2 tutorial questions, for understanding
Hey just trying to figure out the reasoning for a few tutorials. I have been following the adafruit learning center stuff too and its made me rethink a few of the tutorials in the starter pack.
Question 1: Tutorial 1, led blinking (basic question) - theres a ground connection for the led through a resistor.. but what purpose does the 5v connection serve? the 5v is provided by the pin and the circuit is complete. this seems redundant.
Question 2: Tutorial 7, Buttons - there is a cable going to 5v, and the resistors on the buttons are connected to that rail, rather then the ground. the buttons are already connected to pins, so why are the resistors not connected to ground, and remove the 5v connection cable?
Really would like some help on this so I can move on! Thanks in advance :D