I work at a k-8 school and am currently working on some arduino projects for afterschool. One of the kids is excelling very well and built his circuit correctly, and started to help some of the other kids that were going a little slower.
As he helped them after he successfully put his together, he followed the instructions(arduino starter kit with arduino uno rev.3) as they are in the book to help the students.
He said he couldnt figure out what was wrong with the other students projects because they looked exactly like his. So the class ended and i started to look over the students work to see why they werent working.
As far as i can tell they are exactly as the student that got his to work. I even took apart theirs and tried to get them to work bu couldnt.
Out of a set of 6 i built the circuit the same exact way as it is described in the book and cannot get the other students 4 projects that look EXACTLY the same to work.
I have even had two other teachers follow the instructions in the book to the T and they cannot get it to work either.