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  1. J

    40W 980nm Laser diode array for cutter/engraver?

    I have been looking at purchasing a Chinese 40w CO2 laser engraver. I'm quite familiar with buying from China and the QC issues, etc. I have found a supplier who is reportedly selling 40w 980nm Diode Laser bars somewhere in the $100-300US range, which considering shipping cost/risk on a laser...
  2. J

    Q about microcontroller PWM to Red Laser

    Thanks guys, goldfingerfif: I'm using Bascom basic for AVR Atmel processor. I could use C but it just seems cumbersome and doesn't offer any major advantages. woop: I have a better circuit than that ... its a modified joule thief / solar light, uses feedback from the inductor to switch the...
  3. J

    Q about microcontroller PWM to Red Laser

    Hi, To cut to the chase: I need to control the brightness of a Red Laser Diode from a Microcontroller. What is the best frequency and duty cycle range to drive a Red Laser Diode from a Microcontroller? Has anyone got any circuit diagrams for PWM driving? Can I get away with PWM from Micro and...


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