It’s time for Maker Faire, that annual celebration of wild science-fueled DIY projects and entertainment.

Running Friday through Sunday, the 14th annual event, billed as the “purest showcase of raw American innovation,” will highlight the latest in robotics, virtual reality, artificial intelligence, drones and droids, mobile architecture, climate management — along with demonstrations, art exhibits and hands-on workshops where you can learn wacky and useful things.

Over-the-top highlights include: A 32-foot-long homemade submarine built by women in Berkeley who are submersible enthusiasts; a self-solving Rubik’s Cube; clothing made from kombucha tea; a 3D-printed space habit; and a diesel-to-electric 1959 El Camino mounted to a hydraulic excavator that’s activated by smartphone.

Hands-on projects will include light saber training, screen printing, soldering, lace making, coding and circuit building, with some billed as drop-in workshops and others requiring advance registration.

Tips: Because about 120,000 adults and kids attend every year, you’d be well-advised to buy tickets online in advance to save time (and money). Also, check the Maker Faire website to figure out a transportation plan — Caltrain, nearby parking lots (with free shuttles Saturday and Sunday), bus or bicycle. Limited onsite parking costs $35.

Details: 1-5 p.m. Friday (limited tickets), 10 a.m.-7 p.m. Saturday, 10 a.m.-6 p.m. Sunday; San Mateo County Event Center, San Mateo; one- and two-day passes $25-$40 in advance, $30-$85 at the door; www.makerfaire.com/bay-area/.

— Linda Zavoral, Staff