12v 3w led project?
I am trying to build a "knight rider" light for my car using 3w led's.
I know enough that I want to per sections (8 sections), and to wire the led's in series.
They will be mounted to an aluminum bar so I don't think I need heatsinks.
They will be controlled by a "chaser light" sequential controller.
The specs are:
3w yellow led:
forward voltage: 2.9v - 3.3v
forward current: 750 mA
I have researched and found led driver's but they are a bit more expensive than I would like to pay right now.
Can you guys help me with what I need for this to work in my car.
Do I need transistors, what resistors do I need (values, wattage, etc).
I need some help from you guys.
How do I do this?????