Setup and Calibration

After the firmware installation, the following setup and calibration procedure is recommended. Most of the work can be done easiest using Pronterface and a USB cable connecting your PC

Adjust BLTouch Z-Offset

• Manually level your hotbed as before installing the BLTouch probe to minimize the amount of required software compensation
• For the start, set the Z-Offset to a larger value than assumed to keep the nozzle safely away from the hotbed:
  With the original Creality Bracket, an initial value of -2.00 mm worked fine for me
  For this go to Prepare - Z-Offset - Z-Offset and dial in the initial value
• Home all axes with Prepare - Home All
• Activate live adjustment: Prepare - Z-Offset - Live Adjustment
• If your nozzle is visibly above the board, directly adjust the Z-Offset in the menu
• Once you are quite close put a piece of paper under the nozzle and use Microstep down / Microstep up until finished
• Disable Live Adjustment

Smith3D also has got some helpful instructions on this here

Create initial Bed Leveling Mesh

• From the main menu: Level - Create Mesh
• Wait until probing process has finished and confirm storage of new mesh
• Check on Mesh Viewer if the bed appears to be level
• If not, manually re-adjust the bed and repeat the probing process

PID Autotune Extruder

Let Marlin autotune the PID control parameters for the Extruder using Pronterface

• First, list the current parameters with M301 command
• Switch on part cooling fan with M106 S255 command
• Run PID autotune with M303 E0 S210 C8 U1 command
• Store settings with M500 command
• Switch off part cooling fan with M106 S0 command

PID Autotune Printing Bed

Let Marlin autotune the PID control parameters for the printing bed using Pronterface

• First, list the current parameters with M304 command
• Run PID autotune with M303 E-1 S65 C8 U1 command
• Store settings with M500 command

Adjust Extruder E-Steps

Adjust the extruder e-steps following the process described by Teaching Tech here

• List the current E-steps settings with the M92 command
• Set the E-steps with the M92 E100 replacing 100 with the value determined earlier
• Store settings with M500 command