Playing with high voltage

Now I’m playing with high voltage.

Well,12v DC which is much higher than the 5v I’ve been dealing with. And to increase my chance of hurting myself I’ve been dealing with higher current in the 2+ amp scale, which is much higher than the 60mA I’ve been working with. So I’ve been careful not to cross the streams like Egon.

The circuit is really simple: power, MOSFET to switch on the current, and a pull-down resistor. Now that I have an idea of how to get higher-intensity lighting with Arduino, I can reevaluate how the main lamp will be constructed.