#define USE_CONTROLLER_FAN

Software / Firmware General
1

Using Ramps 1.4 and Dual Endstop firmware

I would like to get the #define USE_CONTROLLER_FAN function working to drive a fan when the steppers are enabled to cool the drivers.

My aim is to connect the fan to D9 connection as this is controlled by MOSFET and I wont need a breakout board as I would if using an aux pin.

This would lead me to make the following declaration in config file:
#define CONTROLLER_FAN_PIN 9

However, this as this is pin is defined as “FAN_PIN” the compiler fails as the sanity check calls out the conflict.

Has anybody else successfully implemented the Controller Fan functionality without additional breakout boards?

2

You can move the fan pin to another pin. On ramps, you can set it to 70 and it will go to an unused pin.

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