I've been trying to understand the Ardumoto behavior I'm seeing when I run the example sketch "Ardumoto_test_2".
I've run with a couple motors, and they turn, but not the way I'd expect, and one of them hardly turns at all.
I disconnected the motors just to figure out what the LEDs are telling me.
So my first question is: Can I run using USB power if I don't have any motors connected?
When I connect the arduino to external power I get the same results as below.
To test it and figure out what it's doing, I'm not connecting any motors and just watching the LEDs. This is ok, right?
- The Ardumoto has blue and yellow LEDs to indicate direction, but - I never see the blue ones light at all.
- The yellow LED on the left of the motor blocks is always yellow and seems to dim slightly when in slow speed.
- The yellow LED on the right of the motor blocks goes on only when in the REVERSE direction and is off when in FORWARD.
Does this sound like the correct behavior?
When should I expect the blue LEDs to light?
Thanks,
Ed