Pins don't align with #define statements

[ccwtruck]

I am attempting to install GRBL-Mega 1.1g (the current release) on an ATmega2560R3, and try as i might, I get no motion on Y & Z axis. According to the cpu_map.h, I have the stepper drivers connected properly:
`#define X_STEP_BIT 2 // MEGA2560 Digital Pin 24
#define Y_STEP_BIT 3 // MEGA2560 Digital Pin 25
#define Z_STEP_BIT 4 // MEGA2560 Digital Pin 26

// Define step direction output pins. NOTE: All direction pins must be on the same port.
#define X_DIRECTION_BIT 7 // MEGA2560 Digital Pin 30
#define Y_DIRECTION_BIT 6 // MEGA2560 Digital Pin 31
#define Z_DIRECTION_BIT 5 // MEGA2560 Digital Pin 32
`
I have flashed with your .hex file several times, and compiled/ uploaded from source several times -- still, the Y and Z axis's show no sign of life.
This is on a CNC plasma table that worked well on the Uno with v1.1h.
I have double, triple & quadruple-checked my wiring -- it is correct; after all, i'm just upgrading the system board, and not re-wiring any more than that requires.
Please, can you tell me exactly which physical pins do my stepper controllers need to connect to?
Thank you in advance for any assistance!!!

[fra589]

Hi @ccwtruck

Perhaps this doc: https://github.com/fra589/grbl-Mega-5X/wiki/Pinout-mapping-in-cpu_map.h will help you to find which pins are used...

@++;
Gauthier.

[ccwtruck]

Thank you for that; I've at least verified that my steppers are connected to the right pins. I am now wondering if my Y & Z steppers have taken a dump. They still light up, but with the connections being correct, that's the next logical link in the chain.