I got a few cheap laser diodes that use 4.5V @ 20 mA according to less than datasheet info. Model 6972 Quantity 10 Color Black Material Plastic + iron Specification Power: 5mW; Working voltage: 4.5V; Working current: 20mA; Working range: 1000 meters; Color BIN; Red Features Mini and compact d…

Laser diodes and drivers.

GoForSmoke March 26, 2013, 11:32am 4

HOY! Look what I found!

DIY: Make a $3 Laser Diode Driver!

Best part is I have LM317 somewhere here and prolly the rest too!

Added: why I need a driver:

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