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![EN] 3D Printer PWM/TTL Laser Adapter - Pasquale 'sid' Fiorillo](https://blog.pasqualefiorillo.it/wp-content/uploads/2019/02/schematics-2-1024x598.png "EN] 3D Printer PWM/TTL Laser Adapter - Pasquale 'sid' Fiorillo")
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