Note 4 - Property and Equipment - Major Classes of Property and Equipment (Details) - USD ($)	Jun. 30, 2024	Sep. 30, 2023
Property and equipment, gross	$ 2,348,767	$ 2,175,219
Less accumulated depreciation	(1,795,700)	(1,458,640)
Property and equipment, net	553,067	716,579
Computers, Furniture, and Equipment [Member]
Property and equipment, gross	1,577,411	1,392,776
Manufacturing Equipment [Member]
Property and equipment, gross	284,275	284,275
Leasehold Improvements [Member]
Property and equipment, gross	487,081	487,081
Automobiles [Member]
Property and equipment, gross	$ 0	$ 11,087