Yes according to this link, it does need to be filled out if the amount of your deduction for each noncash contribution is more than $500. You must also file Form 8283 if you have a group of similar items for which a total deduction of over $500 is claimed.
Turbo Tax should fill in all the information required from the it's deductible section. You do not need to sign it as a stand-alone document. When you do your final review though, Turbo Tax may ask for missing information not reported from It's deductible.