I just created a car parking system using Raspberry Pi 3, a button, a small termic printer, a stepper motor, a ultrasonic distance sensor and a webcam as a barcode reader.
At the moment it's in a very small scale.
Actually it controls only the access of the hot wheels cars of my kids into our parking area under their beds.
Another problem is that the payment is done exclusively with Monopoly banknotes. :-/
But it is indeed a very complete system.
Of course it was thought to be a prototype and now we found the time to make it in a 1:1 scale.
Everything can be easily transposed, but the pivotant car barrier.
Today we're using a plastic straw connected to a stepper motor (28BYJ-48 5V).
Unfortunatelly we can't stop a real car with a plastic straw, so we need something more robust.
I'd like to use a barrier (with more or less 1.5 Kg) connected to a more stronger stepper motor that can hold this weight.
So finally the question:
Which motor I could use for that and what kind of driver would be needed?
Many thanks in advance!