I just ordered a motor shield and was reading through the notes on how to use it and I see that channel B uses pin 13 to control the motor direction. Isn't that the same as the on-board LED? Does it cause issues with the led? Do I need to disable the led?
While I am at it, can the on-board digital inputs be used if they are the same as the inputs needed for the motor shield? In other words, if digital inputs 3, 8, 9, 10, 11 & 13 are used by the motor shield, and I have three ultra-sonic sensors, each of which require two digital pins, say 1, 2, 4, & 5, and I also want to have some status LEDs, 6, 7, 12, I am now out of inputs for any other sensors, correct? Or can I use the motor shield pins, even though they are used internally? Does that even make sense? I am thinking no, I cannot use the pins 3, 8, 9, 10, 11 & 13 since the motor shield will use them internally.