im trying to do a little project the purpose or the goal of

i\'m trying to do a little project

the purpose or the goal of the project is to use an arduino board to use a motor and spin it back and forth in both directions

now the reason why i\'m posting this question is i\'m having difficulty finding a comprehensive tutorial that can help me in this regard. the most comprehensive i was shown was a youtube tutorial that used this diagram in this link
https://www.youtube.com/watch?v=5nDaHJqruq0&list=WL&index=25
but the code used is missing so i don\'t know how to structure it

Solution

To accelerate and decelerate the motor. To do this simply change the loop() code to read

for further details please read the article in

http://www.instructables.com/id/Arduino-Expermentation-Kit-How-to-get-Started-wi/step5/Spin-Motor-Spin-Transistor-amp-Motor-CIRC03/