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Recent content by emilvv

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    Help need to identify TTL ( + ) and ( - ) ...

    Hello, I checked the FAN ( - ) and it is connected to one of the TTL pins - as attached image ... Is it the TTL pin ( - ) ?? :) Also .... attached TTL cable ( from my aliexpress order ... ) is with BLACK and RED wires .... and black is exactly to let say ( - ) TTL pin on the PCB .... :) ...
  2. E

    Help need to identify TTL ( + ) and ( - ) ...

    Hello, Here is the product link .. https://www.aliexpress.com/item/405nm-300mW-12V-High-Power-TTL-Adjustable-Focus-Blue-Laser-Module-DIY-Laser-engraver-accessories-0/32800889442.html?spm=a2g0s.9042311.0.0.jr7g4B PCB is placed with glue to case - it is hard to make picture ... :( Regards, Emil
  3. E

    Help need to identify TTL ( + ) and ( - ) ...

    Hi, I post welcome message ... :) I tryed to ask china aliexpress store ... but no answer ... yet . Also browse many google pictures for laser drivers ... all like mine with no TTL schematic .. :( Regards, Emil
  4. E

    Hello from Bulgaria

    Hello from Bulgaria, My name is Emil. I am interested in UV laser for PCB fabrication ( DIY related .. ) Best regards,
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    Help need to identify TTL ( + ) and ( - ) ...

    Hello from Bulgaria, Europe, I have two 405nm lasers with this TTL drivers, but on the PCB TTL ( + ) and ( - ) are not marked ... Please, if you know where they are - attach the image with correct labeled + and - of TTL control ... or give an idea how to find them .. :) THANK YOU in...
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