High-tech wizardry and old-school technology blend to create a holiday light show in Mandarin.

Caleb Wolfram, 19, has spent countless hours designing the light display on his parents’ house at 1423 Rivergate Drive off Mandarin Road. He meticulously programmed the 50,000 lights to flash, blink and flow to match classic holiday tunes in a 30-minute show.

“I really overthink a lot of stuff,” said Wolfram, who was home-schooled and now studies heating and air-conditioning at Jacksonville Technical Institute. “I’ve got hundreds of spreadsheets and everything is pre-calculated for the power load.”

Read the rest of this story at the Florida Times-Union, a Jacksonville Today news partner.