printer not homing

[jbaker22]

Hello, I uploaded marlin firmware to my arduino mega that uses ramps 1.4, and my printer will not home correctly. When I hit home in repetier host, the axis moves a centimeter. have to press the button repeatedly till it hits the endstop, where it bounces back as it should. Where do I fix this in the firmware?

[HodgerTech]

Hey, I had this issue too!!! Sometimes logic from the limit switch is opposite than what marlin usually uses (In configuration.h). Just invert the limit switch logic and your printer should home correctly. See attached picture. I had to switch from false to true to get my printer to work. Try this first and if it works or not let me know!

Good Luck!!!