Note 8 - Equity Transactions and Stock-based Compensation (Tables)

9 Months Ended

Mar. 31, 2022

Notes Tables

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Risk Free Interest Rate		0.01% to 0.78	%
Volatility		115.1% to 169.0	%
Term	4 1/2 to 10 years
Dividend Rate		0.00	%
Closing Price of Common Stock	$	0.95

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

				Weighted
				Average
				Exercise
	Options			Price
Outstanding as of June 30, 2021		3,916,666		$	0.26
Granted		564,700			0.97
Exercised		(29,667	)		0.25
Terminated		(30,633	)		0.30
Outstanding as of March 31, 2022		4,421,066		$	0.35
Exercisable at March 31, 2022		3,404,799		$	0.25