reprap:firmware:calibration

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reprap:firmware:calibration [2016/11/06 13:39] enderreprap:firmware:calibration [2018/12/02 02:27] (current) – external edit 127.0.0.1
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 === Required Tools === === Required Tools ===
  
-  * * * - 150mm length of filament (white/light colouring is preferred so you can clearly see the marks)150mm length of filament (white/light colouring is preferred so you can clearly see the marks)- 150mm length of filament (white/light colouring is preferred so you can clearly see the marks)150mm length of filament (white/light colouring is preferred so you can clearly see the marks)* - 150mm length of filament (white/light colouring is preferred so you can clearly see the marks)150mm length of filament (white/light colouring is preferred so you can clearly see the marks)- 150mm length of filament (white/light colouring is preferred so you can clearly see the marks)150mm length of filament (white/light colouring is preferred so you can clearly see the marks) +  * 150mm length of filament (white/light colouring is preferred so you can clearly see the marks) 
-  * * * - Vernier CalliperVernier Calliper- Vernier CalliperVernier Calliper* - Vernier CalliperVernier Calliper- Vernier CalliperVernier Calliper +  * Vernier Calliper 
-  * * * - MarkerMarker- MarkerMarker* - MarkerMarker- MarkerMarker+  * Marker
  
 === Steps === === Steps ===
 +  * Remove the hotend so you don't waste a ton of filament
  
-Measure and mark 120mm on a length of filament+  * Measure and mark 120mm on a length of filament 
 +{{:reprap:firmware:img_1264.jpg?nolink&300|}}
  
-[[https://3dprint.wiki/lib/exe/detail.php?id=reprap:firmware:calibration&media=reprap:firmware:img_1264.jpg|{{:reprap:firmware:img_1264.jpg?300  }}]]+  * Insert filament into extruder so that the top of the mark is just above the housing of the extruder 
 +{{:reprap:firmware:img_1265.jpg?nolink&300|}}
  
-Insert filament into extruder so that the top of the mark is just above the housing of the extruder +  * Extrude 100mm of filament
- +
-[[https://3dprint.wiki/lib/exe/detail.php?id=reprap:firmware:calibration&media=reprap:firmware:img_1265.jpg|{{:reprap:firmware:img_1265.jpg?300  }}]] +
- +
-Extrude 100mm of filament+
  
 <code> <code>
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 </code> </code>
  
-Measure distance between second mark, and housing of extruder. Measure distance between second mark, and housing of extruder Measure distance between second mark, and housing of extruder. Measure distance between second mark, and housing of extruder \\ [[https://3dprint.wiki/lib/exe/detail.php?id=reprap:firmware:calibration&media=reprap:firmware:img_1268.jpg|{{:reprap:firmware:img_1268.jpg?300}}]]+  * Measure distance between second mark, and housing of extruder. 
 +{{:reprap:firmware:img_1268.jpg?nolink&300|}} 
  
 The difference in distance will either be greater than, less than, or equal to 120mm. If you measure equal to, then you're done and your extruder motor has been properly calibrated. In this case, there is a difference of 17.91mm *less* than 120. So the distance travelled is 120-17.91 = 102.09mm. It's close, but not quite right. The difference in distance will either be greater than, less than, or equal to 120mm. If you measure equal to, then you're done and your extruder motor has been properly calibrated. In this case, there is a difference of 17.91mm *less* than 120. So the distance travelled is 120-17.91 = 102.09mm. It's close, but not quite right.
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 The calculation is as follows: The calculation is as follows:
  
-<code> + 
-(new Steps) = ((expected distance) (actual distance) ) * (original steps/mm) +''Steps<sub>new</sub> = (Distance<sub>expected</sub> / Distance<sub>actual</sub> * Steps<sub>Original</sub>'' 
-</code>+
  
 From this formula we can calculate the new steps/mm by plugging in the values: From this formula we can calculate the new steps/mm by plugging in the values:
  
-<code> 
-(new steps) = ( 100 / 102.09 ) * 90 
  
-(new steps) = 88.16 steps/mm +''Steps<sub>new</sub> = ( 100 / 102.09 * 90'' 
-</code>+ 
 +''Steps<sub>new</sub> = 88.16 steps/mm'' 
  
 Save the new steps to the printer with ''M92 E88.16'' Save the new steps to the printer with ''M92 E88.16''
  
-//**NOTE**: This setting will not persist! You will have to either set the setting in the EEPROM (through printer menus) or in ''configuration.h''. The purpose of saving the setting like this, is to redo the calibration and test that it is accurate.//+**NOTE**: This setting will not persist! You will have to either set the setting in the EEPROM (through printer menus) or in ''configuration.h''. The purpose of saving the setting like this, is to redo the calibration and test that it is accurate. 
 + 
 +To save the setting in ''configuration.h'' edit the following line: 
 +<code c> 
 +#define DEFAULT_AXIS_STEPS_PER_UNIT   {100,  100, 400, 88.16} // { X, Y, Z, E } 
 +</code>
  
  
 +===== XY Calibration =====
  • reprap/firmware/calibration.1478435971.txt.gz
  • Last modified: 2018/12/02 02:27
  • (external edit)