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General Mach Discussion / Engraving Spindle.
« on: June 13, 2014, 05:01:01 AM »
Just as a heads up…
Tests have shown that small brushless dc motors (BLDC), more usually used with RC models, (mainly because of their high power to weight / size ratio) can make ideal engraving spindles.
The construction of just one such spindle is detailed here; http://openbuilds.com/builds/890kv-ox-rc-spindle.411/
To facilitate BLDC motor speed control and operation from Mach3 I have now made a simple interface circuit which takes the Mach3 generated PWM signal and converts it to the necessary pulse stream for operation the motor’s ESC and this is detailed here; http://openbuilds.com/builds/software-speed-control-of-a-brushless-dc-bldc-motor-from-mach3.762/
Tweakie.
Tests have shown that small brushless dc motors (BLDC), more usually used with RC models, (mainly because of their high power to weight / size ratio) can make ideal engraving spindles.
The construction of just one such spindle is detailed here; http://openbuilds.com/builds/890kv-ox-rc-spindle.411/
To facilitate BLDC motor speed control and operation from Mach3 I have now made a simple interface circuit which takes the Mach3 generated PWM signal and converts it to the necessary pulse stream for operation the motor’s ESC and this is detailed here; http://openbuilds.com/builds/software-speed-control-of-a-brushless-dc-bldc-motor-from-mach3.762/
Tweakie.