Check if your $32 setting is correct and ensure the TTL wire is on the correct pin. If you need more specific help, I can guide you through: The exact jumper settings for your specific stepper drivers A step-by-step guide for configuring LaserGRBL How to wire limit switches to prevent crashes
: A visual pinout guide for stepper motors (X, Y1, Y2, Z) and auxiliary ports is available on Are you setting this up for a laser engraver CNC router , and do you need help with the specific GRBL configuration MKS DLC32 V2 Wiring Manual - Solo Motor Controllers makerbase mks dlc v21 manual link
A: Section 4.2 recommends active cooling. The “Controller Fan” port (FAN2) can be set to turn on when the stepper driver temperature exceeds 50°C. No heatsink is included; you must add one. Check if your $32 setting is correct and