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Note 2 – Summary of Significant Accounting Policies (Tables) | 6 Months Ended
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Oct. 31, 2024
Accounting Policies [Abstract] |
[custom:RestatementsOfPreviouslyIssuedConsolidatedFinancialStatementsTableTextBlock] |
|  | Condensed Consolidated Statement of Operations For the three months ended October 31, 2023 |  |
|  | Originally Reported |  | As Restated |  | Change
Change in fair value of derivative liability |  | $ | (162,482 | ) |  | $ | — |  |  | $ | (162,482 | )
Net loss |  | $ | (5,681,328 | ) |  | $ | (5,843,810 | ) |  | $ | (162,482 | )
|  | Condensed Consolidated Statement of Operations For the six months ended October 31, 2023 |  |
|  | Originally Reported |  | As Restated |  | Change
Change in fair value of derivative liability |  | $ | (189,002 | ) |  | $ | — |  |  | $ | (189,002 | )
Net loss |  | $ | (11,491,676 | ) |  | $ | (11,680,678 | ) |  | $ | (189,002 | )
|  | Condensed Consolidated Statement of Stockholders’ Equity For the six months ended October 31, 2023 |  |
|  | Originally Reported |  | As Restated |  | Change
Additional paid-in capital |  | $ | 112,102,691 |  |  | $ | 114,752,317 |  |  | $ | 2,649,626 |
Accumulated deficit |  | $ | (66,078,469 | ) |  | $ | (68,758,781 | ) |  | $ | (2,680,312 | )
Total equity |  | $ | 45,874,875 |  |  | $ | 45,844,189 |  |  | $ | (30,686 | )
Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
|  | October 31, 2024 |  | April 30, 2024
Customer A |  |  | 38 | % |  |  | * |
Customer B |  |  | 25 | % |  |  | * |
Customer C |  |  | * |  |  |  | 53 | %
Customer D |  |  | * |  |  |  | 24 | %
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] |
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Convertible notes payable |  | $ | — |  |  | $ | — |  |  | $ | 11,911,307 |  |  | $ | 11,911,307 |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] |
|  | October 31, 2024
Issuance date |  |  | 10/1/2024 |
Maturity date |  |  | 10/1/2026 |
Stock price |  |  | 3.06 |
Expected volatility factor |  |  | 92.8 | %
Risk-free interest rate |  |  | 5.21 | %
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block] |
Balance, May 1, 2024 |  | $ | — |
Additions |  |  | 7,681,000 |
Fair value measurement adjustments |  |  | 4,230,307 |
Balance, October 31, 2024 |  | $ | 11,911,307 |
[custom:RevenueRecognitionDisaggregatedRevenueByTypeTableTextBlock] |
|  | Three months ended October 31, |  | Six months ended October 31,
|  | 2024 |  | 2023 |  | 2024 |  | 2023
Contract related |  | $ | — |  |  | $ | 529,437 |  |  | $ | 886,440 |  |  | $ | 840,318 |
Product related |  |  | 1,534,727 |  |  |  | 3,401,431 |  |  |  | 3,424,822 |  |  |  | 4,838,679 |
Total |  | $ | 1,534,727 |  |  | $ | 3,930,868 |  |  | $ | 4,311,262 |  |  | $ | 5,678,997 |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] |
|  | October 31, 2024 |  | October 31, 2023
Series B Preferred Stock, as converted |  |  | 3,896 |  |  |  | 3,896 |
Stock options |  |  | 7,896,903 |  |  |  | 6,861,517 |
Warrants |  |  | 2,292,207 |  |  |  | 1,539,999 |
Restricted stock |  |  | 1,758,313 |  |  |  | 779,850 |
Total |  |  | 11,951,319 |  |  |  | 9,185,262 |

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