Note 5 - Stockholders' Deficit (Details Textual)						12 Months Ended
	Sep. 15, 2023 shares	Feb. 21, 2019 USD ($)	Jan. 14, 2019 USD ($) $ / shares shares	Dec. 10, 2018 USD ($) $ / shares shares	Nov. 16, 2017 $ / shares	Jun. 30, 2023 USD ($) shares	Jun. 30, 2022 USD ($) shares	Jun. 30, 2021 USD ($) shares	Jun. 30, 2020 shares	Feb. 19, 2019 USD ($)	May 07, 2018 $ / shares
Stock Issued During Period, Shares, New Issues (in shares) | shares						0	0
Mandatorily Redeemable Preferred Stock Liability | $			$ 105,000
Accretion Expense | $						$ 0	$ 1,650
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number (in shares) | shares						0
Equity, Attributable to Parent | $						$ (9,856,235)	(8,221,987)	$ (6,842,780)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares						0
Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number (in shares) | shares						0
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) | shares						0
Shares Subscriptions and Obligations to Issue Shares [Member]
Equity, Attributable to Parent | $						$ 61,250	61,250	$ 61,250
Conversion of 2% Promissory Note Into Common Shares [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares								0	0
Previous Chief Financial Officer [Member]
Deferred Compensation Arrangement with Individual, Shares Issued (in shares) | shares						36,000
Deferred Compensation Arrangement with Individual, Fair Value of Shares Issued | $						$ 3,600
Director [Member]
Deferred Compensation Arrangement with Individual, Common Stock Reserved for Future Issuance (in shares) | shares						65,000
Deferred Compensation Arrangement with Individual, Recorded Liability | $						$ 37,650
The 2% Promissory Note [Member]
Debt Instrument, Face Amount | $		$ 80,000								$ 80,000
Debt Instrument, Interest Rate, Stated Percentage		2.00%								2.00%
Debt Instrument, Convertible, Number of Equity Instruments		1,000,000
The 2% Promissory Note [Member] | Shares Subscriptions and Obligations to Issue Shares [Member]
Equity, Attributable to Parent | $						$ 20,000
Convertible Debt [Member]
Debt Instrument, Interest Rate, Stated Percentage						24.00%
Convertible Debt [Member] | Convertible Debt Agreements With L2 and SBI [Member]
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares											$ 0.0293
Maximum [Member] | Stock Purchase Warrant [Member]
Class of Warrant or Right, Issued During Period, Exercise Price (in dollars per share) | $ / shares					$ 0.05
Series B Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares			2	40
Shares Issued, Price Per Share (in dollars per share) | $ / shares			$ 2,250	$ 2,250
Proceeds from Issuance of Convertible Preferred Stock | $			$ 4,500	$ 90,000
Preferred Stock, Dividend Compounded Annually, Percentage			12.00%
Preferred Stock, Dividend Compounded Annually, Period (Year)			3 years
Convertible Preferred Stock, Shares Issued upon Conversion (in shares) | shares			12,500
Preferred Stock, Redemption Price Per Share (in dollars per share) | $ / shares			$ 2,500
Preferred Stock, Redemption, Period (Year)			36 years
Dividends, Preferred Stock | $						$ 0	6,420
Accretion Expense | $						$ 0	$ 1,650
Series B Preferred Stock [Member] | Subsequent Event [Member]
Stock Repurchased and Retired During Period, Shares (in shares) | shares	40
Series B Preferred Stock [Member] | Minimum [Member]
Preferred Stock, Convertible, Period (Month)			12 months
Series B Preferred Stock [Member] | Maximum [Member]
Preferred Stock, Convertible, Period (Month)			36 months