How to increase extruder and bed temps  

Re: How to increase extruder and bed temps

Hi Jim,

I believe that Thermistors become unreliable at higher temperatures, and people wanting to print high temperature filaments, use a PT100 thermocouple instead of a thermistor. I belivethe thermocouple needs an amplifier board to interface to the Mk3 Einsy. and as you say the top temperature is set in firmware.

you will need to adjust the firmware to use the thermocouple and the high temperature!, you should be able to search on the forum for information

regards Joan

Re: How to increase extruder and bed temps

from prusa website

Max hotend/heatbed temp. 300 °C / 120 °C (572 °F / 248 °F)

one would think at least it should be able to hit 300.

Re: How to increase extruder and bed temps

Hi Jim,

I believe that Thermistors become unreliable at higher temperatures, and people wanting to print high temperature filaments, use a PT100 thermocouple instead of a thermistor. I belivethe thermocouple needs an amplifier board to interface to the Mk3 Einsy. and as you say the top temperature is set in firmware.

you will need to adjust the firmware to use the thermocouple and the high temperature!, you should be able to search on the forum for information

regards Joan

That is what I was planning on. I do have an E3D PT100 with amp, an E3D plated copper block, and just ordered one of the new 'Hardened' Olsson ruby nozzles. All good up to 500 C. Prusa also has the PT100 in their firmware as an option.

When I try to compile to compile using Arduino 1.8.7 it asks "Is this an Arduino Mega or Mega 2560" board. Does anyone know if it is or is it something else?

Jim

Re: How to increase extruder and bed temps

Sorry Jim.

I haven't compiled the firmware personally.

I believe there is a thread about using Stock Marlin firmware, which may have help on compilation.

regards Joan

Re: How to increase extruder and bed temps

Sorry Jim.

I haven't compiled the firmware personally.

I believe there is a thread about using Stock Marlin firmware, which may have help on compilation.

regards Joan

Tiago.c mentioned this link https://github.com/prusa3d/Prusa-Firmware in another section. I am still having trouble compiling it though.

Re: How to increase extruder and bed temps

Hopefully someone will wander past and offer help. Regards Joan

Re: How to increase extruder and bed temps

Hi Jim,

I believe that Thermistors become unreliable at higher temperatures, and people wanting to print high temperature filaments, use a PT100 thermocouple instead of a thermistor. I belivethe thermocouple needs an amplifier board to interface to the Mk3 Einsy. and as you say the top temperature is set in firmware.

you will need to adjust the firmware to use the thermocouple and the high temperature!, you should be able to search on the forum for information

regards Joan

That is what I was planning on. I do have an E3D PT100 with amp, an E3D plated copper block, and just ordered one of the new 'Hardened' Olsson ruby nozzles. All good up to 500 C. Prusa also has the PT100 in their firmware as an option.

When I try to compile to compile using Arduino 1.8.7 it asks "Is this an Arduino Mega or Mega 2560" board. Does anyone know if it is or is it something else?

Jim

Einsy rambo has arduino mega 2560 in it. But you would have little to compile firmware for RAMBO board, according to firmware.

1. Development environment preparation
install "Arduino Software IDE" for your preferred operating system
https://www.arduino.cc -> Software->Downloads
it is strongly recommended to use older version "1.6.9", by which we can assure correct compilation results
note: in versions 1.7.x and 1.8.x there are known some C/C++ compilator disasters, which disallow correct source code compilation (you can obtain "... internal compiler error: in extract_insn, at ..." error message, for example); we are not able to affect this situation afraid
note: in the case of persistent compilation problems, check the version of the currently used C/C++ compiler (GCC) - should be 4.8.1; version can be verified by entering the command
avr-gcc --version
if you are not sure where the file is placed (depends on how "Arduino Software IDE" was installed), you can use the search feature within the file system
note: name collision for "LiquidCrystal" library known from previous versions is now obsolete (so there is no need to delete or rename original file/-s)

add (UltiMachine) RAMBo board into the list of Arduino target boards
File->Preferences->Settings
into text field "Additional Boards Manager URLs"
type location
" https://raw.githubusercontent.com/ultimachine/ArduinoAddons/master/package_ultimachine_index.json "
or you can 'manually' modify the item
"boardsmanager.additional.urls=....."
at the file "preferences.txt" (this parameter allows you to write a comma-separated list of addresses)
note: you can find location of this file on your disk by following way:
File->Preferences->Settings ("More preferences can be edited in file ...")
than do it
Tools->Board->BoardsManager
from viewed list select an item "RAMBo" (will probably be labeled as "RepRap Arduino-compatible Mother Board (RAMBo) by UltiMachine"
note: select this item for any variant of board used in printers 'Prusa i3 MKx', that is for RAMBo-mini x.y and EINSy x.y to
'clicking' the item will display the installation button; select choice "1.0.1" from the list(last known version as of the date of issue of this document)
(after installation, the item is labeled as "INSTALLED" and can then be used for target board selection)

modify platform.txt to enable float printf support: "compiler.c.elf.flags=-w -Os -Wl,-u,vfprintf -lprintf_flt -lm -Wl,--gc-sections"

2. Source code compilation
place the source codes corresponding to your printer model obtained from the repository into the selected directory on your disk
https://github.com/prusa3d/Prusa-Firmware/
in the subdirectory "Firmware/variants/" select the configuration file (.h) corresponding to your printer model, make copy named "Configuration_prusa.h" (or make simple renaming) and copy them into "Firmware/" directory

run "Arduino IDE"; select the file "Firmware.ino" from the subdirectory "Firmware/" at the location, where you placed the source codes
File->Open
make the desired code customizations; all changes are on your own risk!

select the target board "RAMBo"
Tools->Board->RAMBo
note: it is not possible to use any of the variants "Arduino Mega …", even though it is the same MCU

run the compilation
Sketch->Verify/Compile

upload the result code into the connected printer
Sketch->Upload

or you can also save the output code to the file (in so called HEX-format) "Firmware.ino.rambo.hex":
Sketch->ExportCompiledBinary
and then upload it to the printer using the program "FirmwareUpdater"
note: this file is created in the directory "Firmware/"