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Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Inventory Valuation Reserves, Ending Balance	$ 39,700						$ 39,700		$ 39,700
Net Income (Loss) Attributable to Parent, Total	(1,625,341)	$ (1,368,011)	$ (1,904,166)	$ (787,301)	$ (1,289,229)	$ (812,944)	(4,897,518)	$ (2,889,474)
Net Cash Provided by (Used in) Operating Activities, Total							(4,369,478)	$ (2,133,780)
Retained Earnings (Accumulated Deficit), Ending Balance	(22,485,218)						(22,485,218)		(17,587,700)
Fair Value, Recurring [Member]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0						0		0
Assets, Fair Value Disclosure	$ 0						$ 0		$ 0
Warrants To Purchase Common Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	63,321,294			30,440,478			63,321,294	30,440,478
Warrants To Purchase Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,768,147			1,768,147			1,768,147	1,768,147
Computers and Vehicles [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life							3 years
Computers and Vehicles [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life							5 years
Machinery and Furniture [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life							7 years
Machinery and Furniture [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life							10 years