Additional hardware:
Best way I found to use new BTT board with existing power supply is to utilize klipper and use BTT board as an auxilery board. I use the BTT board for the quite steppers and non-pt100 thermister.
Note: If you want to use a single power supply for both boards you will need to tap in to power traces from PCB which may not be safe.
Note: If you want to use a controllable heat sink fan you will need a 24V fan connected to BTT board instead of the 5V Ultimaker board fan.
Steps:
The author marked this model as their own original creation.