Large OX CNC belt driven laser cutter
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@jgrouse said in Large OX CNC belt driven laser cutter:
I'm also looking into driving the laser with an actual analogue signal rather than PWM which just blasts the laser a max power in varying pulses. The I2C MCP4725 DAC is a 10bit digital to analogue chip which can be sent M260 I2C commands to set the output voltage. Since I've written my own app to turn grey scale images to GCode I'll modify it to set the power before each G1.
Does the laser controller accept an analog input? If it accepts both analog and PWM through the same input, it may be just smoothing the PWM.
Have you calculated whether the latency of the I2C transactions will be low enough?
