Creality Ender 3 Mainboard 4.2.2 32-bit

Description

This is the stock 4.2.2 mainboard pulled from an Ender 3 manufactured in May 2021. It uses the 32-bit ARM STM32F103RET6 microcontroller, and (to the best of my knowledge) HR4988 stepper drivers. This board does not have the silent drivers seen in upgraded models; these are standard stepper drivers.
This board is currently flashed with the stock Ender 3 firmware, but like all 4.x boards, it comes with a bootloader installed, so if you have a different printer you want to install this mainboard on (Ender 3 Pro, Ender 5, etc.) you can download the respective firmware for your printer from Creality. To flash the firmware, just place the .bin file in the root directory of your MicroSD card, insert the card into the printer, and boot it. The bootloader will flash the firmware automatically. However, i
f you have a completely stock Ender 3 (non-Pro, non-V2), this should be a drop-in replacement; no firmware flashing required.
I tested this board with a couple of test prints to make sure it worked, but it's otherwise basically brand new. Let me know if you have any questions!