So, my electronics knowledge is limited. I'm going to build a thing with LED buttons. I'm getting three of these (3V) and three (or possibly six) of these (2.2V) and hooking them up to a USB powered 5V Pro Micro. The orange 2.2V ones I want to be lit up at all times, and the white 3V LEDs only when its button is pressed.
How do I accomplish this?
All I/O pins on the Pro Micro will be used for various components. (not including the button LEDs) I'm thinking I will wire the oranges (in parallel?) to VCC. I read that using a single resistor in series with parallel wired LEDs is not a good idea as forward voltage may differ slightly. So I will need one resistor in series with each LED? For the whites I'm thinking I should be able to wire these directly to their button switches, but I'm unsure of the resistance also in this case. The whole thing with limiting resistors for LEDs just confuses me. I roughly understand the concept, but not when it comes down to the details.
Thanks for any help