Yes, you do need to file a US 1040 NR return because you received US-sourced income from your business. Turbo Tax does not handle 1040 NR return but our affiliate at Sprint Tax does. You may wish to contact them for more specific details by clicking on that blue link.
You should include all income from US sources no matter how big or small. Since you have a single-member LLC, it is not necessary to file a 1120 or 5472 because a single-member LLC is not a corporation. You may be able to to file the income on your own individual tax return without corporate forms. Contact Sprint Tax for more details.
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