spindle-module [Smoothieware]

Differences

This shows you the differences between two versions of the page.

--- 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
@@ Line 52: / Line 52: @@
 <callout type="info" icon="true">
 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>