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Folk this is my finalized laser project that was totally homemade specially the casing 
, the long one used 3pcs RCR123A 3.6v for the 4x BR laser burner using DDL circuit LD driver , the next one is the DVD 20x burner using 2pcs RCR123A 3.6v using also DDL circuit LD driver, then the last one contains 10mw Green Module with own driver and using 2 AAA rechargeable 1.2v batteries. i make all this possible with the help of Cool LPF guys here 
... thanks you all... ;D
, the long one used 3pcs RCR123A 3.6v for the 4x BR laser burner using DDL circuit LD driver , the next one is the DVD 20x burner using 2pcs RCR123A 3.6v using also DDL circuit LD driver, then the last one contains 10mw Green Module with own driver and using 2 AAA rechargeable 1.2v batteries. i make all this possible with the help of Cool LPF guys here ... thanks you all... ;D