Thingiverse
K-Touch Auto bed leveling
por KareemHefnawy
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# Summary
An Auto-bed leveling sensor made from a 12mm tactile switch and a 12v linear solenoid,
it can be mounted instead of a BL-Touch directly , is compact, cheaper, and even more accurate ( Standard Deviation 0.0024 mm ) .
https://youtu.be/XFoX_xrcobI
### Parts used :
**JF-0826B DC 12V 2A Pull Type Linear Solenoid
12 mm Tactile switch
Tip31c transistor ( you have to install heatsink )
500 Ohm resistor
330 Ohm resistor
#### Note:
you will have to heat the M3 nut in button holder for it to be a perfect fit.
# Software:
**Edit configuration.h Make sure your head drives into the middle and up before homing Z-axis
**#define Z_SAFE_HOMING** Disable MIN_SOFTWARE_ENDSTOPS so that you can adjust Nozzle/Probe Distance easily. However, once configured make sure you re-enable them to give you extra safety if you want.
**#define MIN_SOFTWARE_ENDSTOPS** In our case we simply use the zMin Endstop Header that was used by the mechanical ends
An Auto-bed leveling sensor made from a 12mm tactile switch and a 12v linear solenoid,
it can be mounted instead of a BL-Touch directly , is compact, cheaper, and even more accurate ( Standard Deviation 0.0024 mm ) .
https://youtu.be/XFoX_xrcobI
### Parts used :
**JF-0826B DC 12V 2A Pull Type Linear Solenoid
12 mm Tactile switch
Tip31c transistor ( you have to install heatsink )
500 Ohm resistor
330 Ohm resistor
#### Note:
you will have to heat the M3 nut in button holder for it to be a perfect fit.
# Software:
**Edit configuration.h Make sure your head drives into the middle and up before homing Z-axis
**#define Z_SAFE_HOMING** Disable MIN_SOFTWARE_ENDSTOPS so that you can adjust Nozzle/Probe Distance easily. However, once configured make sure you re-enable them to give you extra safety if you want.
**#define MIN_SOFTWARE_ENDSTOPS** In our case we simply use the zMin Endstop Header that was used by the mechanical ends
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