Step 08.49 — Extruder motor into E MOTOR¶
Step 49 of 65 · Chapter 08 — Toolhead: Stealthburner, Clockwork 2, Revo HF, Nitehawk-SB V2
Parts:
- the pancake stepper lead · already on the bench
Do: The E MOTOR port is a JST-XH2.5 4-pin on the reverse side of the board, pin order B2 B1 A1 A2. Plug the stepper in. This one connector did not change to PH2.0.
Check
Plug fully home in the rear header. Never plug or unplug a stepper with the printer powered: back-EMF kills drivers.
What you're looking at
E MOTOR is the only JST-XH2.5 connector left on this board, and it is on the reverse side. A stepper is a pair of coils: plugging or unplugging one on a live board dumps their stored energy straight back into the driver and kills it.
Source: Nitehawk-SB V2 pinout
