Note 12 - Equity Transactions and Stock-based Compensation (Tables)

12 Months Ended

Jun. 30, 2024

Notes Tables

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

Risk Free Interest Rate		3.90% to 4.36	%
Volatility		116.5% to 131.7	%
Term		7.5 to 10.0 years
Dividend Rate		0.00	%
Closing Price of Common Stock	$	0.24 to 0.33

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

				Weighted
				Average
				Exercise
	Options			Price
Outstanding as of July 1, 2022		4,443,933		$	0.36
Granted		527,000			0.42
Exercised		-			-
Terminated		-			-
Expired		(594,649	)		0.46
Outstanding as of June 30, 2023		4,376,284			0.35
Granted		782,500			0.27
Exercised		(150,000	)		0.09
Terminated		(18,000	)		0.53
Expired		(241,601	)		0.44
Outstanding as of June 30, 2024		4,749,183		$	0.34
Exercisable at June 30, 2023		3,626,551		$	0.30
Exercisable at June 30, 2024		3,804,150		$	0.34

Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

												Weighted
							Weighted		Weighted Average			Average
							Average		Remaining			Exercise
Range of Exercise Price					Outstanding		Exercise Price		Contractual Life (years)	Exercisable		Price
$	0.09	-	$	0.09		1,071,000	$	0.09	0.9		1,071,000	$	0.09
$	0.21	-	$	0.21		1,194,000		0.21	4.9		1,194,000		0.21
$	0.23	-	$	0.23		100,000		0.23	2.4		100,000		0.23
$	0.24	-	$	0.26		582,500		0.25	9.4		-		-
#	0.33	-	$	0.33		200,000		0.33	9.1		200,000		0.33
$	0.41	-	$	0.41		414,334		0.41	8.1		140,334		0.41
$	0.51	-	$	0.51		200,000		0.51	8.0		200,000		0.51
$	0.65	-	$	0.65		566,333		0.65	6.4		566,333		0.65
$	0.95	-	$	0.95		421,016		0.95	7.1		332,483		0.95
$	0.09	-	$	0.95		4,749,183	$	0.34	8.1		3,804,150	$	0.34