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CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)
 6 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Cash Flows from Operating Activities:    
Net Income (Loss) $ (2,280,928) $ (1,223,217)
Adjustments to reconcile net loss to net cash used in by operating activities -    
Depreciation and amortization 97,486 104,261
Stock-based compensation expense 457,570 491,177
Non-cash interest expense 8,918 8,752
Changes in operating assets and liabilities -    
Accounts receivable, net 39,096 395,863
Inventories, net (979,727) (323,770)
Prepaid expenses 24,323 15,560
Accounts payable 1,340,791 (756,522)
Customer advances 245,583 (16,448)
Accrued compensation and other (58,543) (188,480)
Net cash used in operating activities (1,105,431) (1,492,824)
Cash Flows from Investing Activities:    
Purchases of fixed assets (54,170) (152,240)
Additional patent costs (5,915) (18,532)
Net cash used in investing activities (60,085) (170,772)
Cash Flows from Financing Activities:    
Payments of capital lease obligations (22,590) (21,282)
Payments of long-term debt (121,273) (256,630)
Payments of debt issuance costs (15,000) 0
Payments on line of credit (100,000) 0
Gross proceeds from private placements of common stock 1,204,542 0
Gross proceeds from the exercise of stock options 27,000 2,700
Net cash provided by (used in) financing activities 972,679 (275,212)
Net (decrease) increase in cash and cash equivalents (192,837) (1,938,808)
Cash and cash equivalents, beginning of period 405,278 2,925,852
Cash and cash equivalents, end of period $ 212,441 $ 987,044