Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)		12 Months Ended
	Jan. 03, 2023	Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2021
Accounts Receivable, after Allowance for Credit Loss, Total				$ 71,000
Accounts Receivable, Allowance for Credit Loss, Ending Balance		$ 10,300	$ 21,800
Inventory Valuation Reserves		52,900	52,900
Net Income (Loss) Attributable to Parent, Total		(15,450,888)	(14,286,655)
Retained Earnings (Accumulated Deficit), Total		(63,799,379)	(48,348,491)
Net Cash Provided by (Used in) Operating Activities, Total		(15,114,241)	(15,005,298)
Cash and Cash Equivalents, at Carrying Value, Total		1,543,418	$ 16,612,711
Working Capital Deficit		$ 677,886
Registered Direct Offering [Member] | Subsequent Event [Member]
Proceeds from Issuance or Sale of Equity, Total	$ 3,700,000
Warrants To Purchase Common Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)		2,045,846	2,048,186
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)		425,646	222,700
Computers and Vehicles [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)		3 years
Computers and Vehicles [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)		5 years
Machinery and Furniture [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)		7 years
Machinery and Furniture [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)		10 years