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Re: P802M Prusa i3 Unofficial Support Thread - 9 years ago

Quotemiro_mar I've checked on my Melzi board, with a multimeter: - X end stop (ORIG_X_MIN_PIN) is connected to pin 21 - Y end stop (ORIG_Y_MIN_PIN) is connected to pin 22 - Z end stop (ORIG_Z_MIN_PIN) is connected to pin 23 This corresponds the attached Melzi schematic Something is strange : many pin assignment have an offset of 3 between pins.h and Melzi schematic Could you please check with

by minhtri.sm - Prusa i3 and variants

Re: P802M Prusa i3 Unofficial Support Thread - 9 years ago

* Melzi pin assignment * ****************************************************************************************/ #if MOTHERBOARD == 63 #define KNOWN_BOARD 1 #ifndef __AVR_ATmega644P__ #ifndef __AVR_ATmega1284P__ //#error Oops! Make sure you have 'Sanguino' selected from the 'Tools -> Boards' menu. #endif #endif #define ORIG_X_STEP_PIN 15 #define ORIG_X_DIR_PIN 21 #define

by minhtri.sm - Prusa i3 and variants

Re: P802M Prusa i3 Unofficial Support Thread - 9 years ago

Quotejnsbanman Quick poll... What is everyone using as their steps per mm for their extruder (original mk8). Mine is currently set to 90 but it is grossly over extruding on solid layers. I leave it 90 too but increase extrusion multiply to 1.04 and extrusion width 115% with feedrate about 12-16 mm/s. My external perimeter face and infill solid face is very nice.

by minhtri.sm - Prusa i3 and variants

Re: P802M Prusa i3 Unofficial Support Thread - 9 years ago

The older version of Arduino IDE can't compressed latest repetier firmware light enough to flash it to melzi memory. I use Arduino 1.6.7 to flash firmware, any version older always get "memory not enough" error. By the way buy an USBasp with cable, everything will be more easy to re-burn bootloader

by minhtri.sm - Prusa i3 and variants

Re: P802M Prusa i3 Unofficial Support Thread - 9 years ago

My endstop config in configuration.h is like the orginal. You don't need to upload .eep to Melzi board Base on your describe and use method of exclusion. Firmware is good (My normally running firmware, i gave it to you) Mechanical component (tooth belt, thread rod, machine body,...) is good Wire is good Stepper motor and stepper driver is good too (If stepper driver mess up, you cant control mot

by minhtri.sm - Prusa i3 and variants

Re: P802M Prusa i3 Unofficial Support Thread - 9 years ago

Check your wire plug into the right place first, reinstall slicer program with default setting and default print config. This is my config for repetier 0.92.8 (running good with my zonestar 3d printer) By this link, you must install Sanguino for Arduino IDE by this link and have a USBasp as programmer to burn the right bootloader for Zonestar Melzi board or you can only flash firmware with at

by minhtri.sm - Prusa i3 and variants

Re: P802M Prusa i3 Unofficial Support Thread - 9 years ago

Quotejnsbanman Hello again all.. I am getting slightly out of round holes on the Z axis. I have done the Z axis upgrade to 1 stepper/belt on my printer. The pulleys on the motor and 2 lead screws are all the same number of teeth, belt is reasonable tight. My steps per mm is set to 400 as per all the calculators. I have my Z offset at 0 but i set the nozzle to approximately 0.127mm above the bed.

by minhtri.sm - Prusa i3 and variants

Re: P802M Prusa i3 Unofficial Support Thread - 9 years ago

The leadscrew Zonestar3D has was pitch 2mm but number of start is 4 that mean its pitch = 4*2 = 8mm so step is 400 Some use the leadscrew that pitch 2mm too but number of start is 1 that mean its pitch = 2*1 = 2mm so step is 1600 The GT2 Pully is 16 tooth so step is 100, Some use GT2 20 tooths so step is 80

by minhtri.sm - Prusa i3 and variants