1. Engine Configuration… Ports & Pins – Motor Outputs

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2. Engine Configuration… Ports & Pins – Spindle Setup

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IMPORTANT! You need to set PWM Base Freq between 5 000 and 10 000 Hz. Setting lower frequency value (e.g. 1000 Hz, 10% duty) is incorrect because a laser is turned on at maximum power only by 0.1 millisecond and turned off by 0.9 millisecond. As a result, the power of the laser isn’t averaged and cutting (engraving) line is dotted with long pauses especially if engraving speed is high.

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If you set higher base frequency, for example, 10 000 Hz and the same duty, the laser is turned on at maximum power 10 times per 1 millisecond. As a result, the power of the laser is averaged and cutting (engraving) line is homogenous.

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3. Pulley Selection

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4. Motor Tuning and Setup

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You can connect pin number 6 of the breakout board (or another, if you set them) directly to the TTL input of the laser head. After these, you can enter a spindle speed between 500 and 10.000 and Mach will control the laser as a spindle. The spindle speed will adjust the laser power.