First: distinguish your laser type by distinguish my laser module types
For analog type laser module:
- Connect 12V and GND to your adapter, the fan should on.
- Connect TTL/PWM to 12V(for test only), the laser will on at full power.
For digital type laser module:
- Connect 12V and GND to your adapter, the fan should on for 2seconds, the red led should blink about 7 times.
- Connect TTL/PWM to 12V(for test only), the laser will on at full power.