I design this automation switching by use SG92R servo motor control directly.
This model can use with double switch that show in the picture.
So, It can use with double switch track that you buy from AliExpress same that show in the picture.
please note that maybe you need to make switch use not too much force to control it by use graphite powder for lubricant.

when you print the top. you can place it up side down.

Please visit my youtube chanel at http://www.youtube.com/@BrickTrainAuto

video
https://youtu.be/aM4W-ffXY9Y?si=JZdOFs2XhZyKVkBd