v3.26.1
Note 3 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Apr. 30, 2026
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

April 30,

  

April 30,

 
  

2026

  

2025

 

Raw materials

 $322,996  $322,996 

Sub-assemblies

  373,886   347,036 

Work in progress

  21,741   21,741 

Finished goods

  22,581   44,069 

Reserve for obsolescence

  (85,575)  (85,575)

Total Inventory

 $655,629  $650,267 
Property, Plant, and Equipment [Table Text Block]
  

April 30,

  

April 30,

 
  

2026

  

2025

 

Equipment

 $469,086  $465,532 

Furniture & fixtures

  102,563   102,563 

Leasehold improvements

  32,812   32,812 

Total

  604,461   600,907 

Less: Accumulated depreciation

  (565,149)  (537,358)

Property and equipment, net

 $39,312  $63,549