So you want to run Klipper on your BIQU BX? Well too bad it's not supported.... but I do have some good news. I have a preliminary branch ready to submit to Klipper to support the BIQU BX. Here's what you need to know in order to get started.
NOTE: If you have a V3 board, click here
_**UPDATE: The Biqu BX is now supported in mainstream klipper!
NOTE: CAN will not work on this board due to a hardware mis-configuration
NOTE: I2C is not quite working yet!
If you decide to go ahead and install any of the custom firmware branches on your BX then you must read this guide before using it as it has been carefully written to cover the most common questions that users of the firmware have.
If you ask a question in the facebook group that is covered in this guide I'm going to scowl at you through my monitor and with three mighty waves of my finger declare "tsk, tsk, tsk".
This guide has been written to supplement the information within the main readme under the "Using the firmware on the BX" heading over here: https://github.com/looxonline/Marlin. Please make sure that you read both as they are equally important.
Congratulations on becoming a BX owner. You have in your posession one of the most capable 3D printers in its class with some unique features that you will not even find on other, more costly machines.
Despite the capabilities of the machine, it will only be able to perform well if you take the time to carefully ensure that the mechanics are well put together. Fortunately the BX is a very simple machine to assemble so if you follow this guide carefully you will not have any problems.
The BX comes with the frame already pre-assembled. All you will need to do is align it with the base and insert four bolts to hold it in place. Unfortunately the process involved in trimming the aluminium extrusions to length at the factory does not always result in a perfect, 90 degree cut. This means that after you fasten the uprights in place they may not be at 90 degrees to the base.