I’ve previously covered updating to the TH3D version of Marlin on the Ender 3, this time we install vanilla Marlin 1.1.9 on an Ender 3 Pro. ‘Vanilla’ means that we are using the original, main branch of the firmware, instead of one modified by a 3D printer manufacturer or third party such as TH3D.
Updating will enable thermal runaway protection, an essential safety mod, as well as some niceties like babystepping. Using vanilla Marlin will also streamline the install of a BLtouch later on (I will be remaking my previous guide). Power loss recovery is an optional feature covered in this video as well.
As the video mentions, you will still need to burn a bootloader to do this. The link to this video is below. The firmware for the Ender 3 and Ender 3 Pro is identical minus the word ‘pro’ appearing on the main status screen.
Thanks to Stephen Kirby for advising the best way to open the electronics cover.
Marlin Firmware: http://marlinfw.org/
Sanguino Board: https://github.com/Lauszus/Sanguino
Burning a bootloader guide: https://www.youtube.com/watch?v=fIl5X2ffdyo
TinyAVR hookup guide: https://learn.sparkfun.com/tutorials/tiny-avr-programmer-hookup-guide
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