This is for older car models that do not have built-in navigation or bad navigation. My car is old enough to have a cassette player.
This model is made for a Toyota Yaris from 2001 and the phone inside is an S21 Ultra that would otherwise have been sitting in a drawer.
I have sacrificed the original sunvisor to get the swivel part out and modeled a new sunvisor around it. Since this car is really old it’s okay to make these modifications.
So far the driving experience has improved a lot, it is a pretty decent location for a navigation system since you can focus on driving much more easily than having to look down and to the right.
The models and FreeCAD design file may be found here:
https://www.printables.com/model/1256013-toyota-yaris-sun-visor-with-navigation-phone
I’ve made it out of PETG so a hot summer day shouldn’t be an issue.
Don’t count on it. On really hot days the interior of a car sitting under the sun can reach petg’s glass transition temp. I’ve had petg prints, also attached to the visor as it happens, soften up and deform in my car.