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# Creality Ender 3 Pro # Hardware
## Specs
**BTT SKR Mini E3 V2.0, direct drive, and BL-Touch - Raspberry Pi 4 running Klipper & Fluidd** **BTT SKR Mini E3 V2.0, direct drive, and BL-Touch - Raspberry Pi 4 running Klipper & Fluidd**
I'm collecting information here to track progress on setting up an Ender 3 Pro that I pulled out of the trash. The previous owner had already upgraded the motherboard and completed a changeover to direct drive. The Z-axis was initially bizarrely overtightened, causing MAJOR skipping issues that squished all the prints about 30%. I'm collecting information here to track progress on setting up an Ender 3 Pro that I pulled out of the trash. The previous owner had already upgraded the motherboard and completed a changeover to direct drive. The Z-axis was initially bizarrely overtightened, causing MAJOR skipping issues that squished all the prints about 30%.
@ -12,6 +13,15 @@ After properly torquing the eccenctric nuts on the Z-axis and other belts as wel
Before getting into the printer itself, let's go over how to connect to the Pi, which is running the whole show. Before getting into the printer itself, let's go over how to connect to the Pi, which is running the whole show.
### Built Plates
I have two build plates for this. The stock one from Creality with the crappy magnet on the back that feels like an up-jumped refrigerator sticker, and a fancy-pants PEI sheet.
The PEI sheet doesn't work for shit. It works beautifully on my other printers but on this one I genuinely can't get anything to stick to it. I'm certain it's either a bed leveling or Z offset issue, but the crappy sheet that came with the machine, all scratched to shit, works much, much better.
## Problems?
###Non-functional/detrimental bed meshes
Bed meshes don't seem to work properly. I can get wildly different bed meshes without ever moving or adjusting anything on the machine, leading me to believe that the BL-Touch probe might have some issues (or may not be a genuine part, I'm not certain.) It might be worth looking into something else for Z probing.
# Raspberry Pi 4 # Raspberry Pi 4
**Overview** **Overview**
<pre> <pre>
@ -94,3 +104,7 @@ See the Git for documentation. You probably won't need to do much through this u
### Other ### Other
This is running a Debian-based OS. Because of this, you can update using <code>apt</code> just like on any other system. Everything that is currently installed is actively maintained and should work great through updates. On my other 2 printers running Debian w/ Klipper, updates have gone off without a hitch. This is running a Debian-based OS. Because of this, you can update using <code>apt</code> just like on any other system. Everything that is currently installed is actively maintained and should work great through updates. On my other 2 printers running Debian w/ Klipper, updates have gone off without a hitch.
# Firmware
The printer is running Klipper ([GitHub repo](https://github.com/Klipper3d/klipper)).