this article : http://www.bristolwatch.com/ele/transistor_drivers.htm
I'm gonna recap what I understood just to make sure I won't hurt my Arduino - A MOSFET is kinda like a transistor but controlled by the voltage on the gate and not the current.- The characteristics of a MOSFET are: the voltage needed on the gate to turn it fully on and the current supported by the source-drain.
- A logic level MOSFET (what does that mean ?)- A MOFSET that is fully on with 5V and the current produced by the Arduino (30mA ?)
- A MOFSET that supports at least 12V and the current that my LEDs are gonna need.
- For connecting it to my Arduino, I just connect the output pin directly to the gate, the +12 to the LEDS and the other cable of the LEDS to the source and then the GND to the drain.
- It's not needed to put a resistor between the Arduino and the gate because it's voltage controlled not current right ?
- A resistor between the gate and the GND will make the LEDs on when my Arduino is off.