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Note 8 – Intangible Assets (Tables) | 3 Months Ended
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Jul. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets and Goodwill [Table Text Block] |
|  | July 31, 2023 |  | April 30, 2023
|  | Gross Value |  | Accumulated Amortization |  | Net Value |  | Gross Value |  | Accumulated Amortization |  | Net Value
Proprietary technology |  | $ | 4,967,000 |  |  | $ | (1,050,448 | ) |  | $ | 3,916,552 |  |  | $ | 4,967,000 |  |  | $ | (841,223 | ) |  | $ | 4,125,777 |
Non-compete agreements |  |  | 81,000 |  |  |  | (63,417 | ) |  |  | 17,583 |  |  |  | 81,000 |  |  |  | (56,667 | ) |  |  | 24,333 |
Customer relationships |  |  | 39,000 |  |  |  | (19,499 | ) |  |  | 19,501 |  |  |  | 39,000 |  |  |  | (18,106 | ) |  |  | 20,894 |
Total finite-lived assets |  |  | 5,087,000 |  |  |  | (1,133,364 | ) |  |  | 3,953,636 |  |  |  | 5,087,000 |  |  |  | (915,996 | ) |  |  | 4,171,004 |
Brand name |  |  | 3,152,000 |  |  |  | — |  |  |  | 3,152,000 |  |  |  | 3,152,000 |  |  |  | — |  |  |  | 3,152,000 |
Total indefinite-lived assets |  |  | 3,152,000 |  |  |  | — |  |  |  | 3,152,000 |  |  |  | 3,152,000 |  |  |  | — |  |  |  | 3,152,000 |
Total intangible assets, net |  | $ | 8,239,000 |  |  | $ | (1,133,364 | ) |  | $ | 7,105,636 |  |  | $ | 8,239,000 |  |  | $ | (915,996 | ) |  | $ | 7,323,004 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Fiscal Year Ended: |  |
| 2024 |  |  | $ | 649,437 |
| 2025 |  |  |  | 842,471 |
| 2026 |  |  |  | 815,271 |
| 2027 |  |  |  | 786,679 |
| 2028 |  |  |  | 644,833 |
| Thereafter |  |  |  | 214,945 |
| Total |  |  | $ | 3,953,636 |
Schedule of Goodwill [Table Text Block] |
| Date |  | Acquisition |  | Goodwill
| January 2020 |  |  | Rotor Riot |  | $ | 1,849,073 |
| November 2020 |  |  | Fat Shark |  |  | 6,168,260 |
| May 2021 |  |  | Skypersonic |  |  | 2,826,918 |
| August 2021 |  |  | Teal Drones |  |  | 8,995,499 |
| April 2023 - Impairment loss |  |  | Skypersonic |  |  | (2,826,918 | )
| Balance at April 30, 2023 and July 31, 2023 |  |  |  |  | $ | 17,012,832 |

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