How can I power something with the 3.3V on pin 17, that needs only abt. 1.3V?
I am going to install a Zero in a dummy security camera that already has a (C-baby) battery powered circuit with a blinking led. I have heard that it's a very efficient circuit and led, so my first aim is to power it through pin 17.
I suppose the solution is some resistor, but I don't know which. The last time I did some calculating on simple circuitry was on highschool some forty years ago