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Note 8 – Intangible Assets (Tables)
 3 Months Ended
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