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Note 6 - Debt - Schedule of Debt (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Short-term and Long-term Debt, Gross	$ 1,386,840	$ 1,583,881
Less unamortized discount and debt issuance costs	(189,265)	(294,119)
Total notes payable	1,197,575	1,289,762
Current portion of long-term debt	294,113	399,614
Long-term portion	903,462	890,148
Convertible Notes Payable Issued May 21, 2019 [Member]
Short-term Debt	179,772	318,012
Convertible Notes Payable Issued July 17, 2019 [Member]
Short-term Debt	75,436	133,405
Loan Agreement [Member]
Long-term Debt, Gross	1,000,000	1,000,000
Paycheck Protection Program CARES Act [Member]
Long-term Debt, Gross	130,200	130,200
Second Note [Member] | Notes Payable, Other Payables [Member] | Director, President, CEO,CFO, and Secretary [Member]
Short-term Debt	859	859
Miscellaneous Equipment Loans [Member]
Long-term Debt, Gross	$ 573	$ 1,405

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