Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Accounts receivable, allowance for doubtful accounts	$ 68,589	$ 68,589
Right of use lease, amortization	$ 195,121	$ 150,829
Preferred stock, par value (in dollars per share)	$ 0.001
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	13,191,707	13,099,272
Common stock, shares outstanding (in shares)	13,191,707	13,099,272
Undesignated Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Series A Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	3,269,998	3,269,998
Preferred stock, shares outstanding (in shares)	3,269,998	3,269,998
Convertible Notes Payable [Member]
Debt issuance costs	$ 6,655	$ 46,597
Machinery and Equipment [Member]
Property and equipment, depreciation	$ 98,328	$ 81,682