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Driving a +3.3V load with a +5V logic high.

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GopherT

GopherT

Joined Nov 23, 2012
8,009
Mike_Nelsen said:
Followup:

If I wanted to drive multiple lasers with the setup presented by GopherT, would it be smarter to wire all of them in parallel where the existing LED is, or would I want this circuit for each individual LED?
Click to expand...

You would want a circuit for each laser. All circuits could be connected to one microcontroller pin (maybe two) - you'll have to check the current limits of your micro's pins.
 
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