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    Eye safe laser to kill mosquitoes ?

    Hi I worked on a project to try to shoot mosquitoes with a laser. It was made with : - raspberry pi 3 - raspi cam - 2 galvanometers to control the direction of the laser - a fast relay to switch on/off the laser - some electronics to control the galvanometers with the raspi (mcp4922) - opencv...
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    Focusing at long distance

    Hi Just got this beam expander (see picture attached) : Laser Beam Expander - New Generation and I use a 180 mW 650nm diode in a aixis module. Without the beam expander, I can focus the aixis module to burn something at 10cm for example. When I put the aixis module on the beam expander (see...
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    Focusing at long distance

    What about ? Laser Beam Expander - New Generation
  4. I

    Focusing at long distance

    I bought glasse on ebay for laser green 532nm, blue 445nm, purple 405nm Many thanks for the replies I will try to make first a setup with a not very powerful laser
  5. I

    Focusing at long distance

    Thanks for the replies ! Ok will have to find a more powerful laser but what is the focal of the lens you use after the beam expander ?
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    Focusing at long distance

    Hi I have a 150mW 405nm Blu-ray Blue-Violet Laser diode and I would like to burn things at several meters (2-3 meters). The laser was sold housed in an aixiz module with adjustable lens (don't know the details of the lens). With some calibration, I could find the distance of the target to burn...
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    linux computer + DAC + aop + driver

    fixed groun problem
  8. I

    linux computer + DAC + aop + driver

    On the driver board there is the pins : - GND and + but only two of them seem connected. I do not connect the ground to the driver only ilda- and ilda+ (see schematic in the previous post)
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    linux computer + DAC + aop + driver

    Hi I want to pilot a laser with a linux computer and with galvanometers bought on ebay (25 k galvo scanner). I had to add a DAC MCP4822 to have output between 0 and 5V and I made the assembly below to have output between ~-5V and ~+5V...





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