hi guy , i am newbie and i begin study about cnc shield v3 but i do not know how to cool down stepper motor when it is not working , it makes stepper motor not hot , i found that coolEn pin on Cnc shield v3 but how to use it?
Who know about it show me please , thank you
Disable the stepper driver or set the current on the stepper driver down so it doesn't get hot.
That is how the "Turn on coolant." and "Turn off coolant." commands in GCode will turn the coolant pump on and off. You can use it if you want to liquid-cool your steppers, but usually it is used to spray coolant on your cutting tool.
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i use A4988 with expansion board ( above picture ) , i found that when i connect a digital pin with En pin and use code "digitalWrite(en, HIGH)" , it make stepper motor cooler when it not working , so with cnc shield V3, i can use above code ?
how to disable step driver ?
thank you
The CNC Shield V3 pinout that I found says Pin 8 is the "en" pin and it is Active Low. Set Pin 8 to HIGH to disable the steppers.
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Great , thank so much
Stepper motors are designed to run hot -- too hot to touch is OK. However, if the point is to save power, you can certainly disable the motor outputs on the driver.
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If your stepper motor is holding something in place so it doesn't move, it is working and it will get hot. The more it is holding still, the hotter it will get.
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