Good Evening,
Printer: Prusa i3 + Ramps 1.4
Configuration File: [pastebin.com]
Voltage Divider Wiring: [dl.dropboxusercontent.com]
Sensor: [www.amazon.com]
I am at kind of a lost right now... I pruchased a LJ12A3-4-Z/AX 4mm NPN Proximity Sensor, and I can't seem to get it to trigger issuing a M119 command.
I have wired a voltage divider with 2x10kohm resistors, and I have checked the voltage output which gives me 5v. Currently I have it setup where it is supplying the sensor with 12v, Wired the Output wire to signal, and the ground wire to GRD on the ramps 1.4 board end-stop, leaving the only open pin vcc on the endstop zmin pin-out. I know the sensor works because when i put it up to metal the LED on the sensor dims and the output voltage changes from 0v->5v. Also I know the port on my ramps 1.4 works because I can put back my mechanical switch and it OPEN-TRIGGERED with the m119 command. Anyone have any ideas on what could be the problem?
Edited:
I have checked the output for the endstop pinouts on the ramps 1.4 board and it is still supplying 5v from Signal-Ground. I thought disabling the ZMIN_PULLUPS in the firmware would stop the 5v from going through the Signal pin?? If so why would it still be supplying 5v over the pin?
Thanks
Printer: Prusa i3 + Ramps 1.4
Configuration File: [pastebin.com]
Voltage Divider Wiring: [dl.dropboxusercontent.com]
Sensor: [www.amazon.com]
I am at kind of a lost right now... I pruchased a LJ12A3-4-Z/AX 4mm NPN Proximity Sensor, and I can't seem to get it to trigger issuing a M119 command.
I have wired a voltage divider with 2x10kohm resistors, and I have checked the voltage output which gives me 5v. Currently I have it setup where it is supplying the sensor with 12v, Wired the Output wire to signal, and the ground wire to GRD on the ramps 1.4 board end-stop, leaving the only open pin vcc on the endstop zmin pin-out. I know the sensor works because when i put it up to metal the LED on the sensor dims and the output voltage changes from 0v->5v. Also I know the port on my ramps 1.4 works because I can put back my mechanical switch and it OPEN-TRIGGERED with the m119 command. Anyone have any ideas on what could be the problem?
Edited:
I have checked the output for the endstop pinouts on the ramps 1.4 board and it is still supplying 5v from Signal-Ground. I thought disabling the ZMIN_PULLUPS in the firmware would stop the 5v from going through the Signal pin?? If so why would it still be supplying 5v over the pin?
Thanks