Trying to figure out where to connect my spindle to SKR 1.4 Turbo. I managed to compile by using the generic solution on marlinfw.org:
#define SPINDLE_LASER_PWM_PIN 6 // Hardware PWM laser TTL input #define SPINDLE_LASER_ENA_PIN 4 // CO2 PSU enable input
but I can’t figure out where to actually connect the physical wires now? And does this mean I don’t need a separate PWM controller now, just the two wires from the spindle can go directly to the board, right? I also have a laser I’d like to use occasionally but I’m not sure how to enable both in the firmware since it makes you choose one or the other.
I checked all the hotend, heater, and fan ports on the board with a meter and couldn’t see any change when I turn on the spindle from TFT so I’m totally lost and could use some help. I haven’t really messed with my MPCNC or my printer firmware in almost a year so I’ve forgotten a lot of what I’d learned.