Fan Lets RC Car Drive On The Ceiling
L'idée est intéressante, le process est super détaillé, je comprends enfin comment les composants sont placés sur le PCB

Downforce is a major part of modern motorsport, keeping cars glued to the track at high speeds. However, for small radio control cars, adding a fan for a little suction can achieve even greater feats, as demonstrated by this build by [DD ElectroTech].
via Hackaday : lire l’article source