Need help with a ramps 1.4 install

Mostly Printed CNC - MPCNC Troubleshooting
1

good morning all,

its been a few years since I posted. so my troubleshooting skills are almost nill

so I am trying to put together a ramps 1.4 on a MPCNC Primo.

I have the Ramps board, Flashed, and all hooked up with a motor on X.

however, when I go to Motion-> Move Axis → Move x → move 10mm and move the control uup or down, the motor doesnt turn.

I grabbed the latest Firmware:
https://github.com/V1EngineeringInc/MarlinBuilder/releases/download/510/V1CNC_Ramps-2.0.7.2-src.zip

I have updated the configuration.h to:
#define X_DRIVER_TYPE A4988
#define Y_DRIVER_TYPE A4988
#define Z_DRIVER_TYPE A4988
#define X2_DRIVER_TYPE A4988
#define Y2_DRIVER_TYPE A4988
#define Z2_DRIVER_TYPE A4988
//#define Z3_DRIVER_TYPE DRV8825
//#define Z4_DRIVER_TYPE A4988
#define E0_DRIVER_TYPE A4988
#define E1_DRIVER_TYPE A4988
//#define E2_DRIVER_TYPE DRV8825
//#define E3_DRIVER_TYPE DRV8825
//#define E4_DRIVER_TYPE DRV8825
//#define E5_DRIVER_TYPE DRV8825
//#define E6_DRIVER_TYPE A4988
//#define E7_DRIVER_TYPE A4988

because I am using A4988 drivers from an old board I have laying around.

and no movement.

I am using a 12v 6amp PS.

I do not feel the motor engerdised.

I am not sure what to do next.

advise and help is appreciated.

2

I would check and make sure the drivers are oriented the way they are in this picture. Also make sure your 12V is connected to the power pins closest to the board edge on the 4-pin connector. The other set is just for the bed heater when used for 3D printing.

Ramps1-4
Ramps1-44032×2268 1.73 MB

1 Like
3

If you haven’t already, I’d focus on the drivers first:

  • Make sure the drivers are installed in the correct orientation
  • Make sure the current is set correctly on the drivers
  • Swap a drivers, so you have a different driver for X
1 Like
4

yup sadly I had the power plugged into the Mega board.

once I fixed that, all started working

much appreciated.

2 Likes