With no endstops pressed, send a M119 to the printer, it should report all endstops open Then hold1 endstop with your finger and send M119 again, it should now repotr that endstop as triggered If the above does not happen then you likely have your endstops inverted in firmwareby obewan - RAMPS Electronics
QuoteReplace So, if I set this to minus 10, It will startup ? yep that should workby obewan - Repetier
Please dont power it up with the endstops plugged in as show in the picture, you have them conected to +5v and gnd. 2 wire endstop switches should be plugged into the 2 outer pins, gnd and signalby obewan - RAMPS Electronics
There is a minimum temp setting in the firmware, normally this is used to detect a disconected thermistorby obewan - Repetier
Make sure you have the correct board set in firmware, allso check pins_RAMPS.h #define E0_ENABLE_PIN 24by obewan - RAMPS Electronics
You may have a bad connection to your hot end thermistor, turn on the heater and wiggle the wiresby obewan - Prusa i3 and variants
Thats great thay we got it printing, now the fun starts As PD says, make sure you dont have a fan blowing onto the heater blockby obewan - Printing
A pic might help. The mosfet will be switching the 0v side of the bed, do you measure 12 volts between 0 volts terminal on the controller power socket and the terminals on the bed( black meter probe to 0 volt in, red probe to bed terminal)by obewan - Printing
If you have a ramps 1.4 board The bed is fed by fuse F2 (the larger of the 2 fuses) MFR1100, check the voltage on both ins, should be ~12voltsby obewan - Printing
Yes that line is correct, change the 2560 to 400. However the old setting will be used from the eeprom, so either run the eeprom clear sketch in arduino/files/examples before you upload the firmware or after uploading new firmware,use your printing host (repetier/pronterface) and send a M502 M500 those 2 codes will read the config data and store it too eeprom * If Z now move a bit slow, aby obewan - Printing
You can edit the steps/mm in config.h and then re load the firmware, or a lot easier you can edit them directly in the eeprom via repetier host ia the config menu at the top. Yes you definitly have a 4 start lead screw on that printer so your Z steps should be set to 400by obewan - Printing
Just wire the switch to Z_MIN gnd and signal pins, no resistor needed just make sure Zmin endstop pullup is enabled in config.h(which it will be if you have removed the // from #define ENDSTOPPULLUPS)by obewan - RAMPS Electronics
Cos 4*60 is usually too fast for nema17's fitted with M5 threaded rods with a step/mm of 4000, motors just sit and squeel at youby obewan - Firmware - Marlin
Or you could mount a servo and fix the switch to the servo arm, then rotate servo so switch activates lower than the nozzle and then retracts after levellingby obewan - RAMPS Electronics
Hmm,i see what you mean, from the video that looks like about a 2mm jump from 1st to 2nd layer. If you home Z and then send a G1 Z20 F2000 how far does Z actually move. Allso can you check what Z steps you have set in the eeprom (config menu in repetier host) Hard to see on the video, but is that a M8 threaded ror or is it a M8 lead screw on the Z axis. if it is a lead screw then it is probby obewan - Printing
found this backup gen 6by obewan - Sanguino(lolu)
You also need to set the correct nozzle size in the slicer so it can calculate the correct extrusion, standard size supplied with most printers would be 0.4by obewan - Firmware - Marlin
Quoteas soon as the print starts it raises somewhere about 0.3mm above the bed Just re-read your 1st post , umm If you have 0.3 set as your layer height in the slicer, then yes it will raise Z too 0.3 at start of print, it is not supposed to start print at Z0. If 1st layer is not sticking to the bed then you either have your Z0 slightly too high or 1st layer extrusion in silcer set to low.by obewan - Printing
If host is stacking up commands, then it is not connected to the printer, have you plugged into same usb on the computer as last time. Check what usb number is defined to arduino in windows device manager/ports. make sure this port number is set in host printer config.by obewan - Reprappers
Ok thats a MPX 3.0 board, i believe they are pre set to 1/16 microstepping. does your printer have a micro switch for Z homing or does it use a inductive sensorby obewan - Printing
are you running windows or linux ?by obewan - General
Ok,turn of the power and make sure you have 3 jumpers fitted under each stepper driver pcbby obewan - Printing
micro step mode is set by fitting links on the controller board. what board do you have?by obewan - Printing
Hi DC. How about a Arduino Due with a Radds board. looks an interesting combo.by obewan - RAMPS Electronics
depends what ramps board you have mega2560 with ramp1.4 is board 43by obewan - Printing
Sounds like your steps/mm or speeds are too high for the mk8 extruder and Z motors At 1/16 micro stepping the extruder steps should be ~120/mm The Z motors with 5mm rods should be 4000 steps/mm and max speed ~120 What firmware are you using ? Can you post the configuration.h file (as a attachment)by obewan - RAMPS Electronics
Is that 130 ohms or 130 kilo ohms ? I would try lashing up the new thermistor to try it. If the old thermistor is open circuit then the firmware will prevent the bed from heating, but pronterface should allso indicate the errorby obewan - Prusa i3 and variants
Quoteprozer i dont find r20 in the schematics of my mks base 1.4 =( You got a schematic of the mks base 1.4 ?by obewan - Reprappers