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Note 3 – Discontinued Operations – Sale of Consumer Segment (Tables)
 6 Months Ended
Oct. 31, 2023
Discontinued Operations and Disposal Groups [Abstract]  
Disposal Groups, Including Discontinued Operations [Table Text Block]
                     
  

Three months ended

October 31,

 

Six months ended

October 31,

   2023  2022  2023  2022
Revenues  $1,056,932   $782,850   $2,926,151   $2,725,570 
                     
Cost of goods sold   1,154,200    673,046    2,539,316    2,340,259 
                     
Gross Margin   (97,268)   109,804    386,835    385,311 
                     
Operating Expenses                    
Operations   173,825    171,055    383,805    332,838 
Research and development   31,054    87,958    77,303    170,764 
Sales and marketing   287,413    168,013    691,517    363,291 
General and administrative   9,982    104,323    53,588    159,484 
Total operating expenses   502,274    531,349    1,206,213    1,026,377 
Operating loss   (599,542)   (421,545)   (819,378)   (641,066)
                     
Other (income) expense                    
Interest expense   —      —      22,856    —   
Other, net   (31)   (8,050)   (150)   (8,174)
Other (income) expense   (31)   (8,050)   22,706    (8,174)
                     
Net loss from discontinued operations  $(599,511)  $(413,495)  $(842,084)  $(632,892)
[custom:ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresAssetsAndLiabilitiesTextBlock]
   October 31, 2023  April 30, 2023
Current assets          
Cash  $6,310   $86,656 
Accounts receivable, net   44,431    61,107 
Inventory   2,599,022    3,065,954 
Other   1,503,999    2,069,438 
Total current assets   4,153,762    5,283,155 
           
Intangible assets, net   20,000    20,000 
Other   3,853    3,853 
Operating lease right-of-use assets   62,280    84,544 
Total long term assets   86,133    108,397 
           
Current liabilities          
Accounts payable  $64,777   $606,872 
Accrued expenses   96,838    109,480 
Debt obligations - short term   166,026    —   
Customer deposits   43,936    244,688 
Operating lease liabilities   53,060    49,461 
Total current liabilities   424,637    1,010,501 
           
Long term liabilities - Operating lease liabilities   14,356    41,814 
           
Working capital  $3,729,125   $4,272,654