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

9 Months Ended

Mar. 31, 2023

Notes Tables

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

Risk Free Interest Rate		3.85% to 4.00	%
Volatility		103.3% to 116.9	%
Term	4.5 to 7.5 years
Dividend Rate		0.00	%
Closing Price of Common Stock	$	0.41

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

				Weighted
				Average
				Exercise
	Options			Price
Outstanding as of June 30, 2022		4,443,933		$	0.36
Granted		527,000			0.42
Exercised		-			-
Terminated		(591,949	)		0.46
Outstanding as of March 31, 2023		4,378,984		$	0.35
Exercisable at March 31, 2023		3,576,550		$	0.30