors
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Ira | May 23, 2020
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