| Note 7 - Convertible Notes Payable, Unsecured - Debt (Details) - USD ($) | Sep. 30, 2023 | Sep. 30, 2022 | 
|---|---|---|
| Exchange Notes [Member] | ||
| Long-Term Debt, Gross | $ 699,781 | $ 699,781 | 
| Second Closing Notes [Member] | ||
| Long-Term Debt, Gross | 636,000 | 0 | 
| Third Closing Notes [Member] | ||
| Long-Term Debt, Gross | 702,720 | 0 | 
| Exchange, Second, and Third Closing Notes [Member] | ||
| Long-Term Debt, Gross | 2,038,501 | 699,781 | 
| Unamortized debt discount | (379,799) | 0 | 
| Net Balance | 1,658,702 | 699,781 | 
| Current Balance | (1,658,702) | 0 | 
| Non-Current Balance | $ 0 | $ 699,781 | 
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount, after accumulated amortization, of debt discount. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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