Hello, I am using RAMPS 1.4 with Arduini MEGA. I want to print without PC. So what options are available as far as RAMPS 1.4 is considered. I have connected diode D1 on RAMPS, but it doesn't work. There are three pins on RAMPS VCC, 5V & PSU_ON... Which of the above pins should I connect & from what. Should I connect only VCC with 5v wire on ATX PSU? OR all of the three pins?by prashantdshinde - RAMPS Electronics
Hello, I have MK2 pcb heatbed from MakeMendel. The measured resistance is 2.1 ohms. Can I add a resistor in parallel to bed connection so that the overall resistance comes to 1.1ohms? If yes, which type of resistor would be compatible.by prashantdshinde - Reprappers
You mean the volt value on stepper drivers?by prashantdshinde - Reprappers
@ supraGuy, How to deal with missed steps??by prashantdshinde - Reprappers
Replaced 4 pin terminal blocks.by prashantdshinde - Reprappers
Changed RAMPS board....by prashantdshinde - Reprappers
Endstops wiring wrongly connected. Problem solved.. so closed.by prashantdshinde - Reprappers
Hi all, I am using my custom designed 3D printer based on Prusa i3. RAMPS 1.4 + Arduino Mega 2560. belt driven X & Y axis. M5 0.8mm pitch driven Z axis. For the value of 4000 if I print 10 mm cube I get 8.5mm. #define DEFAULT_AXIS_STEPS_PER_UNIT {80,80,4000,645.058567} But When I modify it for 4500 I get 12.5mm. Did anyone faced such issue. Let me know if I missed any info.by prashantdshinde - Reprappers
This happened for more than one RAMPS1.4 board.... trace cannot be broken for simultaneous two boards... can you show me in some images...? if possible...by prashantdshinde - Reprappers
LCD works when I connect it to USB on PC....but when USB is removed I see no display on LCD.by prashantdshinde - Reprappers
Mine is a custom designed 20x4 LCD + SD card module. LCD pins are connected to AUX2 as below:- LCD pins------>AUX2 pins 1,3,5,16 ------>GND 4----------------->D63 6----------------->D65 2,15------------->+5v 11--------------->D59 12--------------->D64 13--------------->D44 14--------------->D66 I have enabled G3D panel in config.hby prashantdshinde - Reprappers
@frostin, No success even after I removed comment from the lines...below... //LCD and SD support //#define ULTRA_LCD //general LCD support, also 16x2 //#define DOGLCD // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family) #define SDSUPPORT // Enable SD Card Support in Hardware Console //#define SDSLOW // Use slower SD transfer mode (not normally needed - uncomment if you'reby prashantdshinde - Reprappers
@ frosting, you mean the line#530 in Config.h??by prashantdshinde - Reprappers
Hi all, I have following config of my printer running Marlin_v1 :- MEGA2560, RAMPS1.4, 20x4 LCD, SD card module. I have connected the diode D1 on RAMPS to enable printing without PC, but I don't see any display on LCD when I disconnect the PC. Anyone faced similar issue??by prashantdshinde - Reprappers
check these settings in Configuration.h file for marlin firmware.. ========================= //// MOVEMENT SETTINGS #define NUM_AXIS 4 // The axis order in all axis related arrays is X, Y, Z, E #define HOMING_FEEDRATE {25*60, 25*60, 1*60, 0} // set the homing speeds (mm/min) // default settings #define DEFAULT_AXIS_STEPS_PER_UNIT {80,80,4000,625.70681} // default steps per unit for Ultimakby prashantdshinde - Reprappers
Hi all, If I replace the Mosfet on RAMPS with IRLB8743pbf, will it be able to drive large heatbed...?? This seems to be the best alternative.... Regards, Prashant.by prashantdshinde - Developers
Closed. Thanks all.by prashantdshinde - Reprappers
Topic is resolved & closed. The endstop connections were wrong & some settings in marlin were also altered. Thanks all.by prashantdshinde - Reprappers
hi, I have the same settings... still getting same issue...by prashantdshinde - Reprappers
Hi, I have a 3D printer with config as follows: ATMEGA2560, RAMPS1.4, Marlin v1 All axis homed correctly until I changed the RAMPS1.4 with a newer one. Now the X & Y axis does not homes correctly. When I press + in X dir then it moves correctly but for homing in X dir it moves in + dir only & that too for 10mm distance....Same is the case for Y axis. I have not changed anything in firby prashantdshinde - Reprappers
Hi, I have selected pin #45 to use with Seven switch. The command would be M42P45S255 But how do I use this.... Do I need to enter this command in the gcode file manually or some other way...?by prashantdshinde - Sanguino(lolu)
@ Stemer114... how do you control the temparature using slicer/extruder software?? I am using RAMPS1.4, built a seven switch but I am not sure from where to take the +12v supply..... from RAMPS D8 or ext PSU? If RAMPS then will it cross 11 A to heat the heatbed? OR If ext PSU then how will be the temprature controlled using slicer software? -Prashant.by prashantdshinde - Sanguino(lolu)
Hi Uklan, Can you plz let me know the changes to be done in configuration.h file of Marlin... also let me know if you succeeded in connecting the Seven Switch to Ramps1.4 & heatbed..by prashantdshinde - RAMPS Electronics
Hi cdru... thanks for the info.. some more queries I now want to use the D8 output as a switch that drives the Seven Switch's transistor's gate..... Does the existing seven switch circuit have this possiblity?? OR do I have to connect some more wires? If you can share an image/diagram, that would be really helpful.. Regards, Prashant.by prashantdshinde - RAMPS Electronics
Hi Andrew, Thanks for the info. But I have below queries: I connected +5v from AUX4 to the signal pin on seven switch & was successful in heating the bed... But when I connected the +12v from PSU I cannot control the ON/OFF of heatbed using the Pronterface.... If I connect the +12v of seven switch with the D8 of RAMPS, will I get more than 11AMPS out of it to heat the large heatbed withouby prashantdshinde - RAMPS Electronics
Hey Uklan, Did you tried cnnecting everything? Succeeded? Do let me know..by prashantdshinde - RAMPS Electronics
Hey Uklan.....can you plz help me here..? My post @ I have built a seven switch to work it on RAMPS1.4 with marlin... but I dont know the connection to its connectors & the changes that need to be done in marlin code... Can you please help me to get this worked?by prashantdshinde - RAMPS Electronics
Hi all, I connected +5v from AUX4 to the signal pin on seven switch & was successful in heating the bed... But when I connected the +12v from PSU I cannot control the ON/OFF of heatbed using the Pronterface.... If I connect the +12v of seven switch with the D8 of RAMPS, will I get more than 11AMPS out of it to heat the large heatbed without melting down the connectors??by prashantdshinde - Developers
Got it.... I forgot to connect GND pin on click encoder to RAMPS..by prashantdshinde - Reprappers
ok, so I should connect a +5v pin on RAMPS to the +5V signal pin on Seven switch... correct? Can I use any +5v pin from Aux ports on RAMPS 1.4?by prashantdshinde - Developers