Inventors, job seekers and tech enthusiasts alike will have an opportunity to see what local technology companies have to offer at the second annual Long Island Tech Day set for Tuesday in Uniondale.

The free expo, held last year at LaunchPad Huntington, has outgrown that space, with more than 1,500 attendees already registered, including more than 50 investors, 100 business exhibitors and 200 job seekers, said Andrew S. Hazen, chief executive and co-founder of LaunchPad, a co-working space for startups.

"Last year we were at 740 total [registrations], and we only had some 40 odd exhibitors," said Hazen, who credits the event's growth to support from Nassau County and TCubed -- short for Tech Task Team -- a public-private advisory committee formed earlier this year.

"I think it will be a great opportunity for the companies exhibiting to showcase their products and services," he said.

Representatives of several companies, including Canon, Arrow Electronics and eGifter will speak with potential job candidates, Hazen said. In addition to showcasing their products, Island inventors will have a chance to meet with recruiters from CNBC's "Make Me a Millionaire Inventor" to learn about landing a spot on the show.

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The afternoon event will be held at the Mitchel Field Athletic Complex, 1 Charles Lindbergh Blvd. The expo runs from 2 to 6 p.m., with a networking event scheduled from 6 to 8 p.m.

For more information on registering for the event, visit LITechDay.com.