Differences
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Both sides previous revision Previous revision | |||
spindle-module [2018/07/09 17:58] 51.9.105.125 [Basics] |
spindle-module [2019/05/06 18:52] (current) 89.134.146.217 [PWM Spindle] added hobby ESC block - V1pr |
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<callout type="info" icon="true"> | <callout type="info" icon="true"> | ||
Check the [[http://smoothieware.org/pinout |pinout]] to verify if a pin is capable for a certain functionality! | Check the [[http://smoothieware.org/pinout |pinout]] to verify if a pin is capable for a certain functionality! | ||
+ | </callout> | ||
+ | |||
+ | <callout type="info" icon="true" title="Hobby servo ESC as spindle control"> | ||
+ | Since I'm expiriencing with hobby esc+motor combos (1:8 scale 3 phase 4068 like motor) I wanted to share it's config. ESCs act like hobby servos - 20 ms period time, 1.5-2ms duty cycle time -, so insted of having modified the spindle code, I've created a switch for commands M3/M5. Due to the very small duty cycle window you won't have much control over the motor: S7.5 is neutral, S12.5 is "fastest" after calibrating the ESC manually with bCNC (read ESC's manual; below S7.5 is breaking for now). | ||
+ | |||
+ | The following code is working, setting neutral upon boot - ESC init. | ||
+ | <code> | ||
+ | switch.servo.enable true # Servo module for PWM control | ||
+ | switch.servo.input_on_command M3 | ||
+ | switch.servo.input_off_command M5 | ||
+ | switch.servo.output_pin 1.23o! # spare pin with PWM capability, 3.25 should also work from EXP2, maybe needed to set it to 1.23o! | ||
+ | switch.servo.output_type hwpwm | ||
+ | #switch.servo.pwm_period_ms 20 #set PWM period to 20ms (50 Hz) | ||
+ | switch.servo.startup_state true # turn on the output to have neutral for ESC | ||
+ | switch.servo.startup_value 7.5 # this is default_off_value | ||
+ | switch.servo.default_on_value 7.5 | ||
+ | switch.servo.failsafe_set_to 0 | ||
+ | </code> | ||
+ | |||
</callout> | </callout> | ||