Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net loss	$ (3,542,181)	$ (3,185,251)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	3,617,743	3,509,436
Interest from amortization of debt costs	51,974	18,572
Loss on disposal of property and equipment	9,235	8,951
Stock-based compensation on stock options & RSUs, net	825,250	642,865
Provision for doubtful accounts receivable	7,713	(35,799)
Change in operating lease assets and liabilities	(222,047)	(187,616)
Inventory write-offs to allowance	456,538	157,399
Deferred taxes	545,015	512,000
Changes in operating assets and liabilities:
Trade accounts receivable	(562,651)	1,568,171
Other receivables	137,103	(5,052)
Inventories	1,217,622	167,496
Prepaid expenses and other assets	10,560	137,810
Accounts payable and accrued liabilities	(1,087,746)	1,423,042
Net cash provided by operating activities	1,464,128	4,732,024
Cash flows from investing activities:
Purchase of property and equipment	(1,626,614)	(3,158,784)
Net cash used in investing activities	(1,626,614)	(3,158,784)
Cash flows from financing activities:
Proceeds from exercise of stock options	0	142,692
Proceeds from sale of common stock from Employee Stock Purchase Plan	51,711	29,978
Loan costs	(61,223)	0
Borrowings on loans payable	266,850	275,377
Payments on loans payable	(681,301)	(1,013,014)
Repayment of finance lease obligations	(212,211)	(278,462)
Net cash used in financing activities	(636,174)	(843,429)
Effect of exchange rate on cash and cash equivalents	(468,143)	657,495
Change in cash and cash equivalents	(1,266,803)	1,387,306
Cash and cash equivalents, beginning of period	6,774,694	5,387,388
Cash and cash equivalents, end of period	5,507,891	6,774,694
Supplemental disclosure of cash flow information:
Interest paid in cash	157,407	199,524
Income taxes paid	$ 267,585	$ 1,054,232