using a servo with dual extruder
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have you read this on how to connect external stepper motors?
https://duet3d.dozuki.com/Wiki/Using_external_stepper_motor_drivers
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I need it for a servo not a stepper plus I've used all the stepper outputs for this board anyway. that's the main reason I want to use a servo there are servo outputs but i don't want to damage the board with back emfs and i don't know how to configure the gcode script as the is really much on the subject that i can find.
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maybes i could use a extra stepper instead with what you suggested. its just that a servo is smaller and probably lighter. thanks for thee suggestion
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you connect a servo like you connect a bltouch.
the red, orange, black wires are like a servo.
then you define the servo
like (rrf3)
M950 S0 C"exp.heater3"and send angle commands like
M280 P0 S10
but looking at this
https://www.youtube.com/watch?v=km-_uMzVg18
the current for a strong servo will exceed the 5v line on the duet. -
I wonder if I just use the signal line from the duet and have a external 5v source it would help solve this problem
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this is what e3d is using for their tool changer
https://e3d-online.dozuki.com/Document/rHGYlVFPjvVugPyy/Toolchanger-ToolHead-Stepper-M.pdf
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I reckon this is a much more viable alternative to a servo. ill probably go with this and use a external driver instead. i don't suppose you know the gcode for using the external driver to help change the tool or how you would go about. if i had e3d tool changer config it would be nice see what they did to get it to work. thanks again you have been allot of help.
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@foster1111 said in using a servo with dual extruder:
i don't suppose you know the gcode for using the external driver to help change the tool or how you would go about
see
https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwareCartesianPrinter#Section_Tool_change_files -
thanks for your help its been greatly appreciated.
