I've got the Adafruit ARDX - v1.3 Experimentation Kit for Arduino (Uno R3). The mounting board for the breadboard and microcontroller was kind of weird which I hope isn't a bad omen but I've got that set up. Before I break anything, there are a few practicalities I want to get out of the way. My knowledge of electronics is largely theoretical (which is why I got this thing), so a laundry list of questions around the Arduino system, mainly the breadboard. For reference, here is the very first project described in my kit:
- Do the pin headers serve any purpose circuit-wise, or are they just there to hold down the paper?
- How do I know that I need a 560 ? resistor rather than any other sort of resistor? More generally, how can I determine likely tolerable parameters of operation for any of my components?
- Out of curiosity, do I actually need to connect the + bus strip to the 5V output on the microcontroller or could I attach it to the - bus strip instead? In other words, is this merely a matter of convention?
- Why is the 5V connection there at all? Why is it necessary? As far as I can see, it does nothing in that configuration.