My top tips for this activity:
There were a couple times when I was doing this code where it got a bit tricky. If something isn't working or doesn't seem right, I always go back to the start and check all my steps.
For the ACCESS:bit, you need to make sure you attach the barrier arm in the right spot, otherwise it wont open and close on the right side. Ask for help if you can't quite work it out!
I also had to double check to make sure my micro:bit was attached to the ACCESS:bit the right way. I put a photo on my Part 1 blog showing what it should look like.
The beeper wouldn't stop going at one point, so I just deleted my code and started again from the beginning. Sometimes it's easier than trying to go through and find one thing that's wrong with it.
Don't forget to leave a comment below so you can tell me how you went trying out this activity, and what blogs you want me to do next!