How to Upload Marlin Firmware Cr 10

How to Upload Marlin Firmware Cr 10

How to Upgrade Marlin Firmware – A Complete Guide

How to Upload Marlin Firmware Cr 10

With a unproblematic firmware upgrade, you become an of import safety net and boosted features for gratuitous.

This article is a stride-past-step guide on using an


UNO to burn a bootloader on your printer lath and upgrade the Marlin firmware on your 3D printer. Nosotros volition be using
Creality Ender three
for this tutorial, and y’all can also utilise this aforementioned method on other compatible 3D printers.

What is Firmware?

Firmware is software that controls a slice of hardware.
Marlin is the firmware used on most 3D printers and it’s based on a previous firmware called Sprinter.
In that location have been several versions of Marlin released since its inception. Most manufacturers fork their firmware from the original Marlin firmware source lawmaking.

What is Forking?

Forking means when a programmer takes a source code from one software parcel and starts independently developing it. This results in a dissever slice of software for the target device. For instance, Creality’due south


Ender 3
printers run a forked version of Marlin firmware.

Marlin source lawmaking, modified to suit the printers, is the base for this firmware.

This means that the forked firmware will no longer benefit from any additional features and safety updates institute in afterward versions like Marlin1.1.7 and ane.1.9. Adding safety is the virtually crucial reason for updating firmware. Creality has made the Ender three completely open-source. Physical files and the version of Marlin firmware are now open up to the public. If you browse through it, yous’ll run into that it’southward out of date and doesn’t include essential condom features like Thermal runaway protection.

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Why is Thermal runaway protection important?

Imagine the state of affairs where on a long print, your thermistor and heater cartridge comes loose. The printer can’t register the temperature but keeps on pumping in voltage to the heater. This is a potential burn run a risk. Thermal delinquent protection aims to monitor this and shut things downwards if needed. The other reason to upgrade the firmware is to permit y’all to do more advanced modifications, like different hot ends with different thermistors, auto bed leveling with a BL-Touch on module and Arc support. Nosotros’ll need a vital component called the Bootloader earlier we update the firmware.

What is a Bootloader?

A Bootloader is a small piece of firmware code that allows yous to update the printer board firmware with your USB cable. It runs on your main board’s processor every fourth dimension you start your 3D printer. If your 3D printer board doesn’t have a bootloader, and you try to upload the firmware using a USB cable, you’re going to become an mistake well-nigh information technology not syncing. Budget 3D printers apply viii-bit boards, which have a limited corporeality of memory. This is why manufacturers practise not ship boards with bootloaders pre-installed on low-cost 3D printers. The general idea is that if your printer has an 8-bit chip like ATmega1284p, you’re going to need a bootloader. You tin directly download the latest firmware from Marlin’due south official website, but that process requires a lot of technical know-how and prior preparations. Instead, yous tin use the TH3D Unified ane firmware, which is very easy to work on and comes with the required libraries pre-installed. If you upgrade to this firmware, y’all’ll instantly get thermal runaway protection and like shooting fish in a barrel support of more advanced upgrades.

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Tools yous’ll need:

  • A hex key (To remove the electronics encompass) – 1x
  • Jumper wires (For UNO) – 1x Male to Female and 5x Female to Female person
  • Arduino UNO (To burn the bootloader onto your board) – 1x
  • USB-A to USB-B connector cable (For UNO) – 1x
  • USB cable (Which connects to your printer) – 1x


  1. Go to TH3D’s page for Unified 1 firmware (click hither).
    Click on the highlighted link to download the .zip file.
  2. Download the full .zip file package.
  3. Unzip it and open the Windows Batch File, “OpenFirmwareWindows”. It’ll open a particularly prepared version of
    Arduino IDE.

    After unzipping, open this batch file.
  4. Select the “Configuration.h” tab, which contains all the custom code which nosotros can modify. (Note: The next steps must be followed just if your printer does not have a bootloader. You tin cheque online if your printer has a bootloader or not. Skip to stride 15 otherwise.)

    Steps for burning a bootloader:

  5. Utilise the hex key to accept the screws off the electronics comprehend of your 3D printer. Be aware that the fan is attached to the comprehend when you remove it, and so take care when treatment it.
  6. Plugin your UNO to the estimator and place it well-nigh the motherboard so that the USB slot is facing the printer.
  7. Now in the Arduino IDE, go to File → Examples → xi.ArduinoISP → Select “ArduinoISP”. This opens a new IDE window, containing the ArduinoISP sketch.

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Follow these steps to open an ArduinoISP sketch.
  • In this window, Go to Tools→ Board → Select “Arduino UNO”. Because your UNO is plugged into the figurer, there will be 1 COM port selected.
  • Simply click the upload button on the IDE, and now your UNO is set as a programmer.
  • Connect the UNO to the motherboard using the jumper wires. Match the ISCP headers on UNO and the Printer board by using the 5x Female person to Female jumpers. Use the 1x Male person to Female person jumper to connect the pin10 of UNO and the meridian right pin of the ISCP on the printer motherboard. Refer to these color-coded circles:
    A color-coded representation of the circuit connections. (Pic taken from Teaching tech’s video)
  • Later wiring up, in the ArduinoISP window, go to Tools → Boards → Select “Sanguino 1284p”. Below the lath selector, make certain the processor is ATmega1284p (16MHz). In the same Tools menu, get to Programmer → Select “Arduino as Internet access provider”.
  • Finally, select “Burn Bootloader” in the Tools bill of fare. A bulletin will appear after some time saying “Done burning bootloader”.
    Brun the bootloader onto your Printer motherboard.
  • Disconnect the UNO and remove all the wirings. You lot’ve successfully burned a bootloader onto your motherboard.
  • Close the Arduino Internet service provider window.

    Steps for flashing the firmware onto your 3D printer:

  • Direct connect your 3D printer to your reckoner with a USB cable.
  • Now, in the TH3D “configuration.h” tab, go to Tools → Programmer → Select “AVRISP mkII”.
  • Check if the COM port is fix upwardly. Due to the directly connexion to the printer, the COM port might be different.
    Make sure that any COM port is selected.
  • Gyre downwardly in the “configuration. h” file,  till you find your printer. Select the particular model by united nations-commenting that line. But delete the “//” to un-comment. For example: For Ender three, on the 366th line, un-comment  “//#define ENDER3” → “#define ENDER3”.
  • Curlicue down far enough till the 1020th line, or press Ctrl+F and search “Misc”. Hither, you can change ii notable things. Equally the new firmware flashes, it’ll alter the loading screen on your printer. If you lot prefer something else, and so uncomment, “//#define TM3D_BOOT” → “#define TM3D_BOOT”. You can also change the printer proper name. United nations-comment “#ascertain USER_PRINTER_NAME” and in the quotation marks next to it, type in your desired name.
    Various kicking screen settings tin can be changed by United nations-commenting.
  • Finally, click the Upload push on the IDE. If it all goes well, it’ll show a message “Done uploading”. You’ve successfully updated your printer firmware.
  • For more information visit –

    Teaching Tech’s video guide


    How to Upload Marlin Firmware Cr 10

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