Hi, I've got problem with my homemade printer. There is an issue with endstops which are triggered when they don't suppose to be. I tried to take only one cable and connect each endstop separetely after doing this i recognized that X endstop works great but Y and Z endstops are always triggered. Sometimes when cable was connected to Z axis endstop and pressed, M119 return Y as open... Than I used only one endstop and connect it to all X Y Z slots on ramp and there was the same problem when X endstop worked perfectly so I think there is problem with ramps or mega bard... Also when printer is homing Y axis only bump but doesnt stay on pressed endstop and its few centometers away... Once when printer was printing the voltage stabilizer on mega burned I dont if there is any connection with this endstops issue... Also I changed on ramps mosfet for hotbed, but i dont think that there is any connection... Thank u for any help I am quite new in this porblematics :) https://reprap.org/forum/read.php?1,791550,791550#msg-791550 Mon, 13 Jul 2026 17:45:37 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,791550,791574#msg-791574 https://reprap.org/forum/read.php?1,791550,791574#msg-791574 Dust General Sun, 08 Oct 2017 16:32:26 -0400 https://reprap.org/forum/read.php?1,791550,791565#msg-791565 https://reprap.org/forum/read.php?1,791550,791565#msg-791565
It stays opened all time and sometimes is Y triggered or opened... I tried 4 different cables so I dont think that problem is there :( I think there are some hardware troubles...]]> brazik General Sun, 08 Oct 2017 13:31:47 -0400 https://reprap.org/forum/read.php?1,791550,791564#msg-791564 https://reprap.org/forum/read.php?1,791550,791564#msg-791564
with marlin have a peek around line 489 in the config.h file

// Mechanical endstop with COM to ground and NC to Signal uses "false" here (most common setup).
#define X_MIN_ENDSTOP_INVERTING false // set to true to invert the logic of the endstop.
#define Y_MIN_ENDSTOP_INVERTING false // set to true to invert the logic of the endstop.
#define Z_MIN_ENDSTOP_INVERTING false // set to true to invert the logic of the endstop.
#define X_MAX_ENDSTOP_INVERTING false // set to true to invert the logic of the endstop.
#define Y_MAX_ENDSTOP_INVERTING false // set to true to invert the logic of the endstop.
#define Z_MAX_ENDSTOP_INVERTING false // set to true to invert the logic of the endstop.
#define Z_MIN_PROBE_ENDSTOP_INVERTING false // set to true to invert the logic of the probe.

what happens if you swap Z to true.]]> jinx General Sun, 08 Oct 2017 13:27:20 -0400 https://reprap.org/forum/read.php?1,791550,791550#msg-791550 https://reprap.org/forum/read.php?1,791550,791550#msg-791550
I've got problem with my homemade printer. There is an issue with endstops which are triggered when they don't suppose to be. I tried to take only one cable and connect each endstop separetely after doing this i recognized that X endstop works great but Y and Z endstops are always triggered. Sometimes when cable was connected to Z axis endstop and pressed, M119 return Y as open... Than I used only one endstop and connect it to all X Y Z slots on ramp and there was the same problem when X endstop worked perfectly so I think there is problem with ramps or mega bard... Also when printer is homing Y axis only bump but doesnt stay on pressed endstop and its few centometers away... Once when printer was printing the voltage stabilizer on mega burned I dont if there is any connection with this endstops issue... Also I changed on ramps mosfet for hotbed, but i dont think that there is any connection...

Thank u for any help I am quite new in this porblematics :)]]> brazik General Sun, 08 Oct 2017 11:50:32 -0400