Hello and Help - I3 MK3 Clone

Hello, new to these forums but have been watching videos on 3D printers for years now and always wanted to build on. Over the last year I've been gathering parts together to make my own I3 MK3 clone after watching Thomas Sanladerer's I3 Dolly videos.

As things had moved on since he made the videos I decided to try and make an MK3 clone complete with MK52 heated bed, 24V power supply, Pinda2 clone probe and a cloned Einsy Rambo board all bought through Amazon or Ali Express.

The good news is, it didn’t blow up when I turned it on! The bad news is, I can seem to flash the board with Prusa firmware and the LCD screen doesn’t display but occasionally makes some beeping sounds. I keep getting errors through PrusaSlicer... not being too familiar with the software/firmware side of things I would appreciate any help or being pointed in the right direct to try and get this pile of parts printing :)

The below is pretty much what I am getting.


avrdude-slic3r -v -p atmega2560 -c wiring -P COM3 -b 115200 -D -U flash:w:0:C:\Users\Mark\Downloads\prusa3d_fw_MK3_3 _9_1_3518.hex:i
avrdude-slic3r: Version 6.3-20160220-prusa3d, compiled on Mar 21 2020 at 12:45:57
Copyright © 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright © 2007-2014 Joerg Wunsch
Using Port : COM3
Using Programmer : wiring
Overriding Baud Rate : 115200
AVR Part : ATmega2560
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PA0
RESET disposition : dedicated
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :

Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 10 8 0 no 4096 8 0 9000 9000 0x00 0x00
flash 65 10 256 0 yes 262144 256 1024 4500 4500 0x00 0x00
lfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
efuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
lock 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00

Programmer Type : Wiring
Description : Wiring
Programmer Model: AVRISP
Hardware Version: 15
Firmware Version Master : 2.10
Vtarget : 0.0 V
SCK period : 0.1 us
avrdude-slic3r: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.01s
avrdude-slic3r: Device signature = 0x1e9801 (probably m2560)
avrdude-slic3r: safemode: hfuse reads as D8
avrdude-slic3r: safemode: efuse reads as FD
avrdude-slic3r: reading input file “C:\Users\Mark\Downloads\prusa3d_fw_MK3_3_9_1_35 18.hex”
avrdude-slic3r: writing flash (247804 bytes):
Writing | ################################################## | 100% 43.73s
avrdude-slic3r: 247804 bytes of flash written
avrdude-slic3r: verifying flash memory against C:\Users\Mark\Downloads\prusa3d_fw_MK3_3_9_1_3518. hex:
avrdude-slic3r: load data flash data from input file C:\Users\Mark\Downloads\prusa3d_fw_MK3_3_9_1_3518. hex:
avrdude-slic3r: input file C:\Users\Mark\Downloads\prusa3d_fw_MK3_3_9_1_3518. hex contains 247804 bytes
avrdude-slic3r: reading on-chip flash data:
Reading | ################################################## | 100% 31.72s
avrdude-slic3r: verifying …
avrdude-slic3r: 247804 bytes of flash verified
avrdude-slic3r: safemode: hfuse reads as D8
avrdude-slic3r: safemode: efuse reads as FD
avrdude-slic3r: safemode: Fuses OK (E:FD, H:D8, L:FF)
avrdude-slic3r done. Thank you.
avrdude-slic3r -v -p atmega2560 -c arduino -P COM3 -b 115200 -D -u -U flash:w:1:C:\Users\Mark\Downloads\prusa3d_fw_MK3_3 _9_1_3518.hex:i
avrdude-slic3r: Version 6.3-20160220-prusa3d, compiled on Mar 21 2020 at 12:45:57
Copyright © 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright © 2007-2014 Joerg Wunsch
Using Port : COM3
Using Programmer : arduino
Overriding Baud Rate : 115200
AVR Part : ATmega2560
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PA0
RESET disposition : dedicated
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :

Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 10 8 0 no 4096 8 0 9000 9000 0x00 0x00
flash 65 10 256 0 yes 262144 256 1024 4500 4500 0x00 0x00
lfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
efuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
lock 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00

Programmer Type : Arduino
Description : Arduino
Hardware Version: 3
Firmware Version: 6.2
Vtarget : 0.3 V
Varef : 0.3 V
Oscillator : 28.800 kHz
SCK period : 3.3 us
avrdude-slic3r: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.00s
avrdude-slic3r: Device signature = 0x1e9801 (probably m2560)
avrdude-slic3r: reading input file “C:\Users\Mark\Downloads\prusa3d_fw_MK3_3_9_1_35 18.hex”
avrdude-slic3r: writing flash (65132 bytes):
Writing | ################################################## | 100% 7.66s
avrdude-slic3r: 65132 bytes of flash written
avrdude-slic3r: verifying flash memory against C:\Users\Mark\Downloads\prusa3d_fw_MK3_3_9_1_3518. hex:
avrdude-slic3r: load data flash data from input file C:\Users\Mark\Downloads\prusa3d_fw_MK3_3_9_1_3518. hex:
avrdude-slic3r: input file C:\Users\Mark\Downloads\prusa3d_fw_MK3_3_9_1_3518. hex contains 65132 bytes
avrdude-slic3r: reading on-chip flash data:
Reading | #################################################a vrdude-slic3r: stk500_loadaddr(): (a) protocol error, expect=0x14, resp=0x11
avrdude-slic3r: stk500_paged_load(): (a) protocol error, expect=0x14, resp=0x73
avrdude-slic3r: stk500_cmd(): programmer is out of sync
avr_read(): error reading address 0x0000
read operation not supported for memory “flash”
avrdude-slic3r: failed to read all of flash memory, rc=-2
avrdude-slic3r: stk500_disable(): protocol error, expect=0x14, resp=0x61
avrdude-slic3r done. Thank you.

I will admit to knowing almost nopthing about firmware setup - but looking at the board: Atmega2560 and Atmega32u2
could it be you need to use the 32bit atmega32u2 rather than the 8bit atmega 2560 ?

Also with firmware setups I'e found the trickiest bit is getting the bloody thing to recognise the screen. You generally need to download a specific library to ide and tell it precisely which screen you are using.

If it's neither of those - then I got nothing :-)