Note 7 - Convertible Notes Payable, Unsecured (Tables)
|
12 Months Ended |
Sep. 30, 2023 |
|---|
| Notes Tables |
|
| Convertible Debt [Table Text Block] |
| |
|
September 30,
2023
|
|
|
September 30,
2022
|
|
|
Senior Secured Convertible Promissory Notes (the “2022 Notes”, includes $96,000 of related party notes)
|
|
$ |
4,230,000 |
|
|
$ |
4,230,000 |
|
|
Unamortized debt discount
|
|
|
(710,897 |
) |
|
|
(2,567,508 |
) |
|
Net Balance
|
|
|
3,519,103 |
|
|
|
1,662,492 |
|
|
Current Balance
|
|
|
(3,519,103 |
) |
|
|
- |
|
|
Non-Current Balance
|
|
|
- |
|
|
|
1,662,492 |
|
|
| Schedule of Share-Based Payment Award, Warrants, Valuation Assumptions [Table Text Block] |
| |
|
First closing
|
|
|
Second Closing
|
|
|
Third Closing
|
|
| |
|
Note
holders
|
|
|
Placement
Agent
|
|
|
Note
holders
|
|
|
Placement
Agent
|
|
|
Note
holders
|
|
|
Date of valuation
|
|
July 6, 2022
|
|
|
January 18, 2023
|
|
|
May 15, 2023
|
|
|
Closing price per share of Common Stock
|
|
$ |
9.98 |
|
|
$ |
9.98 |
|
|
$ |
5.76 |
|
|
$ |
5.76 |
|
|
$ |
2.77 |
|
|
Exercise price per share
|
|
$ |
9.94 |
|
|
$ |
10.06 |
|
|
$ |
9.94 |
|
|
$ |
10.06 |
|
|
$ |
9.94 |
|
|
Expected volatility
|
|
|
88.44 |
% |
|
|
88.44 |
% |
|
|
111.31 |
% |
|
|
111.31 |
% |
|
|
114.33 |
% |
|
Risk-free interest rate
|
|
|
2.96 |
% |
|
|
2.96 |
% |
|
|
3.43 |
% |
|
|
3.43 |
% |
|
|
3.46 |
% |
|
Dividend yield
|
|
|
— |
|
|
|
— |
|
|
|
— |
|
|
|
— |
|
|
|
— |
|
|
Remaining expected term of underlying securities (years)
|
|
|
5.0 |
|
|
|
5.0 |
|
|
|
5.0 |
|
|
|
5.0 |
|
|
|
5.0 |
|
|
| Exchange, Second, and Third Notes [Member] |
|
| Notes Tables |
|
| Convertible Debt [Table Text Block] |
| |
|
September 30,
2023
|
|
|
September 30,
2022
|
|
|
Exchanged notes (July 2022)
|
|
$ |
699,781 |
|
|
$ |
699,781 |
|
|
Second closing notes (January 2023)
|
|
|
636,000 |
|
|
|
- |
|
|
Third closing notes (March, April, May, 2023)
|
|
|
702,720 |
|
|
|
- |
|
|
Total
|
|
|
2,038,501 |
|
|
$ |
699,781 |
|
|
Unamortized debt discount
|
|
|
(379,799 |
) |
|
|
- |
|
|
Net Balance
|
|
|
1,658,702 |
|
|
|
699,781 |
|
|
Current Balance
|
|
|
(1,658,702 |
) |
|
|
- |
|
|
Non-Current Balance
|
|
|
- |
|
|
|
699,781 |
|
|