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- Mar 27, 2015
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Hey guys,
I'll soon be purchasing a laser + X-Drive combination from our resident DTR. I asked him this same question, and was sent to ask over here, so I'll go ahead and do so.
I'm in the process of building a CNC machine via Arduino+GRBL. My primary tool for the machine will be a laser diode, which will be powered by one of DTR's X-Drives. The thing is, I would very much prefer the ability to power the laser on/off, in a TTL-style way, via GRBL's PWM support. To do this, my plan is to wire a MOSFET (likely an IRF3025) between the power source and the X-Drive, the gate being wired to the PWM pin. I would also have something like a 1N5408 (it is a 2.4A driver, after all) on the driver leads for extra protection. The setup would be nearly identical to this (clearly not driving a motor..): http://bildr.org/blog/wp-content/uploads/2012/03/rfp30n06le-arduino-solenoid.png
My question is what I should expect from this setup. For example, would the driver (or diode, more importantly) potentially suffer in any way from being constantly supplied with/deprived of power in this specific manor, be it slowly or rapidly (think PWM-based Raster-engraving)?
Any help, be it advice or alternative suggestions to any part of the design, would be greatly appreciated!
(Also, if I've managed to break any forum rules, hit me like a brick and I'll gladly fix the issue.)
I'll soon be purchasing a laser + X-Drive combination from our resident DTR. I asked him this same question, and was sent to ask over here, so I'll go ahead and do so.
I'm in the process of building a CNC machine via Arduino+GRBL. My primary tool for the machine will be a laser diode, which will be powered by one of DTR's X-Drives. The thing is, I would very much prefer the ability to power the laser on/off, in a TTL-style way, via GRBL's PWM support. To do this, my plan is to wire a MOSFET (likely an IRF3025) between the power source and the X-Drive, the gate being wired to the PWM pin. I would also have something like a 1N5408 (it is a 2.4A driver, after all) on the driver leads for extra protection. The setup would be nearly identical to this (clearly not driving a motor..): http://bildr.org/blog/wp-content/uploads/2012/03/rfp30n06le-arduino-solenoid.png
My question is what I should expect from this setup. For example, would the driver (or diode, more importantly) potentially suffer in any way from being constantly supplied with/deprived of power in this specific manor, be it slowly or rapidly (think PWM-based Raster-engraving)?
Any help, be it advice or alternative suggestions to any part of the design, would be greatly appreciated!
(Also, if I've managed to break any forum rules, hit me like a brick and I'll gladly fix the issue.)